US3655282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed photoelectrostatic copying machine
Assignee: AB Dick Co
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Filing: 1969-12-31
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Granted: 1972-04-11
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Expires: 1989-12-31
Abstract
Abstract A high speed copying machine includes, in combination, a xenon light source for illuminating an original document and providing, via an optical assembly, a light image of the original to an exposure station for imaging copy material as it is transported through the exposure station; a high speed magnetic brush developer for applying toner particles to the imaged copy material at a high rate, and a fusing assembly for fixing the toner particles applied to the copy material thereto by the application of pressure only. Independent transport arrangements are provided to move the copy material through the various copy processing stations of the machine. One of the transport arrangements includes endless belt members each having a piled surface of a non-conductive material to prevent the dissipation of the charge applied to the copy material as the latter is carried by the belt members.
Inventors
- 👤 Charies L Turner
- 👤 Arthur S Zerfahs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:13
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
325 words
A high speed, electrostatic copying apparatus for making copies of an original on sensitized copy material; comprising, in combination: means for receiving an original to be copied including an illuminating means for illuminating said original, having a xenon light source, wherein said original is maintained in a stationary, readily accessible position during the copying process; a copy material supply station for maintaining a roll of copy material, a copy material path along which said copy material passes from said roll; a charging station located along said copy material path, downstream of said supply station including charging means for applying an electrostatic charge to said copy material, a cutter station located along said copy material path, interposed between said supply station and said charging station, including cutter means for severing predetermined lengths of copy material from said roll; a copy material exposure station located along said copy material path downstream of said charging station; optical means for projecting a light image of said original from said original receiving means to said exposure station for imaging said charged copy material, a developing station located along said copy material path downstream of said exposure station, and including a high speed magnetic brush developer for applying electroscopic developing powder to said imaged copy material; a heatless fusing station located downstream of said developing station, comprising pressure means for permanently securing said electroscopic powder to the imaged copy material, copy transport means for transporting said copy material substantially without stopping from said roll at said supply station, sequentially past said aforementioned fusing station; sensing means disposed at said exposure station in the path of the continuously advancing lead edge of said copy material and actuated thereby, means responsive to the actuation of said sensing means for actuating said cutting means to sever a length of copy paper and subsequently flash said xenon source; and control means for operating said charging means, developer and fuser, as described, to process said copy.
Claim 2
Dependent Claim
325 words
A high speed, electrostatic copying apparatus for making copies of an original on sensitized copy material; comprising, in combination: means for receiving an original to be copied including an illuminating means for illuminating said original, having a xenon light source, wherein said original is maintained in a stationary, readily accessible position during the copying process; a copy material supply station for maintaining a roll of copy material, a copy material path along which said copy material passes from said roll; a charging station located along said copy material path, downstream of said supply station including charging means for applying an electrostatic charge to said copy material, a cutter station located along said copy material path, interposed between said supply station and said charging station, including cutter means for severing predetermined lengths of copy material from said roll; a copy material exposure station located along said copy material path downstream of said charging station; optical means for projecting a light image of said original from said original receiving means to said exposure station for imaging said charged copy material, a developing station located along said copy material path downstream of said exposure station, and including a high speed magnetic brush developer for applying electroscopic developing powder to said imaged copy material; a heatless fusing station located downstream of said developing station, comprising pressure means for permanently securing said electroscopic powder to the imaged copy material, copy transport means for transporting said copy material substantially without stopping from said roll at said supply station, sequentially past said aforementioned fusing station; sensing means disposed at said exposure station in the path of the continuously advancing lead edge of said copy material and actuated thereby, means responsive to the actuation of said sensing means for actuating said cutting means to sever a length of copy paper and subsequently flash said xenon source; and control means for operating said charging means, developer and fuser, as described, to process said copy.
Claim 3
Dependent Claim
86 words
A high speed copying apparatus as claimed in claim 1 wherein said copy transport means includes a first transport arrangement for feeding copy material from said roll through said cutting and charging station, toward said exposure station; a second transport arrangement operated independently of said first transport arrangement for transporting said copy material through said exposure station and a third transport arrangEment for feeding copy material through said developing and fusing stations, said third transport means being operated independently of said first and second transport arrangements.
Claim 4
Dependent Claim
97 words
A copying machine as claimed in claim 1 wherein said illuminating means is raised above the upper surface of said copying machine and includes a raised portion having a planar surface receiving a transparent platen and an inclined surface connecting said planar surface and upper surface of said copy machine, and wherein said illuminating means further includes a cover portion movably, pivotally mounted on said raised planar surface and being movable to an open position exposing said raised portion and to a closed position covering said raised portion thereby to prevent light from escaping said illuminating means.
Claim 5
Dependent Claim
50 words
A copying machine as claimed in claim 3 wherein said cover portion includes a hingedly mounted door, said door being movable to open and closed positions while said cover portion remains in a closed position on said planar surface, said door revealing said transparent platen when in said open position.
Claim 6
Dependent Claim
327 words
A high speed copying machine for making copies of an original on copy material, comprising, in combination: an illumination station for receiving an original to be copied including a xenon illumination source for illuminating said original wherein said original is maintained in a stationary, readily accessible position during the copying process; a copy material supply station including a roll of copy material; a copy material path along which said copy material passes from said roll; a charging station located along said copy material path, downstream of said supply station including charging means for applying an electrostatic charge to said copy material; a cutter station located along said copy material path including cutter means for severing predetermined lengths of copy material from said roll; first copy transport means for feeding copy material from said roll past said charging and cutting stations, a copy material exposure station located downstream of said cutting and charging stations, optical means for projecting a light image of said original from said illumination station to said exposure station for imaging charged lengths of copy material severed from said roll; second independent transport means being operated to transport said charged lengths of copy material past said exposure means for imaging as the latter are moved through said station; a developing station downstream of said exposure station along said copy path including developing means for applying toner particles to said imaged length of copy material; a heatless fuser station located downstream of said developing station comprising; pressure fuser assembly for permanently securing said toner particles to the imaged copy material; third transport means for moving said copy material lengths through said developer and fuser stations; and sensing means disposed at said exposure station in the path of the continuously advancing lead edge of said copy material and actuated thereby, means responsive to the actuation of said sensing means for actuating said cutting means to sever a length of copy paper and subsequently flash said xenon source.
Claim 7
Dependent Claim
327 words
A high speed copying machine for making copies of an original on copy material, comprising, in combination: an illumination station for receiving an original to be copied including a xenon illumination source for illuminating said original wherein said original is maintained in a stationary, readily accessible position during the copying process; a copy material supply station including a roll of copy material; a copy material path along which said copy material passes from said roll; a charging station located along said copy material path, downstream of said supply station including charging means for applying an electrostatic charge to said copy material; a cutter station located along said copy material path including cutter means for severing predetermined lengths of copy material from said roll; first copy transport means for feeding copy material from said roll past said charging and cutting stations, a copy material exposure station located downstream of said cutting and charging stations, optical means for projecting a light image of said original from said illumination station to said exposure station for imaging charged lengths of copy material severed from said roll; second independent transport means being operated to transport said charged lengths of copy material past said exposure means for imaging as the latter are moved through said station; a developing station downstream of said exposure station along said copy path including developing means for applying toner particles to said imaged length of copy material; a heatless fuser station located downstream of said developing station comprising; pressure fuser assembly for permanently securing said toner particles to the imaged copy material; third transport means for moving said copy material lengths through said developer and fuser stations; and sensing means disposed at said exposure station in the path of the continuously advancing lead edge of said copy material and actuated thereby, means responsive to the actuation of said sensing means for actuating said cutting means to sever a length of copy paper and subsequently flash said xenon source.
Claim 8
Dependent Claim
56 words
A high speed copying machine as claimed in claim 5 wherein said pressure fuser assembly includes a pair of rollers in pressure, driving engagement with respect to each other, whereby developed copy material lengths are transported between said rollers thereby to fix said toner particles to said material by pressure applied by said roller pair thereto.
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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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |