US4262998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic attachment for use with an optical projecting system
Assignee: Coulter Systems Corp
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Filing: 1978-11-28
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Granted: 1981-04-21
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Expires: 1998-11-28
Abstract
Abstract An electrophotographic attachment for use with an optical projecting system for making a copy of a document on a sheet of carrier material. The attachment includes an electrophotographic belt that is mounted on rollers. The belt is rotated through a charging station, an exposure station, a toning station, an image transfer station and a cleaning station. The toning station includes a toning platen which serves to assist in the application of toner from a supply to the belt. Four embodiments of the toning station are described.
Inventors
- 👤 Manfred R. Kuehnle
- 👤 George J. Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:55
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/101; G03G15/22; G03G15/26; G03G15/263
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
300 words
An attachment for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and said portion including a front or exposure side and a back side; drive means for rotating said web sequentially and successively through a set of stations in a single revolution therethrough for each complete cycle; said set of stations including: a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document thereon; a toning station downstream of said exposure station for toning the latent image as it is moved through said toning station, including a toner supply reservoir, toning platen means including a uniform conductive toning surface spaced closely proximate the path of said electrophotographic portion facing same and defining a toning gap therebetween, said electrophotographic portion being movable therethrough and feed means associated with said reservoir for transporting toner therefrom to said toning gap for application thereof in a smooth and non-turbulent flow to the latent image carried by said electrophotographic portion and at a location closely proximate said first reach as said portion passes through said toning gap; and a transfer station following said toning station including means for transferring the toned image from said electrophotographic portion onto a sheet of carrier material, including means for moving said sheet of carrier material and said front side of said electrophotographic portion into close proximity during said transfer.
Claim 2
Dependent Claim
300 words
An attachment for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and said portion including a front or exposure side and a back side; drive means for rotating said web sequentially and successively through a set of stations in a single revolution therethrough for each complete cycle; said set of stations including: a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document thereon; a toning station downstream of said exposure station for toning the latent image as it is moved through said toning station, including a toner supply reservoir, toning platen means including a uniform conductive toning surface spaced closely proximate the path of said electrophotographic portion facing same and defining a toning gap therebetween, said electrophotographic portion being movable therethrough and feed means associated with said reservoir for transporting toner therefrom to said toning gap for application thereof in a smooth and non-turbulent flow to the latent image carried by said electrophotographic portion and at a location closely proximate said first reach as said portion passes through said toning gap; and a transfer station following said toning station including means for transferring the toned image from said electrophotographic portion onto a sheet of carrier material, including means for moving said sheet of carrier material and said front side of said electrophotographic portion into close proximity during said transfer.
Claim 3
Dependent Claim
35 words
An attachment as claimed in claim 1 wherein said toning station includes: bias means for electrically biasing said electrophotographic portion relative to said toning platen means across said gap to assist in the toning operation.
Claim 4
Dependent Claim
228 words
An attachment for use with an optical projection system for use in making a copy of a document electrophotographically comprising: roller mounted endless web means including at least a portion that is electrophotographic in character, said web and said portion including a front or exposure side and a back side; drive means for rotating said web through a set of stations sequentially and successively in a single revolution therethrough for each charging, exposure, toning and transfer; said set of stations including; a charging station for charging said portion; an exposure station following said charging station for producing a latent image on said electrophotographic portion; a toning station following said exposure station including means for applying a substantially constant amount of toner across the width of only said front side of said imaged electrophotographic portion as it is moved through said toner station to produce a toned image on said electrophotographic portion, said toner applying means including toner feed roll means and further including a toning platen having a uniform surface conforming to the path of the electrophotographic portion and facing said electrophotographic portion; and a transfer station following said toning station including means for transferring said toned image from said electrophotographic portion onto a transfer medium, including means for moving said transfer medium and said front side of said toned electrophotographic portion into close proximity during said transfer.
Claim 5
Dependent Claim
228 words
An attachment for use with an optical projection system for use in making a copy of a document electrophotographically comprising: roller mounted endless web means including at least a portion that is electrophotographic in character, said web and said portion including a front or exposure side and a back side; drive means for rotating said web through a set of stations sequentially and successively in a single revolution therethrough for each charging, exposure, toning and transfer; said set of stations including; a charging station for charging said portion; an exposure station following said charging station for producing a latent image on said electrophotographic portion; a toning station following said exposure station including means for applying a substantially constant amount of toner across the width of only said front side of said imaged electrophotographic portion as it is moved through said toner station to produce a toned image on said electrophotographic portion, said toner applying means including toner feed roll means and further including a toning platen having a uniform surface conforming to the path of the electrophotographic portion and facing said electrophotographic portion; and a transfer station following said toning station including means for transferring said toned image from said electrophotographic portion onto a transfer medium, including means for moving said transfer medium and said front side of said toned electrophotographic portion into close proximity during said transfer.
Claim 6
Dependent Claim
38 words
An attachment as claimed in claim 1 wherein said toner station includes: bias means for electrically biasing said imaged electrophotographic portion relative to said toning platen means across the space between them to assist in the toning operation.
Claim 7
Dependent Claim
99 words
An attachment as claimed in claim 3 wherein said transfer station includes: support means disposed against said back side for supporting and positioning said web as it passes through said transfer station; chute means for feeding carrier material adjacent to but spaced from said web on said front side; and transfer roll means opposite said support roll means being operative by said moving means to press against said carrier material to move it into close proximity with said toned portion for transferring said toned image to said carrier material as it passes through said transfer station between said rolls.
Claim 8
Dependent Claim
37 words
An attachment as claimed in claim 5 wherein said transfer station includes: transfer bias means for electrically biasing said toned portion relative to said carrier material and said transfer roll means to assist in the transfer operation.
Claim 9
Dependent Claim
249 words
An attachment for use with an optical projection system for use in making a copy of a document electrophotographically comprising: roller mounted endless web means including at least a portion that is electrophotographic in character, said web and said portion including a front or exposure side and a back side; drive means for rotating said web through a set of stations sequentially and successively in a single revolution therethrough for each charging, exposure, toning and transfer; said set of stations including; a charging station for charging said portion; an exposure station following said charging station for producing a latent image on said electrophotographic portion; a toning station following said exposure station including means for applying a substantially constant amount of toner across the width of only said front side of said imaged electrophotographic portion as it is moved through said toner station to produce a toned image on said electrophotographic portion, said toner applying means including manifold means having at least a first longitudinal baffle connected to a longitudinal exit for flowing said toner onto said imaged electrophotographic portion, said toning station further including a toning platen having a uniform surface conforming to the path of the electrophotographic portion and facing said electrophotographic portion; and a transfer station following said toning station including means for transferring said toned image from said electrophotographic portion onto a transfer medium, including means for moving said transfer medium and said front side of said toned electrophotographic portion into close proximity during said transfer.
Claim 10
Dependent Claim
249 words
An attachment for use with an optical projection system for use in making a copy of a document electrophotographically comprising: roller mounted endless web means including at least a portion that is electrophotographic in character, said web and said portion including a front or exposure side and a back side; drive means for rotating said web through a set of stations sequentially and successively in a single revolution therethrough for each charging, exposure, toning and transfer; said set of stations including; a charging station for charging said portion; an exposure station following said charging station for producing a latent image on said electrophotographic portion; a toning station following said exposure station including means for applying a substantially constant amount of toner across the width of only said front side of said imaged electrophotographic portion as it is moved through said toner station to produce a toned image on said electrophotographic portion, said toner applying means including manifold means having at least a first longitudinal baffle connected to a longitudinal exit for flowing said toner onto said imaged electrophotographic portion, said toning station further including a toning platen having a uniform surface conforming to the path of the electrophotographic portion and facing said electrophotographic portion; and a transfer station following said toning station including means for transferring said toned image from said electrophotographic portion onto a transfer medium, including means for moving said transfer medium and said front side of said toned electrophotographic portion into close proximity during said transfer.
Claim 11
Dependent Claim
194 words
An attachment for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and electrophotographic portion including a front or exposure side and a back side; drive means for rotating said web sequentially through a set of stations; said set of stations including; a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document; a toning station following said exposure station for toning the latent image as it is moved through said toning station, said toning station including, toning platen means including a smooth substantially planar surface spaced from said front side; and P1 manifold means having at least a first longitudinal baffle connected to a longitudinal exit for flowing said toner onto said electrophotographic portion.
Claim 12
Dependent Claim
194 words
An attachment for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and electrophotographic portion including a front or exposure side and a back side; drive means for rotating said web sequentially through a set of stations; said set of stations including; a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document; a toning station following said exposure station for toning the latent image as it is moved through said toning station, said toning station including, toning platen means including a smooth substantially planar surface spaced from said front side; and P1 manifold means having at least a first longitudinal baffle connected to a longitudinal exit for flowing said toner onto said electrophotographic portion.
Claim 13
Dependent Claim
42 words
An attachment as claimed in claim 8, wherein said smooth toning surface of the toning platen means includes an arcuate shaped portion, said portion having a central slot and defining the toning gap between said toning platen means and said electrophotographic portion.
Claim 14
Dependent Claim
35 words
An attachment as claimed in claim 9 wherein said toning station includes; bias means for electrically biasing said electrophotographic portion relative to said toning platen means across said gap to assist in the toning operation.
Claim 15
Dependent Claim
22 words
An attachement as claimed in claim 9 wherein said toning surface portion of the toning platen means is made of conductive material.
Claim 16
Dependent Claim
276 words
An attachment for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and electrophotographic portion including a front or exposure side and a back side; drive means for rotating said web sequentially through a set of stations; said set of stations including: a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document; a toning station following said exposure station for toning the latent image as it is moved through said toning station, said toning station includes toning platen means including a smooth uniform toning surface spaced from said front side, defining a gap between the platen means and the front side of said electrophotographic film portion, a supply reservoir containing a liquid toner and a rotatably mounted feed roller for applying liquid toner from the reservoir in a smooth and nonturbulent flow to said gap for application therein to said front side of said electrophotographic portion passing therethrough and a transfer station following said toning station including means for transferring the toned image from said electrophotographic portion onto a sheet of carrier material, including means for moving said sheet of carrier material and said front side of said electrophotographic portion into close proximity during said transfer.
Claim 17
Dependent Claim
276 words
An attachment for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and electrophotographic portion including a front or exposure side and a back side; drive means for rotating said web sequentially through a set of stations; said set of stations including: a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document; a toning station following said exposure station for toning the latent image as it is moved through said toning station, said toning station includes toning platen means including a smooth uniform toning surface spaced from said front side, defining a gap between the platen means and the front side of said electrophotographic film portion, a supply reservoir containing a liquid toner and a rotatably mounted feed roller for applying liquid toner from the reservoir in a smooth and nonturbulent flow to said gap for application therein to said front side of said electrophotographic portion passing therethrough and a transfer station following said toning station including means for transferring the toned image from said electrophotographic portion onto a sheet of carrier material, including means for moving said sheet of carrier material and said front side of said electrophotographic portion into close proximity during said transfer.
Claim 18
Dependent Claim
42 words
An attachment as claimed in claim 12 wherein said smooth toning surface of the toning platen means includes an arcuate shaped portion, said portion having a central slot and defining the toning gap between said toning platen means and said electrophotographic portion.
Claim 19
Dependent Claim
241 words
An attachment for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and electrophotographic portion including a front or exposure side and a back side; drive means for rotating said web sequentially through a set of stations; said set of stations including: a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document; a toning station following said exposure station for toning the latent image as it is moved through said toning station, said toning station including a toner reservoir; toning platen means, including a smooth substantially uniform surface spaced from said front side defining a toning gap therebetween and toner feed roll means disposed adjacent to said front side for feeding toner to said gap for application thereof to said front side; and a transfer station following said toning station including means for transferring the toned image from said electrophotographic portion onto a sheet of carrier material and said front side of said electrophotographic portion into close proximity during said transfer.
Claim 20
Dependent Claim
241 words
An attachment for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and electrophotographic portion including a front or exposure side and a back side; drive means for rotating said web sequentially through a set of stations; said set of stations including: a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document; a toning station following said exposure station for toning the latent image as it is moved through said toning station, said toning station including a toner reservoir; toning platen means, including a smooth substantially uniform surface spaced from said front side defining a toning gap therebetween and toner feed roll means disposed adjacent to said front side for feeding toner to said gap for application thereof to said front side; and a transfer station following said toning station including means for transferring the toned image from said electrophotographic portion onto a sheet of carrier material and said front side of said electrophotographic portion into close proximity during said transfer.
Claim 21
Dependent Claim
37 words
An attachment as claimed in claim 14 wherein said toner station includes: bias means for electrically biasing said electrophotographic portion relative to said toning platen means across the space between them to assist in the toning operation.
Claim 22
Dependent Claim
267 words
An attachment for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and electrophotographic portion including a front or exposure side and a back side; drive means for rotating said web sequentially through a set of stations; said set of stations including: a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document; a toning station following said exposure station for toning the latent image as it is moved through said toning station, said toning station including a container, a quantity of liquid toner in said container, means associated with the container, including a conductive member arranged defining a toning gap between said conductive member and the front side of the electrophotographic portion and feed roller means for transporting liquid toner from said container to the toning gap for application thereof to the latent image carried by the electrophotographic portion; and a transfer station following said toning station including means for transferring the toned image from said electrophotographic portion onto a sheet of carrier material, including means for moving said sheet of carrier material and said front side of said electrophotographic portion into close proximity during said transfer.
Claim 23
Dependent Claim
267 words
An attachment for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and electrophotographic portion including a front or exposure side and a back side; drive means for rotating said web sequentially through a set of stations; said set of stations including: a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document; a toning station following said exposure station for toning the latent image as it is moved through said toning station, said toning station including a container, a quantity of liquid toner in said container, means associated with the container, including a conductive member arranged defining a toning gap between said conductive member and the front side of the electrophotographic portion and feed roller means for transporting liquid toner from said container to the toning gap for application thereof to the latent image carried by the electrophotographic portion; and a transfer station following said toning station including means for transferring the toned image from said electrophotographic portion onto a sheet of carrier material, including means for moving said sheet of carrier material and said front side of said electrophotographic portion into close proximity during said transfer.
Claim 24
Dependent Claim
24 words
The attachment according to claim 16 and wherein the feed roller is mechanically coupled to the roller arranged to support and rotate the web.
Claim 25
Dependent Claim
224 words
An attachment for an optical projecting system for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and electrophotographic portion including a front or exposure side and a back side; drive means for rotating said web sequentially through a set of stations; said set of stations including: a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document; a toning station following said exposure station for toning the latent image as it moved through said toning station, said toning station including toning platen means including a smooth arcuate surface disposed proximate a roller for supporting the web, and a transfer station following said toning station including means for transferring the toned image from said electrophotographic portion onto a sheet of carrier material, including means for moving said sheet of carrier material and said front side of said electrophotographic portion into close proximity during said transfer.
Claim 26
Dependent Claim
224 words
An attachment for an optical projecting system for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and electrophotographic portion including a front or exposure side and a back side; drive means for rotating said web sequentially through a set of stations; said set of stations including: a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document; a toning station following said exposure station for toning the latent image as it moved through said toning station, said toning station including toning platen means including a smooth arcuate surface disposed proximate a roller for supporting the web, and a transfer station following said toning station including means for transferring the toned image from said electrophotographic portion onto a sheet of carrier material, including means for moving said sheet of carrier material and said front side of said electrophotographic portion into close proximity during said transfer.
Claim 27
Dependent Claim
296 words
An attachment for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and electrophotographic portion including a front or exposure side and a back side; drive means for rotating said web sequentially through a set of stations; said set of stations including: a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document; a toning station following said exposure station for toning the latent image as it is moved through said toning station; and a transfer station following said toning station including means for transferring the toned image from said electrophotographic portion onto a sheet of carrier material, including means for moving said sheet of carrier material and said front side of said electrophotographic portion into close proximity during said transfer and said transfer station including: support roll means disposed against said back side for supporting and positioning said web and electrophotographic portion as it passes through said transfer station; chute means for feeding said carrier material adjacent to but spaced from said web on said front side; and transfer roll means opposite said support roll means being operative by said moving means to press against said carrier material to move it into close proximity with said electrophotographic portion for transferring an image to said carrier material as it passes through said transfer station between said rolls.
Claim 28
Dependent Claim
296 words
An attachment for an optical projecting system for use in making a copy of a document on a sheet of carrier material comprising: rotatable endless web means mounted on rollers and having a first planar reach and including at least a portion which is electrophotographic in character, said web and electrophotographic portion including a front or exposure side and a back side; drive means for rotating said web sequentially through a set of stations; said set of stations including: a charging station located adjacent said front side including corona means for charging said electrophotographic portion while it is in said charging station; an exposure station following said charging for exposing said electrophotographic portion when said electrophotographic portion is at the first planar reach and forming thereby a latent image of the document; a toning station following said exposure station for toning the latent image as it is moved through said toning station; and a transfer station following said toning station including means for transferring the toned image from said electrophotographic portion onto a sheet of carrier material, including means for moving said sheet of carrier material and said front side of said electrophotographic portion into close proximity during said transfer and said transfer station including: support roll means disposed against said back side for supporting and positioning said web and electrophotographic portion as it passes through said transfer station; chute means for feeding said carrier material adjacent to but spaced from said web on said front side; and transfer roll means opposite said support roll means being operative by said moving means to press against said carrier material to move it into close proximity with said electrophotographic portion for transferring an image to said carrier material as it passes through said transfer station between said rolls.
Claim 29
Dependent Claim
37 words
A mechanism as claimed in claim 19 wherein said transfer station includes: transfer bias means for electrically biasing said electrophotographic portion relative to said carrier material and said transfer roll means to assist in the transfer operation.
Claim 30
Dependent Claim
242 words
An attachment for use with an optical projection system for use in making a copy of a document electrophotographically comprising: roller mounted endless web means including at least a portion that is electrophotographic in character, said web and said portion including a front or exposure side and a back side; drive means rotating said web through a set of stations sequentially and successively in a single revolution therethrough for each charging, exposure, toning and transfer; said set of stations including; a charging station for charging said portion; an exposure station following said charging station for producing a latent image on said electrophotographic portion; a toning station following said exposure station including toning platen means having a uniform surface conforming to the path of the electrophotographic portion therepast and facing said electrophotographic portion uniformly spaced therefrom to define a toning gap across the width of only said front side of said imaged electrophotographic portion as it is moved through said toner station, a source of liquid toner, feed roller means associated with said source for applying a substantially constant amount of liquid toner from said source to said gap to produce a toned image on said electrophotographic portion; and a transfer station following said toning station including means for transferring said toned image from said electrophotographic portion onto a transfer medium, including means for moving said transfer medium and said front side of said toned electrophotographic portion into close proximity during said transfer.
Claim 31
Dependent Claim
242 words
An attachment for use with an optical projection system for use in making a copy of a document electrophotographically comprising: roller mounted endless web means including at least a portion that is electrophotographic in character, said web and said portion including a front or exposure side and a back side; drive means rotating said web through a set of stations sequentially and successively in a single revolution therethrough for each charging, exposure, toning and transfer; said set of stations including; a charging station for charging said portion; an exposure station following said charging station for producing a latent image on said electrophotographic portion; a toning station following said exposure station including toning platen means having a uniform surface conforming to the path of the electrophotographic portion therepast and facing said electrophotographic portion uniformly spaced therefrom to define a toning gap across the width of only said front side of said imaged electrophotographic portion as it is moved through said toner station, a source of liquid toner, feed roller means associated with said source for applying a substantially constant amount of liquid toner from said source to said gap to produce a toned image on said electrophotographic portion; and a transfer station following said toning station including means for transferring said toned image from said electrophotographic portion onto a transfer medium, including means for moving said transfer medium and said front side of said toned electrophotographic portion into close proximity during said transfer.
Claim 32
Dependent Claim
39 words
An attachment as claimed in claim 21 wherein said toning station includes: a supply of liquid toner and toning means for applying said toner in a smooth and nonturbulent flow to said front side of said imaged electrophotographic portion.
Claim 33
Dependent Claim
36 words
An attachment as claimed in claim 21 wherein said toner applying means includes manifold means having at least a first longitudinal baffle connected to a longitudinal exit for flowing said toner onto said imaged electrophotographic portion.
Claim 34
Independent Claim
195 words
A method for reproducing an image onto a sheet of carrier material electrophotographically using an endless web mounted on rollers and having an electrophotographic portion, the web defining first and second generally parallel reaches including; charging said electrophotographic portion when it enters the first planar reach; locating and stopping said electrophotographic portion along the first planar reach of the web when said portion is fully disposed therein; exposing the electrophotographic portion to a light image when the web is stopped within the planar reach; forming a smooth generally uniform toning gap between a source of liquid toner and the web by spacing a smooth toning surface parallel and closely proximate to the web, applying to said gap liquid toner so that a substantially constant amount of liquid toner is applied across the width of only the bottom side of said electrophotographic portion in a smooth and nonturbulent flow to said portion as the web leaves the first reach; and transferring an image from said electrophotographic portion to a sheet of carrier material in a transfer station, said endless belt being moved successively one revolution for completion of the cycle of charging, exposure, toning and transfer.
Claim 35
Independent Claim
195 words
A method for reproducing an image onto a sheet of carrier material electrophotographically using an endless web mounted on rollers and having an electrophotographic portion, the web defining first and second generally parallel reaches including; charging said electrophotographic portion when it enters the first planar reach; locating and stopping said electrophotographic portion along the first planar reach of the web when said portion is fully disposed therein; exposing the electrophotographic portion to a light image when the web is stopped within the planar reach; forming a smooth generally uniform toning gap between a source of liquid toner and the web by spacing a smooth toning surface parallel and closely proximate to the web, applying to said gap liquid toner so that a substantially constant amount of liquid toner is applied across the width of only the bottom side of said electrophotographic portion in a smooth and nonturbulent flow to said portion as the web leaves the first reach; and transferring an image from said electrophotographic portion to a sheet of carrier material in a transfer station, said endless belt being moved successively one revolution for completion of the cycle of charging, exposure, toning and transfer.
Claim 36
Dependent Claim
21 words
A method as claimed in claim 24 wherein said toning includes: electrically biasing said toning surface relative to said electrophotographic portion.
Claim 37
Independent Claim
132 words
A method for reproducing an image onto a sheet of carrier material electrophotographically using an endless web mounted on rollers and having an electrophotographic portion including: charging said electrophotographic portion; locating and stopping said electrophotographic portion along a planar reach of the web; exposing the electrophotographic portion to a light image at the planar reach; forming a smooth uniform toning gap from said portion of the web as it passes through said toning station, and by placing a smooth toning surface parallel to and spaced closely from said reach portion, applying a substantially constant amount of liquid toner across the width of only the bottom side of said electrophotographic portion in the toning gap; and transferring an image from said electrophotographic portion to a sheet of carrier material in a transfer station.
Claim 38
Independent Claim
132 words
A method for reproducing an image onto a sheet of carrier material electrophotographically using an endless web mounted on rollers and having an electrophotographic portion including: charging said electrophotographic portion; locating and stopping said electrophotographic portion along a planar reach of the web; exposing the electrophotographic portion to a light image at the planar reach; forming a smooth uniform toning gap from said portion of the web as it passes through said toning station, and by placing a smooth toning surface parallel to and spaced closely from said reach portion, applying a substantially constant amount of liquid toner across the width of only the bottom side of said electrophotographic portion in the toning gap; and transferring an image from said electrophotographic portion to a sheet of carrier material in a transfer station.
Claim 39
Dependent Claim
35 words
A method as claimed in claim 26 wherein the smooth toning surface includes an arcuate portion and said toner is applied by rolling said toner into close proximity with said electrophotographic portion within the gap.
Claim 40
Dependent Claim
21 words
A method as claimed in claim 26 wherein said toning includes: electrically biasing said toning surface relative to said reach portion.
Claim 41
Dependent Claim
17 words
The method as claimed in claim 26 in which said toning gap is formed of arcuate configuration.
Claim 42
Dependent Claim
24 words
The method as claimed in claim 26 in which said reach portion at said gap is planar and parallel to the said toning surface.
Claim 43
Independent Claim
161 words
A method for reproducing an image onto a sheet of carrier material electrophotographically using an endless web mounted on rollers and having an electrophotographic portion including: charging said electrophotographic portion; locating and stopping said electrophotographic portion along a planar reach of the web; exposing the electrophotographic portion to a light image at the planar reach; p1 forming a smooth uniform toning gap from said portion of the web as it passes through said toning station by placing a smooth conductive toning surface parallel to and spaced closely from said portion of the web; applying a substantially constant amount of liquid toner across the width of only the bottom side of said electrophotographic portion in a toning station; feeding said carrier material close to but spaced from said web; moving said sheet of carrier material into close proximity with said electrophotographic portion as it passes through a transfer station; and transferring an image from said electrophotographic portion to said carrier material thereat.
Claim 44
Independent Claim
161 words
A method for reproducing an image onto a sheet of carrier material electrophotographically using an endless web mounted on rollers and having an electrophotographic portion including: charging said electrophotographic portion; locating and stopping said electrophotographic portion along a planar reach of the web; exposing the electrophotographic portion to a light image at the planar reach; p1 forming a smooth uniform toning gap from said portion of the web as it passes through said toning station by placing a smooth conductive toning surface parallel to and spaced closely from said portion of the web; applying a substantially constant amount of liquid toner across the width of only the bottom side of said electrophotographic portion in a toning station; feeding said carrier material close to but spaced from said web; moving said sheet of carrier material into close proximity with said electrophotographic portion as it passes through a transfer station; and transferring an image from said electrophotographic portion to said carrier material thereat.
Claim 45
Dependent Claim
21 words
A method as claimed in claim 31 wherein said transferring includes: electrically biasing said carrier material relative to said electrophotographic portion.
Claim 46
Independent Claim
167 words
A method for reproducing an image onto a sheet of carrier material electrophotographically using an endless web mounted on rollers and having an electrophotographic portion including: charging said electrophotographic portion; locating and stopping said electrophotographic portion along a planar reach of the web; exposing the electrophotographic portion to a light image at the planar reach; forming a uniform toning gap by forming a smooth arcuate portion from a portion of the web as it passes through said toning station adjacent the planar reach and placing a smooth toning surface of conforming configuration parallel to and closely uniformly spaced from said arcuate portion and of conforming configuration thereto and feeding said web to said toning gap directly, applying a substantially constant amount of liquid toner to the toning gap and across the width of only the bottom side of said electrophotographic portion as said portion passes through said toning gap and transferring an image from said electrophotographic portion to a sheet of carrier material in a transfer station.
Claim 47
Independent Claim
167 words
A method for reproducing an image onto a sheet of carrier material electrophotographically using an endless web mounted on rollers and having an electrophotographic portion including: charging said electrophotographic portion; locating and stopping said electrophotographic portion along a planar reach of the web; exposing the electrophotographic portion to a light image at the planar reach; forming a uniform toning gap by forming a smooth arcuate portion from a portion of the web as it passes through said toning station adjacent the planar reach and placing a smooth toning surface of conforming configuration parallel to and closely uniformly spaced from said arcuate portion and of conforming configuration thereto and feeding said web to said toning gap directly, applying a substantially constant amount of liquid toner to the toning gap and across the width of only the bottom side of said electrophotographic portion as said portion passes through said toning gap and transferring an image from said electrophotographic portion to a sheet of carrier material in a transfer station.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |