US4589758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image forming apparatus having a pair of openable housing sections
Assignee: Canon Inc
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Filing: 1984-10-19
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Granted: 1986-05-20
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Expires: 2004-10-19
Abstract
Abstract An image forming apparatus has a first housing supporting the entire apparatus, a second housing openable relative to the first housing, image forming means for forming on an image bearing member a toner image corresponding to image information to be recorded, a first and a second rotatable member for holding the image bearing member therebetween and conveying the same to fix the toner image formed by the image forming means on the image bearing member, and resilient means acting to open the second housing relative to the first housing and acting for the pressing between the first rotatable member and the second rotatable member.
Inventors
- 👤 Nobuhiro Kasama
- 👤 Mitsuru Kurata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:25
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/1604; G03G21/1623; G03G21/1638; G03G15/00; G03G15/20; G03G15/2092; G03G21/1628; G03G2221/00; G03G2221/16; G03G2221/1639; G03G2221/1651; G03G2221/1654; G03G2221/1672; G03G2221/1675; G03G2221/1678; G03G2221/1687
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
148 words
An image forming apparatus comprising: a housing capable of being divided to open, said housing having, a first housing, a second housing openable and closable with respect to said first housing around an axis, image forming means for forming on an image bearing member a toner image corresponding to image information to be recorded, and fixing means for fixing the toner image formed on said image bearing member, said fixing means comprising first and second rotatable members for conveying said image bearing member while pinching and pressing it; locking means for locking said second housing to said first housing; and resilient means for pressing said first rotatable member and said second rotatable member when the second housing is locked by said locking means to the first housing, and for urging said second housing to open it with respect to the first housing when said locking means is released.
Claim 2
Dependent Claim
148 words
An image forming apparatus comprising: a housing capable of being divided to open, said housing having, a first housing, a second housing openable and closable with respect to said first housing around an axis, image forming means for forming on an image bearing member a toner image corresponding to image information to be recorded, and fixing means for fixing the toner image formed on said image bearing member, said fixing means comprising first and second rotatable members for conveying said image bearing member while pinching and pressing it; locking means for locking said second housing to said first housing; and resilient means for pressing said first rotatable member and said second rotatable member when the second housing is locked by said locking means to the first housing, and for urging said second housing to open it with respect to the first housing when said locking means is released.
Claim 3
Dependent Claim
36 words
An apparatus according to claim 1, wherein said resilient means has such a resilient force that said second housing may be kept open relative to said first housing and said second housing may be supported thereby.
Claim 4
Dependent Claim
61 words
An apparatus according to claim 1, wherein said apparatus further comprises a second resilient means provided independently of said first resilient means, said second resilient means having such a resilient force that said second housing may be assisted thereby to open, said second housing may be kept open relative to said first housing, and said second housing may be supported thereby.
Claim 5
Dependent Claim
14 words
An apparatus according to claim 1, wherein said fixing means is pressure fixing means.
Claim 6
Dependent Claim
197 words
An image forming apparatus comprising: a housing capable of being divided to open, said housing having, a first housing, a second housing openable and closable with respect to said first housing around an axis, image forming means for forming on an image bearing member a toner image corresponding to image information to be recorded, and fixing means for fixing the toner image formed on said image bearing member, said fixing means comprising first and second rotatable members for conveying said image bearing member while pinching and pressing it, and support means for supporting said first rotatable member rotatably, said second rotatable member being rotatably supported on the second housing side, an end of said support means being rockably supported on the second housing; resilient means connected to said first housing at one end thereof and to said support means at the other end thereof, said resilient means providing a pressing force between said first rotatable member and said second rotatable member when said second housing is closed with respect to the first housing, said resilient means also providing said second housing with an opening force when said second housing is opened with respect to the first housing.
Claim 7
Dependent Claim
197 words
An image forming apparatus comprising: a housing capable of being divided to open, said housing having, a first housing, a second housing openable and closable with respect to said first housing around an axis, image forming means for forming on an image bearing member a toner image corresponding to image information to be recorded, and fixing means for fixing the toner image formed on said image bearing member, said fixing means comprising first and second rotatable members for conveying said image bearing member while pinching and pressing it, and support means for supporting said first rotatable member rotatably, said second rotatable member being rotatably supported on the second housing side, an end of said support means being rockably supported on the second housing; resilient means connected to said first housing at one end thereof and to said support means at the other end thereof, said resilient means providing a pressing force between said first rotatable member and said second rotatable member when said second housing is closed with respect to the first housing, said resilient means also providing said second housing with an opening force when said second housing is opened with respect to the first housing.
Claim 8
Dependent Claim
36 words
An apparatus according to claim 5, wherein said resilient means has such a resilient force that said second housing may be kept open relative to said first housing and said second housing may be supported thereby.
Claim 9
Independent Claim
45 words
An apparatus according to 5, wherein said apparatus further comprises stopper means for limiting the extension of said resilient means, and said second housing being further openable with respect to the first housing after said stopper means has stopped the extension of said resilient means.
Claim 10
Independent Claim
45 words
An apparatus according to 5, wherein said apparatus further comprises stopper means for limiting the extension of said resilient means, and said second housing being further openable with respect to the first housing after said stopper means has stopped the extension of said resilient means.
Claim 11
Dependent Claim
61 words
An apparatus according to claim 5, wherein said apparatus further comprises a second resflient means provided independently of said first resilient means, said second resilient means having such a resilient force that said second housing may be assisted thereby to open, said second housing may be kept open relative to said first housing, and said second housing may be supported thereby.
Claim 12
Dependent Claim
14 words
An apparatus according to claim 5, wherein said fixing means is pressure fixing means.
Claim 13
Dependent Claim
22 words
An apparatus according to claim 5, wherein said apparatus further comprises locking means for locking said second housing to said first housing.
Claim 14
Dependent Claim
195 words
An image forming apparatus comprising: a housing capable of being divided to open, said housing having, a first housing, a second housing openable and closable with respect to said first housing around an axis, image forming means for forming on an image bearing member a toner image corresponding to image information to be recorded, and fixing means for fixing the toner image formed on said image bearing member, said fixing means comprising first and second rotatable members for conveying said image bearing member while pinching and pressing it, and support means for supporting said second rotatable member rotatably, said first rotatable member being rotatably supported on the first housing side, an end of said support means being rockably supported on the first housing; resilient means connected to said second one end thereof and to said support means at the other end thereof, said resilient means providing a pressing force between said first rotatable member and said second rotatable member when said second housing is closed with respect to the first housing, said resilient means also providing said second housing with an opening force when said second housing is opened with respect to the first housing.
Claim 15
Dependent Claim
195 words
An image forming apparatus comprising: a housing capable of being divided to open, said housing having, a first housing, a second housing openable and closable with respect to said first housing around an axis, image forming means for forming on an image bearing member a toner image corresponding to image information to be recorded, and fixing means for fixing the toner image formed on said image bearing member, said fixing means comprising first and second rotatable members for conveying said image bearing member while pinching and pressing it, and support means for supporting said second rotatable member rotatably, said first rotatable member being rotatably supported on the first housing side, an end of said support means being rockably supported on the first housing; resilient means connected to said second one end thereof and to said support means at the other end thereof, said resilient means providing a pressing force between said first rotatable member and said second rotatable member when said second housing is closed with respect to the first housing, said resilient means also providing said second housing with an opening force when said second housing is opened with respect to the first housing.
Claim 16
Dependent Claim
36 words
An apparatus according to claim 11, wherein said resilient means has such a resilient force that said second housing may be kept open relative to said first housing and said second housing may be supported thereby.
Claim 17
Dependent Claim
46 words
An apparatus according to claim 11, wherein said apparatus further comprises stopper means for limiting the extension of said resilient means, and said second housing being further openable with respect to the first housing after said stopper means has stopped the extension of said resilient means.
Claim 18
Dependent Claim
61 words
An apparatus according to claim 11, wherein said apparatus further comprises a second resilient means provided independently of said first resilient means, said second resilient means having such a resilient force that said second housing may be assisted thereby to open, said second housing may be kept open relative to said first housing, and said second housing may be supported thereby.
Claim 19
Dependent Claim
14 words
An apparatus according to claim 11, wherein said fixing means is pressure fixing means.
Claim 20
Independent Claim
20 words
An apparatus according 11, wherein said apparatus further comprises locking means for locking said second housing to said first housing.
Claim 21
Independent Claim
20 words
An apparatus according 11, wherein said apparatus further comprises locking means for locking said second housing to said first housing.
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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) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |