Patent US3834808A successfully refreshed from Google Patents.
US3834808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic photographic copying machine
Assignee: Canon Inc
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Filing: 1973-07-23
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Granted: 1974-09-10
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Expires: 1993-07-23
Abstract
Abstract In an electrostatic photocopying machine, a drum having an axially extending notched portion, and a photosensitive sheet attached to the drum by a clamping device disposed in the notched portion of the drum. The clamping device includes an elastic member for resiliently holding the photosensitive sheet on the drum.
Inventors
- 👤 I Takahashi
- 👤 M Fujii
- 👤 S Sugiura
- 👤 K Kawakubo
- 👤 M Ariga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:18
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1803; G03G15/00; G03G15/04; G03G15/06; G03G15/08; G03G15/0822; G03G15/0865; G03G15/0867; G03G15/0868; G03G15/22; G03G15/28; G03G15/30; G03G15/60; G03G15/605; G03G15/65; G03G15/6532; G03G15/75; G03G15/751; G03G21/1604; G03G21/1623; G03G2215/00; G03G2215/06; G03G2215/066; G03G2215/0663; G03G2215/0673; G03G2215/0678; G03G2215/0685; G03G2221/00; G03G2221/16; G03G2221/163; G03G2221/1651; G03G2221/1654; G03G2221/1657; G03G2221/1672; G03G2221/1675; G03G2221/1678; G03G2221/1687
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
In an electrophotographic copying machine, an improved photosensitive member comprising a cylindrical drum having a portion of its surface cut away to provide an axially extending notched portion in the surface of the drum, clamping means provided in said notched portion, and a photosensitive sheet, wherein said clamping means includes first holding means for holding one end of said photosensitive sheet, and second holding means having an elastic member connected between said drum and the other end of said photosensitive sheet for resiliently holding said sheet on said drum.
Claim 2
Dependent Claim
89 words
In an electrophotographic copying machine, an improved photosensitive member comprising a cylindrical drum having a portion of its surface cut away to provide an axially extending notched portion in the surface of the drum, clamping means provided in said notched portion, and a photosensitive sheet, wherein said clamping means includes first holding means for holding one end of said photosensitive sheet, and second holding means having an elastic member connected between said drum and the other end of said photosensitive sheet for resiliently holding said sheet on said drum.
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |