US4496238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image recording apparatus
Assignee: Canon Inc
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Filing: 1983-04-07
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Granted: 1985-01-29
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Expires: 2003-04-07
Abstract
Abstract This specification discloses an image recording apparatus provided with a developing sleeve for guiding and supplying charged toner to cause the charged toner to adhere to an electrostatic latent image on the surface of a photosensitive medium, and means for detecting the feed of multiple transfer sheets, wherein the developing sleeve is provided so as to enable the change over to a potential for releasing the supply of the toner to the photosensitive medium by the adherence of the toner thereto and the change-over is effected in response to the detecting operation of the multi-copy feed detecting means.
Inventors
- 👤 Masaharu Tsukada
- 👤 Junichi Kimizuka
- 👤 Haruo Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:09
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/065
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
80 words
An image recording apparatus having: a developer carrying member for guiding and supplying developer to a latent image on the surface of an image bearing member to cause the developer to adhere to said latent image; means for supplying a bias voltage to said developer carrying member; means for detecting the feed of multiple transfer mediums; and means for varying the bias voltage to said developer carrying member in response to the detecting operation of said multi-copy feed detecting means.
Claim 2
Dependent Claim
80 words
An image recording apparatus having: a developer carrying member for guiding and supplying developer to a latent image on the surface of an image bearing member to cause the developer to adhere to said latent image; means for supplying a bias voltage to said developer carrying member; means for detecting the feed of multiple transfer mediums; and means for varying the bias voltage to said developer carrying member in response to the detecting operation of said multi-copy feed detecting means.
Claim 3
Dependent Claim
36 words
An image recording apparatus according to claim 1, wherein formation of the latent image on the surface of said image bearing member is inhibited in response to the detecting operation of said multi-copy feed detecting means.
References Cited (Backward Citations)
US4239372A
Cited
US4239374A
Cited
US4314755A
Cited
US4332877A
Cited
JPS55121453A
Cited
US4395112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |