US4073585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet removing device for use in electrophotographic copying machine
Assignee: Xerox Ltd
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Filing: 1976-07-27
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Granted: 1978-02-14
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Expires: 1996-07-27
Abstract
Abstract A sheet removing device for use in an electrophotographic copying machine which removes unstripped sheets from the photosensitive body by providing feed rollers which rotate in reverse upon a stripping failure to pull the sheet off the photosensitive body by acting on the trailing edge portion of the sheet.
Inventors
- 👤 Tatsuo Kobayashi
- 👤 Akira Miyazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:01
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6532; B; B65; B65H; B65H29/00; B65H29/54; B65H29/56; Y; Y10; Y10S; Y10S271/00; Y10S271/90; Y10S271/902
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
In an electrophotographic copying machine wherein a developed latent image is produced on a photosensitive body and transferred to a copy sheet which is thereafter stripped from the photosensitive body for further processing, a sheet removing device comprising: a reversible feed roll pair adapted to feed sheets to the photosensitive body for transferring a developed latent image thereto; detector means for detecting a failure in stripping a sheet off the photosensitive body, and control means actuated by said detector means to reverse said feed roll pair to pull the mis-stripped sheet backward off the photosensitive body.
Claim 2
Dependent Claim
96 words
In an electrophotographic copying machine wherein a developed latent image is produced on a photosensitive body and transferred to a copy sheet which is thereafter stripped from the photosensitive body for further processing, a sheet removing device comprising: a reversible feed roll pair adapted to feed sheets to the photosensitive body for transferring a developed latent image thereto; detector means for detecting a failure in stripping a sheet off the photosensitive body, and control means actuated by said detector means to reverse said feed roll pair to pull the mis-stripped sheet backward off the photosensitive body.
Claim 3
Dependent Claim
94 words
A sheet removing device according to claim 1 wherein said detector means comprises, a follower located adjacent the photosensitive body downstream from the normal stripping point, said follower being adapted for contact by the lead edge of a mis-stripped sheet; said control means including a switch having a switch lever associated therewith, said follower being mounted on said lever, contact of said follower by a mis-stripped sheet causing said switch lever to move to a position whereat said switch energizes said feed rollers in reverse to pull the mis-stripped sheet off the photosensitive body.
Claim 4
Dependent Claim
101 words
A sheet removing device according to claim 2 further including sheet guide means moveable between a first and a second position said guide means being located adjacent said feed roll pair to guide sheets into said roll pair when said rolls are operated in a forward direction and said guide means is in said first position, said control means being adapted to move said guide means to said second position when said roll pair is operated in reverse to deflect the mis-stripped sheet; and, a sheet tray adjacent said guide means to receive mis-stripped sheets deflected thereto by said guide means.
References Cited (Backward Citations)
US3521060A
Cited
US3840224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |