Patent US3806239A successfully refreshed from Google Patents.
US3806239A
Expired / Lapsed
US
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Original transport device
Assignee: Canon Inc
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Filing: 1972-07-18
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Granted: 1974-04-23
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Expires: 1992-07-18
Abstract
Abstract An original transport device for use with an electrophotographic copying apparatus or the like comprises a first drive transmission means for operating a sheet original transport unit removably mounted to the copying machine adjacent to the slit portion thereof, and a second drive transmission means for moving an original carriage. The first and second drive transmission means are driven from a drive source in the copying apparatus. The sheet original transport unit, when mounted, is actuated by receiving the drive from the first drive transmission means. The original carriage is movable by the second drive transmission means when the sheet original transport unit is removed from the copying apparatus.
Inventors
- 👤 S Inoue
- 👤 T Sato
- 👤 K Umezawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:26
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/6221; G03B27/6235; G03G; G03G15/00; G03G15/22; G03G15/28; G03G15/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
154 words
An original transport device for a photocopying apparatus having a slit-exposure device, comprising a sheet original transport unit removably mounted in opposed relation to said slit-exposure device, a first drive transmission means for operating said sheet original transport unit and being provided adjacent to said slit-exposure device for advancing a sheet original through a predetermined plane for slit-exposure, wherein said first transmisSion means is disposed in a coplanar relationship with said predetermined plane, a thick original carriage having a support surface for a thick original, a second drive transmission means for moving said original carriage so that said support surface moves through said predetermined plane, and a drive source for driving said first and second drive transmission means, wherein said sheet original transport unit, when mounted, is actuated by said first drive transmission means, and said original carriage is movable by said second drive transmission means upon removal of said sheet original transport unit.
Claim 2
Dependent Claim
154 words
An original transport device for a photocopying apparatus having a slit-exposure device, comprising a sheet original transport unit removably mounted in opposed relation to said slit-exposure device, a first drive transmission means for operating said sheet original transport unit and being provided adjacent to said slit-exposure device for advancing a sheet original through a predetermined plane for slit-exposure, wherein said first transmisSion means is disposed in a coplanar relationship with said predetermined plane, a thick original carriage having a support surface for a thick original, a second drive transmission means for moving said original carriage so that said support surface moves through said predetermined plane, and a drive source for driving said first and second drive transmission means, wherein said sheet original transport unit, when mounted, is actuated by said first drive transmission means, and said original carriage is movable by said second drive transmission means upon removal of said sheet original transport unit.
Claim 3
Dependent Claim
21 words
An original transport device according to claim 1, wherein said drive source normally drives said first and second drive transmission means.
Claim 4
Dependent Claim
31 words
An original transport device according to claim 1, wherein said sheet original transport unit has a transparent original guide plate disposed in said predetermined plane with said original carriage support surface.
Claim 5
Dependent Claim
120 words
An original transport device according to claim 1, wherein said sheet original transport unit has a transparent original guide plate and a pair of sheet original transport rolls having drive surfaces disposed in coplanar relationship with an upper surface of said guide plate and in said predetermined plane, said original carriage has a transparent original supporting plate defining said support surface, and said second drive transmission means has an original carriage transport roll engageable with said transparent original supporting plate to transport said original carriage, the support surface of said original carriage transport roll being lower than the surface of contact between said sheet original transport rolls by an amount corresponding to the thickness of said transparent original supporting plate.
Claim 6
Dependent Claim
50 words
An original transport device according to claim 1, further comprising first rail means mounted on said apparatus for preventing oblique movement of said original carriage, and second rail means for supporting reciprocal movement of said original carriage, wherein said original carriage has rollers driven to rotate on said rail means.
Claim 7
Dependent Claim
46 words
An original transport device according to claim 5, wherein said first rail means comprises a convex rail, said second rail means comprises a planar rail, and one of said driven rollers has a groove formed therein for engagement with the convex portion of said convex rail.
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) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |