US4638989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device to prevent transport of poorly aligned copy paper
Assignee: Sharp Corp
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Filing: 1985-08-30
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Granted: 1987-01-27
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Expires: 2005-08-30
Abstract
Abstract Disclosed herein is a useful device for preventing incorrect transport of copy papers including a paper-detect member which is located in the copy-paper transport path activated by copy paper and a control member, located in advance of the copy-paper transport path and of the paper detect member, which is activated by copy papers to control the pivot motion of paper-detect member.
Inventors
- 👤 Yoji Senoo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:03
CPC Classifications
B; B65; B65H; B65H7/00; B65H7/02; G; G03; G03G; G03G15/00; G03G15/65; G03G15/6555; G03G15/6558; G03G15/6561; G03G15/6564; G03G15/6567; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00379; G03G2215/00392; G03G2215/00405; G03G2215/00535; G03G2215/00556; G03G2215/00561; G03G2215/00611; G03G2215/00628
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
214 words
A device for ensuring correct transport of sheet material along a sheet material path comprising: guide plate means, provided adjacent said sheet material transport path, for supporting said sheet material during transport, said guide plate means having an elongated reference edge parallel to said transport path and along one edge thereof, said elongated reference edge guiding an edge of said sheet material therealong during correct transport; inlet feed means for feeding said sheet material to said transport path adjacent said guide plate means; a plurality of actuator arms positioned transverse to said transport path, said actuator arms, when in a material restricting position inhibiting movement of said sheet material along said paper path, said actuator arms being collectively movable from said transport path in response to the pressure of said sheet material contacting at least a majority of said actuator arms and therefore being aligned with respect to said transport path; and stopper means, positioned along said transport path upstream from said actuator arms and adjacent said elongated reference edge, for determining the presence of said sheet material adjacent said elongated reference edge, said stopper means inhibiting the movement of said actuator arms from said material restricting position until the presence of said sheet material is detected, thereby enabling movement of said actuator arms.
Claim 2
Independent Claim
214 words
A device for ensuring correct transport of sheet material along a sheet material path comprising: guide plate means, provided adjacent said sheet material transport path, for supporting said sheet material during transport, said guide plate means having an elongated reference edge parallel to said transport path and along one edge thereof, said elongated reference edge guiding an edge of said sheet material therealong during correct transport; inlet feed means for feeding said sheet material to said transport path adjacent said guide plate means; a plurality of actuator arms positioned transverse to said transport path, said actuator arms, when in a material restricting position inhibiting movement of said sheet material along said paper path, said actuator arms being collectively movable from said transport path in response to the pressure of said sheet material contacting at least a majority of said actuator arms and therefore being aligned with respect to said transport path; and stopper means, positioned along said transport path upstream from said actuator arms and adjacent said elongated reference edge, for determining the presence of said sheet material adjacent said elongated reference edge, said stopper means inhibiting the movement of said actuator arms from said material restricting position until the presence of said sheet material is detected, thereby enabling movement of said actuator arms.
Claim 3
Dependent Claim
39 words
A device according to claim 1, wherein said plurality of actuator arms restrain said sheet material due to a lack of frictional force necessary to rotate said actuator arms until said sheet material squarely abuts all of said arms.
Claim 4
Dependent Claim
20 words
A device according to claim 1, wherein said device is included within an electrophotographic copying machine having a photographic drum.
Claim 5
Dependent Claim
22 words
A device according to claim 3, wherein movement of said plurality of actuator arms initiates a copying operation in said copying machine.
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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) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |