US4079876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer forms feeder
Assignee: Xerox Corp
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Filing: 1977-03-30
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Granted: 1978-03-21
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Expires: 1997-03-30
Abstract
Abstract A document feeder capable of handling continuous length document materials such as computer fanfold, the feeder having spaced belts with angled projections thereon adapted to engage perforations in the document material to cause the document material to ride up on the projections during a feed cycle to lift the document material from the copy platen of the machine and prevent scrubbing of the document thereon.
Inventors
- 👤 Michael A. Malachowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:43
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/625; G03B27/6264; B; B65; B65H; B65H20/00; B65H20/20; B65H2701/00; B65H2701/10; B65H2701/11; B65H2701/112; B65H2701/1123; B65H2701/11231
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
A document handling apparatus for moving edge perforated document material across the exposure platen of a reproduction machine comprising: a pair of movable feed belts disposed adjacent opposite sides of the exposure platen, said belts having a plurality of angled projections thereon formed of a low friction material for mating engagement with the perforations in perforated document material, movement of said belts causing the document material to slide up said angled projections on said belts to lift the material from the exposure platen; and biasing means adapted for cooperation with said feed belts to force the document material into contact with the exposure platen when said feed belts are stopped to enable exposure of the document material.
Claim 2
Dependent Claim
117 words
A document handling apparatus for moving edge perforated document material across the exposure platen of a reproduction machine comprising: a pair of movable feed belts disposed adjacent opposite sides of the exposure platen, said belts having a plurality of angled projections thereon formed of a low friction material for mating engagement with the perforations in perforated document material, movement of said belts causing the document material to slide up said angled projections on said belts to lift the material from the exposure platen; and biasing means adapted for cooperation with said feed belts to force the document material into contact with the exposure platen when said feed belts are stopped to enable exposure of the document material.
Claim 3
Dependent Claim
35 words
A document handling apparatus according to claim 1 wherein said biasing means comprises springs mounted on said belts between said projections to force the document material against the exposure platen when said belts are stopped.
Claim 4
Dependent Claim
70 words
A document handling apparatus according to claim 1 further including a pair of belt pulleys adapted for rotatably supporting each feed belt, the pair of pulleys supporting one of said belts being restrained against axial movement, the other pair of pulleys being biased in a axial direction away from the axially restrained pulleys to maintain the perforated document material retained on the projections of said belts in a taut condition.
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) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |