US4984019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode wire cleaning
Assignee: Xerox Corp
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Filing: 1990-02-26
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Granted: 1991-01-08
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Expires: 2010-02-26
Abstract
Abstract An apparatus in which an contaminants are removed from an electrode positioned between a donor roller and a photoconductive surface. A magnetic roller is adapted to transport developer material to the donor roller. The electrode is vibrated to remove contaminants therefrom.
Inventors
- 👤 Jeffrey J. Folkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:06
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0806; G03G15/0813; G03G15/0803; G03G2215/00; G03G2215/06; G03G2215/0602; G03G2215/0604; G03G2215/0614; G03G2215/0619; G03G2215/0634; G03G2215/0636; G03G2215/0643
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
62 words
An apparatus for removing contaminants from an electrode member positioned in a space between a surface adapted to have a latent image recorded thereon and a donor member, including: means for vibrating said electrode member to remove contaminants therefrom; and means for advancing developer material to said donor member, said advancing means being inoperative in response to said vibrating means being energized.
Claim 2
Independent Claim
62 words
An apparatus for removing contaminants from an electrode member positioned in a space between a surface adapted to have a latent image recorded thereon and a donor member, including: means for vibrating said electrode member to remove contaminants therefrom; and means for advancing developer material to said donor member, said advancing means being inoperative in response to said vibrating means being energized.
Claim 3
Independent Claim
73 words
An apparatus for removing contaminants from an electrode member positioned in a space between a surface adapted to have a latent image recorded thereon and a donor member, including: means for vibrating said electrode member to remove contaminants therefrom, said vibrating means includes means for electrically biasing said electrode member; and means for advancing developer material to said donor member, said advancing means being inoperative in response to said vibrating means being energized.
Claim 4
Independent Claim
73 words
An apparatus for removing contaminants from an electrode member positioned in a space between a surface adapted to have a latent image recorded thereon and a donor member, including: means for vibrating said electrode member to remove contaminants therefrom, said vibrating means includes means for electrically biasing said electrode member; and means for advancing developer material to said donor member, said advancing means being inoperative in response to said vibrating means being energized.
Claim 5
Dependent Claim
20 words
An apparatus according to claim 2, wherein said electrical biasing means applies an AC electrical bias to said electrode member.
Claim 6
Dependent Claim
32 words
An apparatus according to claim 3, wherein said electrical biasing means applies an AC electrical bias to said electrode member having a frequency ranging from about 1 HZ to about 100 HZ.
Claim 7
Dependent Claim
27 words
An apparatus according to claim 4, wherein said electrical biasing means applies an AC electrical bias to said electrode member having a frequency of about 10 HZ.
Claim 8
Dependent Claim
47 words
An apparatus according to claim 3, wherein said electrical biasing means applies an AC electrical bias to said electrode member having a frequency between 3,000 HZ and 10,000 HZ and modulating this frequency on and off at a frequency selected from between 1 HZ and 100 HZ.
Claim 9
Dependent Claim
22 words
An apparatus according to claim 3, wherein the developer material being transported by said advancing means to said donor member is magnetic.
Claim 10
Dependent Claim
55 words
An apparatus according to claim 7, wherein said advancing means includes: a non-magnetic tubular member mounted rotatably so as to advance developer material from the chamber of said housing to said donor member; and an elongated magnetic member disposed interiorly of said tubular member for attracting developer material to the surface of said tubular member.
Claim 11
Dependent Claim
13 words
An apparatus according to claim 8, wherein the donor member includes a roll.
Claim 12
Dependent Claim
17 words
An apparatus according to claim 9, wherein the electrode member includes a plurality of small diameter wires.
Claim 13
Dependent Claim
120 words
An electrophotographic printing machine of the type in which an electrostatic latent image recorded on a photoconductive member is developed to form a visible image thereof, wherein the improvement includes: a housing defining a chamber storing a supply of developer material comprising at least carrier and toner; a donor member spaced from the photoconductive member and being adapted to transport toner to a region opposed from the photoconductive member; an electrode member positioned in a space between the photoconductive member and said donor member; means for vibrating said electrode member to remove contaminants therefrom; and a transport member, located in the chamber of said housing, adapted to advance developer material from the chamber of said housing to said donor member.
Claim 14
Dependent Claim
120 words
An electrophotographic printing machine of the type in which an electrostatic latent image recorded on a photoconductive member is developed to form a visible image thereof, wherein the improvement includes: a housing defining a chamber storing a supply of developer material comprising at least carrier and toner; a donor member spaced from the photoconductive member and being adapted to transport toner to a region opposed from the photoconductive member; an electrode member positioned in a space between the photoconductive member and said donor member; means for vibrating said electrode member to remove contaminants therefrom; and a transport member, located in the chamber of said housing, adapted to advance developer material from the chamber of said housing to said donor member.
Claim 15
Dependent Claim
138 words
An electrophotographic printing machine of the type in which an electrostatic latent image recorded on a photoconductive member is developed to form a visible image thereof, wherein the improvement includes: a housing defining a chamber storing a supply of developer material comprising at least carrier and toner; a donor member spaced from the photoconductive member and being adapted to transport toner to a region opposed from the photoconductive member; an electrode member positioned in the space between the photoconductive member and said donor member; means for vibrating said electrode member to remove contaminants therefrom said vibrating means is inoperative in response to said transport member advancing developer material to said donor member; and a transport member, located in the chamber of said housing, adapted to advance developer material from the chamber of said housing to said donor member.
Claim 16
Dependent Claim
138 words
An electrophotographic printing machine of the type in which an electrostatic latent image recorded on a photoconductive member is developed to form a visible image thereof, wherein the improvement includes: a housing defining a chamber storing a supply of developer material comprising at least carrier and toner; a donor member spaced from the photoconductive member and being adapted to transport toner to a region opposed from the photoconductive member; an electrode member positioned in the space between the photoconductive member and said donor member; means for vibrating said electrode member to remove contaminants therefrom said vibrating means is inoperative in response to said transport member advancing developer material to said donor member; and a transport member, located in the chamber of said housing, adapted to advance developer material from the chamber of said housing to said donor member.
Claim 17
Dependent Claim
19 words
A printing machine according to claim 12, wherein said vibrating means includes means for electrically biasing said electrode member.
Claim 18
Dependent Claim
21 words
A printing machine according to claim 13, wherein said electrical biasing means applies an AC electrical bias to said electrode member.
Claim 19
Dependent Claim
33 words
A printing machine according to claim 14, wherein said electrical biasing means applies an AC electrical bias to said electrode member having a frequency ranging from about 1 HZ to about 100 HZ.
Claim 20
Dependent Claim
28 words
A printing machine according to claim 15, wherein said electrical biasing means applies an AC electrical bias to said electrode member having a frequency of about 10 HZ.
Claim 21
Dependent Claim
50 words
A printing machine according to claim 13, wherein said electrical biasing means applies an AC electrical bias to said electrode member having a frequency selected from between 3,000 HZ to 10,000 HZ and modulating this frequency on and off at a frequency selected from between 1 HZ to 100 HZ.
Claim 22
Dependent Claim
23 words
A printing machine according to claim 13, wherein the developer material being transported by said advancing means to said donor member is magnetic.
Claim 23
Dependent Claim
56 words
A printing machine according to claim 18, wherein said advancing means includes: a non-magnetic tubular member mounted rotatably so as to advance developer material from the chamber of said housing to said donor member; and an elongated magnetic member disposed interiorly of said tubular member for attracting developer material to the surface of said tubular member.
Claim 24
Dependent Claim
14 words
A printing machine according to claim 19, wherein said donor member includes a roll.
Claim 25
Dependent Claim
18 words
A printing machine according to claim 20, wherein said electrode member includes a plurality of small diameter wires.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-07 | 1994-07-09 | 1995-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-07 | 1998-07-09 | 1999-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-07 | 2002-07-09 | 2003-01-08 | $7700.00 | Window Closed / Lapsed |