Patent US3694643A successfully refreshed from Google Patents.
USH21H
Expired / Lapsed
US
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Document handling device
Assignee: Xerox Corp
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Filing: 1984-07-23
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Granted: 1986-02-04
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Expires: 2004-07-23
Abstract
Abstract In a document feeder for a copier with a stationary copying platen, having a document transport tray system movable towards and away from the copying platen for transporting original documents to the platen for copying by movement of the document transport over the platen from a position adjacent the platen, wherein the improvement includes one or more unidirectional document holding wheels engageable and disengageable by the movement of the document transport for holding the original documents against the platen in position for copying, and a document ejecting wiper connected to and movable with the document transport for wiping across the platen to thereby remove documents on the platen and for pushing those removed documents off of only one side of the platen while further documents are being transported onto the platen by the document transport, and while the holding wheels are disengaged, with the movement of the document transport towards the platen, the wiper and document transport being adapted to prevent the wiper from engaging those further documents being transported onto the platen by the document transport.
Inventors
- 👤 Richard A. Schieck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:34
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/60; G03G15/605; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/625; G03B27/6257; G03G2215/00; G03G2215/00172; G03G2215/00177; G03G2215/00181; G03G2215/00185
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
181 words
In a document feeder for a copier with a stationary copying platen having document transport means movable towards and away from the copying platen of the copier for transporting original documents to the platen for copying by movement of said document transport means over the platen from a position adjacent the platen, wherein the improvement comprises: holding means, engageable and disengageable by movement of said document transport means, for holding the original documents against the platen in position for copying, and document ejecting wiping means, connected to and movable with said document transport means, for wiping across the platen to thereby remove documents on the platen and for pushing those removed documents off of only one side of the platen while further documents are being transported onto the platen by said document transport means, and while said holding means is disengaged, with said movement of said document transport means towards the platen, wiping means and said document transport means being adapted to prevent said wiping means from engaging said further documents being transported onto the platen by said document transport means.
Claim 2
Dependent Claim
181 words
In a document feeder for a copier with a stationary copying platen having document transport means movable towards and away from the copying platen of the copier for transporting original documents to the platen for copying by movement of said document transport means over the platen from a position adjacent the platen, wherein the improvement comprises: holding means, engageable and disengageable by movement of said document transport means, for holding the original documents against the platen in position for copying, and document ejecting wiping means, connected to and movable with said document transport means, for wiping across the platen to thereby remove documents on the platen and for pushing those removed documents off of only one side of the platen while further documents are being transported onto the platen by said document transport means, and while said holding means is disengaged, with said movement of said document transport means towards the platen, wiping means and said document transport means being adapted to prevent said wiping means from engaging said further documents being transported onto the platen by said document transport means.
Claim 3
Dependent Claim
120 words
The document feeder of claim 1 wherein said holding means for holding the original documents against the platen for copying comprises a frictional wheel freely rotatable only in the direction of said movement of said document transport means towards the platen and vertically movable and positioned and biased to engage and press downwardly against a document transported thereto by said document transport means, said frictional wheel resisting, by said engagement and by non-rotation, the movement of a document in the direction of movement of said document transport means away from the platen, so as to separate a document from said document transport means during said movement thereof away from the platen, and then to hold that document against the platen.
Claim 4
Dependent Claim
55 words
The document feeder of claim 2 wherein said holding means for holding the original documents against the platen for copying further comprises a flexible lightweight light-reflective backing member extending over a document held against the platen by said frictional wheel and surrounding said frictional wheel and vertically movable therewith for providing a document imaging background.
Claim 5
Dependent Claim
75 words
The document feeder of claim 2 wherein said document transport means includes camming means for engaging and lifting said frictional wheel vertically away from said platen and away from said wiping means to provide said disengaging of said holding means, and for rolling said frictional wheel onto said document transport means so as to freely roll over a document on said document transport means during said movement of said document transport means towards the platen.
Claim 6
Dependent Claim
62 words
The document feeder of claim 2 wherein there are a plurality of independently operable and spaced apart said frictional wheels mounted over the platen for simultaneous registrations of a plurality of documents on the platen and wherein said document transport means is adapted to simultaneously feed a plurality of documents toward the platen for individual engagement and retention by said frictional wheels.
Claim 7
Dependent Claim
75 words
The document feeder of claim 5 wherein said document transport means includes camming means for engaging and lifting said frictional wheel vertically away from said platen and away from said wiping means to provide said disengaging of said holding means, and for rolling said frictional wheel onto said document transport means so as to freely roll over a document on said document transport means during said movement of said document transport means towards the platen.
Claim 8
Dependent Claim
45 words
The document feeder of claim 1 wherein said document transport means comprises a document supporting tray reciprocally movable over but spaced above the platen and adapted to transport documents on top of said supporting tray, and said wiping means is mounted beneath said supporting tray.
Claim 9
Dependent Claim
50 words
The document feeder of claim 1 wherein said wiping means comprises a brush mounted adjacent the side of said document transport means adjacent the platen and extending from said document transport means sufficiently to make a document sweeping engagement with the platen as said transport means moves over the platen.
Claim 10
Dependent Claim
24 words
The document feeder of claim 8 wherein said brush dimensionally extends across the platen transverse the direction of movement of said document transport means.
Claim 11
Dependent Claim
45 words
The document feeder of claim 8 wherein said document transport means comprises a document supporting tray reciprocally movable over but spaced above the platen and adapted to transport documents on top of said supporting tray, and said wiping means is mounted beneath said supporting tray.
Claim 12
Dependent Claim
190 words
The document feeder of claim 10 wherein said holding means for holding the original documents against the platen for copying comprises a frictional wheel freely rotatable only in the direction of said movement of said document transport means towards the platen and vertically movable and positioned and biased to engage and press downwardly against a document transported thereto by said document transport means, said frictional wheel resisting, by said engagement and by non-rotation, the movement of a document in the direction of movement of said document transport means away from the platen, so as to separate a document from said document transport means during said movement thereof away from the platen, and then to hold that document against the platen, and wherein said document transport means includes camming means for engaging and lifting said frictional wheel vertically away from said platen and away from said wiping means to provide said disengaging of said holding means, and for rolling said frictional wheel onto said document transport means so as to freely roll over a document on said document transport means during said movement of said document transport means towards the platen.
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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) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |