US4549805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic apparatus
Assignee: Toshiba Corp
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Filing: 1983-08-22
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Granted: 1985-10-29
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Expires: 2003-08-22
Abstract
Abstract An electrophotographic apparatus is disclosed, which has a transfer unit for transferring a toner image formed on a photoconductive drum onto a paper sheet and a manual paper feeding section for manually feeding the paper sheet to the transfer unit. A manually fed paper detector is provided in the proximity of the outlet of the manual paper feeding section. If the manually fed paper detector does not detect any paper continuously for a predetermined period of time from the start of a copying operation, this event is judged to be due to a paper feeding error, whereupon the copying operation is interrupted while the electrophotographic apparatus is restored to a stand-by state.
Inventors
- 👤 Akiro Iimori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:37
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6502; G03G15/6514; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00379; G03G2215/00392; G03G2215/00535; G03G2215/00548; G03G2215/00603; G03G2215/00611; G03G2215/00628; G03G2215/00717; G03G2215/00721
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
180 words
An electrophotographic apparatus comprising: a photoconductive member; means for charging said photoconductive member; means for exposing said photoconductive member to form a latent image of a document pattern on said photoconductive member; means for developing said latent image on said photoconductive member into a visual image; means for transferring said visible image onto a paper sheet; manual paper feeding means for manually feeding a paper sheet to said transferring means; manually-fed paper detecting means for detecting the paper sheet fed from said manual paper feeding means; and control means for making a copying operation start in response to the operation of said manually-fed paper detecting means and for confirming the operation of said manually-fed paper detecting means after a predetermined period of time from the start of the copying operation, said control means including means for continuing the copying operation in response to the confirmation of the operation of said manually-fed paper detecting means and for restoring the copy operation to a standby state in response to the absence of confirmation of the operation of said manually-fed paper detecting means.
Claim 2
Dependent Claim
180 words
An electrophotographic apparatus comprising: a photoconductive member; means for charging said photoconductive member; means for exposing said photoconductive member to form a latent image of a document pattern on said photoconductive member; means for developing said latent image on said photoconductive member into a visual image; means for transferring said visible image onto a paper sheet; manual paper feeding means for manually feeding a paper sheet to said transferring means; manually-fed paper detecting means for detecting the paper sheet fed from said manual paper feeding means; and control means for making a copying operation start in response to the operation of said manually-fed paper detecting means and for confirming the operation of said manually-fed paper detecting means after a predetermined period of time from the start of the copying operation, said control means including means for continuing the copying operation in response to the confirmation of the operation of said manually-fed paper detecting means and for restoring the copy operation to a standby state in response to the absence of confirmation of the operation of said manually-fed paper detecting means.
Claim 3
Dependent Claim
24 words
The electrophotographic apparatus according to claim 1, wherein said manually fed paper detecting means comprises switch means operated by a manually fed paper sheet.
Claim 4
Dependent Claim
66 words
The electrophotographic apparatus according to claim 1, which further comprises aligning means disposed on a paper path from said manual paper feeding means to said transferring means and after said manually fed paper detecting means in the direction of progress of paper, a paper sheet fed from said manual paper feeding means being aligned by said paper aligning means before being fed to said transfer means.
Claim 5
Dependent Claim
18 words
The electrophotographic apparatus according to claim 3, wherein said paper aligning means includes a pair of aligning rollers.
Claim 6
Dependent Claim
44 words
The electrophotographic apparatus according to claim 3, wherein said paper aligning means is stopped to be ready to accept a manually fed paper sheet when the trailing edge of the preceding manually fed paper sheet is detected by said manually fed paper detecting means.
Claim 7
Dependent Claim
30 words
The electrophotographic apparatus according to claim 1, which further comprises automatic paper feeding means disposed on the side of the apparatus on which said manual paper feeding means is disposed.
Claim 8
Dependent Claim
49 words
The electrophotographic apparatus according to claim 1, further comprising aligning roller means for aligning a paper wherein said control means confirms the operation of said manually-fed paper detecting means for a period of time until the start of the aligning roller means after the start of the copying operation.
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) | 1988-10-28 | 1989-04-29 | 1989-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-28 | 1993-04-29 | 1993-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-28 | 1997-04-29 | 1997-10-29 | $7700.00 | Window Closed / Lapsed |