US4494858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Geometric design reproducing apparatus
Assignee: Xerox Corp
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Filing: 1983-04-28
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Granted: 1985-01-22
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Expires: 2003-04-28
Abstract
Abstract Electrostatographic reproducing apparatus comprising a movable imaging surface, transport means to transport the imaging surface along a path past the series of operational processing stations wherein a toner image and copy substrate contact station is provided, and wherein the distance along the imaging surface path from the image forming station where the lead edge of an image is formed on the imaging surface to the initial line of contact of the imaging surface with the copy substrate is equal to the distance along the copy substrate path from the copy sheet entrance to the initial line of contact of the lead edge of the copy substrate with lead edge of the image on the imaging surface. The apparatus further includes means at the beginning of each imaging cycle to simultaneously actuate the movable imaging surface with a copy substrate transport whereby the lead edge of the formed image on the imaging surface and the lead edge of the copy substrate simultaneously arrive at the initial line of contact.
Inventors
- 👤 Charles A. Gage
- 👤 Timothy T. Blair
- 👤 Thomas W. Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:46
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/28; G03G15/283
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
209 words
Electrostatographic reproducing apparatus comprising a movable imaging surface, means to transport said imaging surface along a path past a series of operational processing stations including at least an image forming station and a developed toner image and copy substrate contact station, said apparatus also including a copy substrate entrance to the apparatus, a copy substrate path to guide said copy substrate from said entrance to said copy substrate contact station, means to transport said copy substrate along said copy substrate path, the distance along the imaging surface path from said image forming station where the lead edge of an image is formed on the imaging surface to the initial line of contact of the imaging surface with the copy substrate being equal to the distance along said copy substrate path from the copy sheet entrance to the initial line of contact of the lead edge of the copy substrate with the lead edge of the image on the imagining surface, and means at the beginning of each image cycle to simultaneously actuate said movable imaging surface and said copy substrate transport whereby the lead edge of the formed image on the imaging surface and the lead edge of the copy substrate simultaneously arrive at the initial line of contact.
Claim 2
Dependent Claim
209 words
Electrostatographic reproducing apparatus comprising a movable imaging surface, means to transport said imaging surface along a path past a series of operational processing stations including at least an image forming station and a developed toner image and copy substrate contact station, said apparatus also including a copy substrate entrance to the apparatus, a copy substrate path to guide said copy substrate from said entrance to said copy substrate contact station, means to transport said copy substrate along said copy substrate path, the distance along the imaging surface path from said image forming station where the lead edge of an image is formed on the imaging surface to the initial line of contact of the imaging surface with the copy substrate being equal to the distance along said copy substrate path from the copy sheet entrance to the initial line of contact of the lead edge of the copy substrate with the lead edge of the image on the imagining surface, and means at the beginning of each image cycle to simultaneously actuate said movable imaging surface and said copy substrate transport whereby the lead edge of the formed image on the imaging surface and the lead edge of the copy substrate simultaneously arrive at the initial line of contact.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1, further including means to transfer said toner image from said imaging surface to said copy substrate while they are in contact.
Claim 4
Dependent Claim
18 words
The apparatus of claim 1, wherein said imaging surface comprises a photoconductive insulating layer on a conductive substrate.
Claim 5
Dependent Claim
42 words
The apparatus of claim 3, wherein said image forming station comprises in sequence a charging station to uniformly charge said photoconductive insulating layer and an exposure station to expose said photoconductive insulating layer to a light and shadow pattern to be reproduced.
Claim 6
Dependent Claim
19 words
The apparatus of claim 1, wherein said imaging surface comprises an insulating layer which is charged in image configuration.
Claim 7
Dependent Claim
96 words
The apparatus of claim 1, wherein said imaging surface is a reusable, flexible web having an insulating surface supported between a web supply roll and a web take up roll, one end of said web being fastened to said web supply roll, the other end of said web being fastened to said web take up roll, said web supply roll and said web take up roll being spaced apart and wherein said image forming station and said developed toner image and copy substrate contact station are positioned between said supply roll and said take up roll.
Claim 8
Dependent Claim
67 words
The apparatus of claim 4, further including a document viewing platen at the exposure station across which a document may be fed to expose said photoconductive insulating layer to the light and shadow pattern of said document, and means to feed the document across said platen such that the lead edge of the document is exposed to and forms the lead edge of the photoconductive insulating layer.
Claim 9
Dependent Claim
69 words
The apparatus of claim 6, further including copy substrate feed means to feed said copy substrate from said copy substrate entrance to said developed toner image and copy substrate contact station in wrapped around contact with said web take up roll to the contact station so that the leading edge of said copy substrate is in registration with the leading edge of the developed image on said imaging surface.
Claim 10
Dependent Claim
25 words
The apparatus of claim 8, wherein the circumference of said web take up roll is at least equal to the length of said copy substrate.
Claim 11
Dependent Claim
40 words
The apparatus of claim 9, wherein said copy substrate is maintained in contact with the take up roll while being wrapped around said take up roll by a plurality of idler rolls in driving engagement with the take up roll.
Claim 12
Dependent Claim
33 words
The apparatus of claim 10, wherein said copy substrate is wrapped around said take up roll at the same speed and in contact with the toner bearing side of said imaging surface web.
Claim 13
Dependent Claim
20 words
The apparatus of claim 11, including means to transfer said toner image from said imaging surface to said copy substrate.
References Cited (Backward Citations)
US3521950A
Cited
US3591276A
Cited
US3867026A
Cited
US3843251A
Cited
US4014605A
Cited
US4068937A
Cited
US4268157A
Cited
US4087169A
Cited
US4179211A
Cited
US4257700A
Cited
US4327991A
Cited
US4316666A
Cited
US4289395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |