US4542976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Partially openable image forming apparatus
Assignee: Canon Inc
•
Filing: 1983-04-25
•
Granted: 1985-09-24
•
Expires: 2003-04-25
Abstract
Abstract In an image forming apparatus having an upper and a lower frame which are discrete from each other, first control means for holding and controlling the upper and lower frames in a partly open position smaller than the fully open position of the upper and lower frames, second control means for holding and controlling the upper and lower frames in the fully open position thereof, and third control means for holding and controlling the upper and lower frames in the fully closed position thereof.
Inventors
- 👤 Toshirou Kasamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:58
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/1604; G03G21/1623; G03G21/1628; G03G21/1661; G03G2221/00; G03G2221/16; G03G2221/1651; G03G2221/1654; G03G2221/1672; G03G2221/1675; G03G2221/1678; G03G2221/1684; G03G2221/1687
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
119 words
An image forming apparatus having: an upper and a lower structure which are discrete from each other; an image formation process kit removably held by said upper structure; first control means for holding and controlling said upper and lower structures in a partly open position smaller than the fully open position of said upper and lower structures to render said image formation process kit removably mountable in said partly open position; second control means for holding and controlling said upper and lower structures in the fully open position thereof to enable paper jam or the like to be dealt with; and third control means for holding and controlling said upper and lower structures in the fully closed position thereof.
Claim 2
Dependent Claim
119 words
An image forming apparatus having: an upper and a lower structure which are discrete from each other; an image formation process kit removably held by said upper structure; first control means for holding and controlling said upper and lower structures in a partly open position smaller than the fully open position of said upper and lower structures to render said image formation process kit removably mountable in said partly open position; second control means for holding and controlling said upper and lower structures in the fully open position thereof to enable paper jam or the like to be dealt with; and third control means for holding and controlling said upper and lower structures in the fully closed position thereof.
Claim 3
Dependent Claim
23 words
An image forming apparatus according to claim 1, wherein said process kit includes an image bearing member and a container for containing developer.
Claim 4
Dependent Claim
26 words
An image forming apparatus according to claim 2, wherein said developer container is included in a cleaning device for removing developer from said image bearing member.
Claim 5
Dependent Claim
18 words
An image forming apparatus according to claim 2, wherein said developer container is included in a developing device.
Claim 6
Dependent Claim
25 words
An image forming apparatus according to claim 4, wherein said process kit further includes a cleaning device for removing developer from said image bearing member.
Claim 7
Dependent Claim
89 words
An image forming apparatus comprising: an apparatus body having a first housing and a second housing openable so as to be inclined with respect to said first housing; a process kit removably mounted to said second housing, said process kit including an image bearing member, a container to contain a developer, and supporting means to support said image bearing member and said container; and means for holding said first and second housings in an open state at an angle smaller than the fully opened angle therebetween to permit maintenance.
Claim 8
Dependent Claim
89 words
An image forming apparatus comprising: an apparatus body having a first housing and a second housing openable so as to be inclined with respect to said first housing; a process kit removably mounted to said second housing, said process kit including an image bearing member, a container to contain a developer, and supporting means to support said image bearing member and said container; and means for holding said first and second housings in an open state at an angle smaller than the fully opened angle therebetween to permit maintenance.
Claim 9
Dependent Claim
34 words
An image forming apparatus according to claim 6, wherein said developer container is a developing device and wherein said process kit further includes a cleaning device for removing developer from said image bearing member.
Claim 10
Dependent Claim
61 words
An image forming apparatus comprising: a first housing; a second housing openable so as to be inclined to said first housing and removably holding an image bearing member and a container for containing a developer; and means for holding said first and second housings in an open state at an angle smaller than the fully opened angle therebetween to permit maintenance.
Claim 11
Dependent Claim
61 words
An image forming apparatus comprising: a first housing; a second housing openable so as to be inclined to said first housing and removably holding an image bearing member and a container for containing a developer; and means for holding said first and second housings in an open state at an angle smaller than the fully opened angle therebetween to permit maintenance.
Claim 12
Dependent Claim
18 words
An image forming apparatus according to claim 6 or 8, wherein said developer container is a developing device.
Claim 13
Dependent Claim
26 words
An image forming apparatus according to claim 6 or 8, wherein said developer container is a cleaning device for removing developer from said image bearing member.
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) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |