US4167323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reproduction apparatus for producing simplex or duplex copies
Assignee: Eastman Kodak Co
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Filing: 1977-10-03
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Granted: 1979-09-11
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Expires: 1997-10-03
Abstract
Abstract Reproduction apparatus for producing simplex or duplex copies. A plurality of individual reusable photoconductive members are provided in a supply and are sequentially transported around a path back to the supply. Positioned along the path are charge, expose, development, transfer and cleaning stations. In the simplex mode, first toner images are sequentially formed on photoconductive members transported around the path and sequentially transferred at the transfer station to first sides of copy sheets brought into transferable relationship with the photoconductive members. In the duplex mode, first and second toner images are formed on first and second photoconductive members respectively transported around the path and the toner images are transferred at the transfer station to opposite sides of a copy sheet brought into transferable relationship with the first and second photoconductive members. In either mode, the copy sheets and photoconductive members are separated, the toner image(s) fixed to the copy sheet and the photoconductive members returned to the supply for reuse.
Inventors
- 👤 Charles T. Hage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:08
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/23; G03G15/231; G03G15/238; G03G2215/00; G03G2215/00953; G03G2215/00962; G03G2215/00966
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
98 words
A method for producing duplex copies comprising: supplying a plurality of individual reusable photoconductive members at a supply location; sequentially transporting at least first and second photoconductive members from said supply location along a path back to said supply location; forming first and second transferable toner images on said first and second members respectively as they are transported along said path; and transferring said first and second toner images from said first and second photoconductive members to the opposite sides respectively of a copy sheet brought into image transferable relationship with said members along an image transfer portion
Claim 2
Independent Claim
98 words
A method for producing duplex copies comprising: supplying a plurality of individual reusable photoconductive members at a supply location; sequentially transporting at least first and second photoconductive members from said supply location along a path back to said supply location; forming first and second transferable toner images on said first and second members respectively as they are transported along said path; and transferring said first and second toner images from said first and second photoconductive members to the opposite sides respectively of a copy sheet brought into image transferable relationship with said members along an image transfer portion
Claim 3
Dependent Claim
17 words
The method of claim 1 including fixing said first and second toner images to said copy sheet.
Claim 4
Dependent Claim
49 words
The method of claim 1 wherein forming of said toner images includes charging said photoconductive members with a uniform charge, exposing said uniformly charged photoconductive members radiation images to form electrostatic to be reproduced and developing the latent images with toner to form toner images on said photoconductive members.
Claim 5
Dependent Claim
112 words
Apparatus for producing duplex copies comprising: supply means for supplying a plurality of reusable photoconductive members; transport means for sequentially transporting at least first and second photoconductive members seriatim from said supply means along an image reproduction path back to said supply means; imaging forming means for forming first and second toner images on said first and second respective photoconductive members as they are transported along said image reproduction path; and image transfer means for transferring said first and second toner images from said first and second photoconductive members to opposite sides of copy sheet brought into image transferable relationship with said photoconductive members along an image transfer portion of said path.
Claim 6
Dependent Claim
112 words
Apparatus for producing duplex copies comprising: supply means for supplying a plurality of reusable photoconductive members; transport means for sequentially transporting at least first and second photoconductive members seriatim from said supply means along an image reproduction path back to said supply means; imaging forming means for forming first and second toner images on said first and second respective photoconductive members as they are transported along said image reproduction path; and image transfer means for transferring said first and second toner images from said first and second photoconductive members to opposite sides of copy sheet brought into image transferable relationship with said photoconductive members along an image transfer portion of said path.
Claim 7
Dependent Claim
77 words
The apparatus of claim 4 wherein said image forming means includes charge means for charging said photoconductive members with a uniform charge, exposure means for exposing said uniformly charged photoconductive members to a radiation image to form first and second electrostatic latent images thereon representative of originals to be reproduced and development means for developing the latent images with toner particles to form first and second transferable toner images respectively on said first and second photoconductive members.
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) | 1982-09-10 | 1983-03-12 | 1983-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-10 | 1987-03-12 | 1987-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-10 | 1991-03-12 | 1991-09-11 | $7700.00 | Window Closed / Lapsed |