US4861017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper-feeding device
Assignee: Kyocera Mita Industrial Co Ltd
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Filing: 1987-10-22
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Granted: 1989-08-29
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Expires: 2007-10-22
Abstract
Abstract A paper-feeding device which includes a paper-feeding cassette removably located into an image processing apparatus, a locking mechanism for inhibiting extraction of the paper-feeding cassette by engaging with the cassette or a cassette mount, and a locking control device for activating operation of the locking mechanism while a paper-feeding operation is underway. Since the locking control device remains activated while the paper-feeding operation is underway, the operator cannot extract the paper-feeding cassette from the image processing apparatus during a paper-feeding operation.
Inventors
- 👤 Kiyonori Yamamoto
- 👤 Osamu Sota
- 👤 Masahiko Sakae
- 👤 Yoshinori Makiura
- 👤 Masahiro Murakami
- 👤 Toshiyuki Mitsuya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:07
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6502
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
170 words
A paper-feeding device for feeding paper in a paper-conveying direction to an image processing apparatus, said device comprising: a paper-feeding cassette means including a paper-feeding cassette and a paper-feeding cassette mount, said cassette being adapted for loading into the image processing apparatus and removable from the image processing apparatus in a direction substantially perpendicular to said paper-conveying direction. locking means for engaging said paper-feeding cassette means to prevent said paper feeding cassette from being removed from the image processing apparatus; and locking control means for controlling said locking means to engage said paper-feeding cassette means during a paper-feeding operation and during a paper jam in a paper-feeding path, said locking-control means comprising means for determining a condition when a copying paper fails to pass through a predetermined position during a specific period of time from a start-up of copying paper delivery from said paper-feeding cassette, said locking control means causing said locking means to engage said paper-feeding cassette means in response to determination of said condition by said determining means.
Claim 2
Dependent Claim
170 words
A paper-feeding device for feeding paper in a paper-conveying direction to an image processing apparatus, said device comprising: a paper-feeding cassette means including a paper-feeding cassette and a paper-feeding cassette mount, said cassette being adapted for loading into the image processing apparatus and removable from the image processing apparatus in a direction substantially perpendicular to said paper-conveying direction. locking means for engaging said paper-feeding cassette means to prevent said paper feeding cassette from being removed from the image processing apparatus; and locking control means for controlling said locking means to engage said paper-feeding cassette means during a paper-feeding operation and during a paper jam in a paper-feeding path, said locking-control means comprising means for determining a condition when a copying paper fails to pass through a predetermined position during a specific period of time from a start-up of copying paper delivery from said paper-feeding cassette, said locking control means causing said locking means to engage said paper-feeding cassette means in response to determination of said condition by said determining means.
Claim 3
Dependent Claim
29 words
A paper-feeding device according to claim 1, wherein said locking means comprises a stopper and an engaging member secured to said paper-feeding cassette means for engagement with said stopper.
Claim 4
Dependent Claim
35 words
A paper-feeding device according to claim 1, wherein said locking control means causes said locking means to disengage from said paper-feed cassette means when a cover of the image processing apparatus is opened or closed.
Claim 5
Dependent Claim
22 words
A paper-feeding device according to claim 1, wherein said paper-feeding cassette is substantially an insertion tray of a duplex image processing apparatus.
Claim 6
Dependent Claim
63 words
A paper-feeding device according to claim 1, wherein said cassette means is insertable into a predetermined position inside of the image processing apparatus and a detectable member is provided on a tip surface of said paper-feeding cassette means, said detectable member being detectable by a detecting device of the image processing apparatus when said cassette means is fully inserted into said predetermined position.
Claim 7
Dependent Claim
67 words
A paper-feeding device according to claim 1, wherein said cassette means is insertable into a predetermined position inside of the image processing apparatus and a detecting device for detecting a detectable member of the image processing apparatus is provided on a tip surface of said paper-feeding cassette means, said member being detectable by said detecting device when said cassette means is fully inserted into said predetermined position.
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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) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |