US3840222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Document feeder for electrostatic copier
Assignee: AB Dick Co
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Filing: 1973-04-09
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Granted: 1974-10-08
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Expires: 1993-04-09
Abstract
Abstract A copy machine including means for transporting an original to an exposure location, means for directing an image of the content of the original to a copying location and means for transporting individual copy sheets to the copying location. Switch means are provided for detecting the leading and trailing edges of the original and copy sheets with the sequence of operations being controlled by the condition of these switch means whereby maximum efficiency from the standpoint of feeding of originals and copy sheets can be accomplished. Engagement of switches with leading edges of the originals and copy sheets cooperates with a ''''ready'''' position provided for the originals whereby the copy sheets and originals can be moved in synchronism through the respective exposure and copying locations. The mechanisms are arranged so that both originals and copy sheets are obtained in page number sequence after completion of a continuous multiple copy operation whereby restacking of originals or copy sheets to conform to the initial stack of originals is not required. The withdrawal means for moving the originals from the exposure location are designed to achieve the proper restacking.
Inventors
- 👤 W Fowlie
- 👤 M Yoon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:00
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/28; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/625; G03B27/6264
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
360 words
In a copy machine including means for supporting a stack of originals in page number sequence, means for transporting the originals, one at a time, to an exposure location, and means for withdrawing the copy sheet from said exposure location, the improvement wherein said means for transporting the original to the exposure location include sheet separating and feeding means offset laterally to one side of the exposure location, said sheet separating and feeding means operating to automatically move the originals, one at a time, to the exposure location, said means for withdrawing the original being offset laterally to the other side of the exposure location, and said withdrawing means comprising first drive means assisting in moving the originals through the exposure location, and second drive means operating at a higher peripheral speed for engaging the originals after passage from said first drive means, said first and second drive means being spaced so that the originals are simultaneously engaged by both, and wherein the second drive means slip relative to the originals until release of the originals by the first drive means, said second drive means being designed to develop momentum in said originals and having means to project the originals upwardly and then back in a direction toward said sheet separating and feeding means, an inclined receiving tray for said originals located above said exposure location with the lower end of said tray being positioned adjacent to and below the outlet of said second drive means, and with the upper end of said tray being positioned remote from and above the outlet of said second drive means, whereby said originals are in a substantially horizontal position in the plane of said exposure location and whereby the originals must, therefore, be projected vertically and then back into an inclined plane above said tray for movement into said tray, said withdrawing means thereby operating to move said originals upwardly and back for deposit of the originals in the receiving tray in the same sequence as said originals were fed and with the content of each original facing in the same direction relative to other originals as in the original stack of originals.
Claim 2
Dependent Claim
360 words
In a copy machine including means for supporting a stack of originals in page number sequence, means for transporting the originals, one at a time, to an exposure location, and means for withdrawing the copy sheet from said exposure location, the improvement wherein said means for transporting the original to the exposure location include sheet separating and feeding means offset laterally to one side of the exposure location, said sheet separating and feeding means operating to automatically move the originals, one at a time, to the exposure location, said means for withdrawing the original being offset laterally to the other side of the exposure location, and said withdrawing means comprising first drive means assisting in moving the originals through the exposure location, and second drive means operating at a higher peripheral speed for engaging the originals after passage from said first drive means, said first and second drive means being spaced so that the originals are simultaneously engaged by both, and wherein the second drive means slip relative to the originals until release of the originals by the first drive means, said second drive means being designed to develop momentum in said originals and having means to project the originals upwardly and then back in a direction toward said sheet separating and feeding means, an inclined receiving tray for said originals located above said exposure location with the lower end of said tray being positioned adjacent to and below the outlet of said second drive means, and with the upper end of said tray being positioned remote from and above the outlet of said second drive means, whereby said originals are in a substantially horizontal position in the plane of said exposure location and whereby the originals must, therefore, be projected vertically and then back into an inclined plane above said tray for movement into said tray, said withdrawing means thereby operating to move said originals upwardly and back for deposit of the originals in the receiving tray in the same sequence as said originals were fed and with the content of each original facing in the same direction relative to other originals as in the original stack of originals.
Claim 3
Dependent Claim
58 words
A construction in accordance with claim 1 wherein said tray rests on support means whereby the tray can be lifted for access to the exposure location, said transporting means and withdrawing means being mounted independently of said tray whereby the tray can be lifted from said support means without disturbing the operation of said transporting and withdrawing means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |