US4443101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording paper separation failure release for copying machine
Assignee: Konica Minolta Inc
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Filing: 1981-10-23
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Granted: 1984-04-17
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Expires: 2001-10-23
Abstract
Abstract A copying machine in which a toner image is transferred from an image retaining member to a recording paper and, after the transfer of said toner image, said recording paper is separated from said image retaining member and ejected to the outside of said machine. When said recording paper is attached to said image retaining member due to a separation failure, a detector of the separation failure produces a detection signal for displacing a recording paper conveying device to open the passage of said recording paper and to separate said recording paper onto said conveying device. Said detector comprises a light-emitting element and a light-receiving element and is disposed in the vicinity of a passage provided specifically for the forcibly separated recording paper, so as to detect only said forcibly separated recording paper.
Inventors
- 👤 Isao Sakurai
- 👤 Teruo Minejima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:10
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6532; B; B65; B65H; B65H29/00; B65H29/54; B65H29/56; Y; Y10; Y10S; Y10S271/00; Y10S271/90
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
173 words
In a copying machine in which a toner image is transferred from an image retaining member to a recording paper and, after the transfer of said toner image, said recording paper is separated from said image retaining member by the operation of a first separation means and ejected to the outside of said machine, the improvement comprising: a detection means for detecting a separation failure of said recording paper, a recording paper conveying means displaceable to open the passage of said recording paper, and a second separation means for separating, from said image retaining member, said recording paper which is attaching to said image retaining member due to said separation failure, said detection means being adapted to produce a detection signal for displacing said recording paper conveying means to open said passage of said recording paper and to actuate said second separation means so as to separate said recording paper onto said conveying means, said conveying means being adapted to be reset thereafter to the ordinary position thereby to release the separation failure.
Claim 2
Dependent Claim
173 words
In a copying machine in which a toner image is transferred from an image retaining member to a recording paper and, after the transfer of said toner image, said recording paper is separated from said image retaining member by the operation of a first separation means and ejected to the outside of said machine, the improvement comprising: a detection means for detecting a separation failure of said recording paper, a recording paper conveying means displaceable to open the passage of said recording paper, and a second separation means for separating, from said image retaining member, said recording paper which is attaching to said image retaining member due to said separation failure, said detection means being adapted to produce a detection signal for displacing said recording paper conveying means to open said passage of said recording paper and to actuate said second separation means so as to separate said recording paper onto said conveying means, said conveying means being adapted to be reset thereafter to the ordinary position thereby to release the separation failure.
Claim 3
Dependent Claim
17 words
A copying maching according to claim 1, wherein said second separation means is a paper registration roller.
Claim 4
Dependent Claim
19 words
A copying machine according to claim 1, wherein said detection means comprises a light-emitting element and a light-receiving element.
Claim 5
Dependent Claim
21 words
A copying machine according to claim 1, wherein a means for displacing said recording paper conveying means is a release lever.
Claim 6
Dependent Claim
45 words
A copying machine according to claim 1, wherein said second separation means comprises a paper feeding roller for feeding said recording paper to said passage of the recording paper and a means for rotating said feeding roller in the opposite direction to said feeding direction.
Claim 7
Dependent Claim
153 words
In a copying machine in which a toner image is transferred from an image retaining member to a recording paper and, after the transfer of said toner image, said recording paper is separated from said image retaining member by the operation of a first separation means and ejected to the outside of said machine, the improvement comprising: a second separation means for forcibly separating, from said image retaining member, said recording paper which is attaching to said image retaining member due to a separation failure of said recording paper, said second separation means being arranged adjacent to said image retaining member; a recording paper conveying means for conveying said recording paper to the outside of said machine; and a detection means for detecting only said recording paper forcibly separated by said second separation means so as to distinguish said forcibly separated recording paper from the recording paper separated by said first separation means.
Claim 8
Dependent Claim
153 words
In a copying machine in which a toner image is transferred from an image retaining member to a recording paper and, after the transfer of said toner image, said recording paper is separated from said image retaining member by the operation of a first separation means and ejected to the outside of said machine, the improvement comprising: a second separation means for forcibly separating, from said image retaining member, said recording paper which is attaching to said image retaining member due to a separation failure of said recording paper, said second separation means being arranged adjacent to said image retaining member; a recording paper conveying means for conveying said recording paper to the outside of said machine; and a detection means for detecting only said recording paper forcibly separated by said second separation means so as to distinguish said forcibly separated recording paper from the recording paper separated by said first separation means.
Claim 9
Dependent Claim
37 words
A copying machine according to claim 6, wherein said second separation means comprises a separation member keeping clearance away from said image retaining member, said clearance having an order thinner than a thickness of said recording paper.
Claim 10
Dependent Claim
19 words
A copying machine according to claim 6, wherein said detection means comprises a light-emitting element and a light-receiving element.
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) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |