US4843437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copying machine
Assignee: Minolta Co Ltd
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Filing: 1988-05-11
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Granted: 1989-06-27
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Expires: 2008-05-11
Abstract
Abstract The disclosure relates to a copying machine in which a document is continuously transported to obtain a copy image with an exposure device fixed. The machine comprises a first unit for forming an image of a document on copy paper, a second unit provided so as to be capable of opening and closing relative to the first unit and including document transport rollers and a motor for driving said rollers and a sensor for detecting abnormal operation of the motor. When the second unit is detected to be opened, the detecting operation of the sensor is inhibited.
Inventors
- 👤 Hiroaki Hamano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:02
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/60; G03G2215/00; G03G2215/00172; G03G2215/00177; G03G2215/00181; G03G2215/00189; G03G2215/00206; G03G2215/0021; G03G2215/00324; G03G2215/00329
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
A copying machine comprising: a first unit comprising a platen and image forming means for forming on copy paper an image of a document on said platen; a second unit provided so as to be capable of opening and closing relative to said first unit; said second unit comprising transporting means for transporting the document to said platen and drive means for driving said transporting means; first detecting means for detecting abnormal operation of said driving means; second detecting means for detecting that the second unit is opened; and inhibiting means for inhibiting the operation of said first decting means in response to said second detecting means.
Claim 2
Dependent Claim
107 words
A copying machine comprising: a first unit comprising a platen and image forming means for forming on copy paper an image of a document on said platen; a second unit provided so as to be capable of opening and closing relative to said first unit; said second unit comprising transporting means for transporting the document to said platen and drive means for driving said transporting means; first detecting means for detecting abnormal operation of said driving means; second detecting means for detecting that the second unit is opened; and inhibiting means for inhibiting the operation of said first decting means in response to said second detecting means.
Claim 3
Dependent Claim
37 words
A copying machine as claimed in claim 1 wherein said first detecting means detects the abnormal operation in the case where said driving means is operated at the time when said driving means should not be operated.
Claim 4
Dependent Claim
74 words
A copying machine which comprises a driving source and document transport means provided so as to be capable of opening and closing relative to the machine main body, said machine comprising: means for detecting abnormal operation of said drive source; means for detecting the opening of said document transport means; and means for inhibiting the operation of said means for detecting abnormal operation of said drive source when the document transport means is opened.
Claim 5
Dependent Claim
74 words
A copying machine which comprises a driving source and document transport means provided so as to be capable of opening and closing relative to the machine main body, said machine comprising: means for detecting abnormal operation of said drive source; means for detecting the opening of said document transport means; and means for inhibiting the operation of said means for detecting abnormal operation of said drive source when the document transport means is opened.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |