Patent US5713060A successfully refreshed from Google Patents.
US5713060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image forming apparatus capable of discharging remaining sheets
Assignee: Canon Inc
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Filing: 1996-06-28
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Granted: 1998-01-27
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Expires: 2016-06-28
Abstract
Abstract An image forming apparatus includes an image forming unit for forming an image on a sheet, a first conveying unit for conveying a sheet along a first conveying path toward the image forming unit, a second conveying unit for conveying a sheet along a second conveying path toward the image forming unit, a first detection unit for detecting the sheet remaining in the first conveying path, a second detection unit for detecting the sheet remaining in the second conveying path, and a control unit for discharging the sheets in the first and second conveying paths from the image forming apparatus by simultaneously driving the first and second conveying units whether or not the sheets in the first and second conveying paths are conveyed superposed in the image forming unit, in accordance with the detection of the remaining sheets by the first and second detection units, before the image forming unit starts image formation.
Inventors
- 👤 Kaoru Sato
- 👤 Tatsuto Tachibana
- 👤 Masayoshi Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:41
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/70; G03G2215/00; G03G2215/00362; G03G2215/00535; G03G2215/00548; G03G2215/00552; G03G2215/00556; G03G2215/00586
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
147 words
An image forming apparatus comprising: image forming means for forming an image on a sheet; first conveying means for conveying a sheet along a first conveying path toward said image forming means; second conveying means for conveying a sheet along a second conveying path toward said image forming means; first detection means for detecting a sheet remaining in the first conveying path; second detection means for detecting a sheet remaining in the second conveying path; and control means for discharging the sheets in the first and second conveying paths from said image forming apparatus by simultaneously driving said first and second conveying means whether or not the sheets in the first and second conveying paths are conveyed superposed in said image forming means, in accordance with the detection of the remaining sheets by said first and second detection means, before said image forming means starts image formation.
Claim 2
Dependent Claim
147 words
An image forming apparatus comprising: image forming means for forming an image on a sheet; first conveying means for conveying a sheet along a first conveying path toward said image forming means; second conveying means for conveying a sheet along a second conveying path toward said image forming means; first detection means for detecting a sheet remaining in the first conveying path; second detection means for detecting a sheet remaining in the second conveying path; and control means for discharging the sheets in the first and second conveying paths from said image forming apparatus by simultaneously driving said first and second conveying means whether or not the sheets in the first and second conveying paths are conveyed superposed in said image forming means, in accordance with the detection of the remaining sheets by said first and second detection means, before said image forming means starts image formation.
Claim 3
Dependent Claim
28 words
An image forming apparatus according to claim 1, wherein said first conveying means conveys a sheet passing through said image forming means again to said image forming means.
Claim 4
Dependent Claim
21 words
An image forming apparatus according to claim 1, wherein said second conveying means conveys a sheet from a sheet accommodating unit.
Claim 5
Dependent Claim
26 words
An image forming apparatus according to claim 1, wherein said control means discharges the remaining sheets when electric power is supplied to said image forming apparatus.
Claim 6
Dependent Claim
28 words
An image forming apparatus according to claim 1, wherein said control means discharges the remaining sheets after jam release processing in said image forming apparatus by an operator.
Claim 7
Dependent Claim
30 words
An image forming apparatus according to claim 1, wherein said control means prevents discharge of the remaining sheets when said first and second detection means do not detect remaining sheets.
Claim 8
Dependent Claim
107 words
An image forming apparatus comprising: image forming means for forming an image on a sheet; first conveying means for conveying a sheet along a first conveying path toward said image forming means; second conveying means for conveying a sheet along a second conveying path toward said image forming means; and control means for discharging the sheets remaining in the first and second conveying paths from said image forming apparatus by simultaneously driving said first and second conveying means whether or not the sheets remaining in the first and second conveying paths are conveyed superposed in said image forming means, before said image forming means starts image formation.
Claim 9
Dependent Claim
107 words
An image forming apparatus comprising: image forming means for forming an image on a sheet; first conveying means for conveying a sheet along a first conveying path toward said image forming means; second conveying means for conveying a sheet along a second conveying path toward said image forming means; and control means for discharging the sheets remaining in the first and second conveying paths from said image forming apparatus by simultaneously driving said first and second conveying means whether or not the sheets remaining in the first and second conveying paths are conveyed superposed in said image forming means, before said image forming means starts image formation.
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) | 2001-01-26 | 2001-07-28 | 2002-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-01-26 | 2005-07-28 | 2006-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-01-26 | 2009-07-28 | 2010-01-27 | $7700.00 | Window Closed / Lapsed |