US4372673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image forming apparatus
Assignee: Canon Inc
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Filing: 1981-03-12
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Granted: 1983-02-08
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Expires: 2001-03-12
Abstract
Abstract A copy machine has an original feeder for feeding an original document to a predetermined position, image forming apparatus including an original scanning unit, for forming an image of a positioned original onto a copy sheet, a copy feeder for feeding a copy sheet after the start of the feed of the original but before scanning is begun, a jam detector for detecting jamming of a fed original document, and control circuitry for controlling the image forming apparatus in accordance with the output of the jam detector.
Inventors
- 👤 Masahiro Tomosada
- 👤 Yoshimasa Kimura
- 👤 Hisashi Sakamaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:35
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/70; G03G15/04; G03G15/041; G03G15/22; G03G15/28; G03G15/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
108 words
An image forming apparatus, comprising: means for forming a copy image of an original document on a copy material, said means including movable means for scanning the original document; means for feeding the original document to a predetermined position for copying; means for starting said scanning means; means for feeding the copy material for copying, wherein said copy material feeding means starts its operation after the start of said original document feeding means, but before operation of said starting means; means for detecting jamming of the original document; and means for controlling said means for forming a copy image in response to an output from said detecting means.
Claim 2
Dependent Claim
108 words
An image forming apparatus, comprising: means for forming a copy image of an original document on a copy material, said means including movable means for scanning the original document; means for feeding the original document to a predetermined position for copying; means for starting said scanning means; means for feeding the copy material for copying, wherein said copy material feeding means starts its operation after the start of said original document feeding means, but before operation of said starting means; means for detecting jamming of the original document; and means for controlling said means for forming a copy image in response to an output from said detecting means.
Claim 3
Dependent Claim
24 words
An apparatus according to claim 1, wherein said control means is effective to prevent said scanning means from starting in response to said output.
Claim 4
Dependent Claim
24 words
An apparatus according to claim 1, wherein said detecting means is associated with the timing of the operation of said original document feeding means.
Claim 5
Dependent Claim
26 words
An apparatus according to claim 1, wherein said detecting means detects jamming after operation of said material feeding means but before operation of said scanning means.
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) | 1986-02-07 | 1986-08-09 | 1987-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-07 | 1990-08-09 | 1991-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-07 | 1994-08-09 | 1995-02-08 | $7700.00 | Window Closed / Lapsed |