US4598993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process unit and image formation apparatus provided with the process unit
Assignee: Canon Inc
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Filing: 1985-04-23
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Granted: 1986-07-08
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Expires: 2005-04-23
Abstract
Abstract This specification discloses a process unit and an image formation apparatus provided with the process unit. The process unit is detachable with respect to the body of the image formation apparatus, and is characterized by process means acting on an image bearing member, and a guide member in the form of a grip provided at a position capable of maintaining the process unit in substantially horizontal condition, along the direction in which the process unit is mounted or dismounted with respect to the apparatus body, the guide member also performing the function of a grip during transportation of the process unit. The image formation apparatus is characterized by the process unit and support means for detachably supporting the guide member of the process unit.
Inventors
- 👤 Morikazu Mizutani
- 👤 Shigeyoshi Onoda
- 👤 Akihiro Nomura
- 👤 Shinji Kanemitsu
- 👤 Mototada Toriumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:27
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1839; G03G21/1842; G03G21/1846; G03G21/1604; G03G21/1623; G03G21/1633; G03G2221/00; G03G2221/16; G03G2221/1648; G03G2221/1651; G03G2221/18; G03G2221/183; G03G2221/1846
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
107 words
A process unit having means for forming an image and removably mountable on an image forming apparatus body, the process unit comprising: an image bearing member; developer storing means for storing developer; supporting means for supporting said image bearing member and said developer storing means on said body with respective longitudinal axes thereof extending horizontally; a handle means extending in the direction of said longitudinal axes provided at said supporting means and constructed and arranged relative to said process unit so that when said process unit is dismounted from said image formation apparatus body and transported by said handle means, said longitudinal axes are maintained substantially horizontal.
Claim 2
Dependent Claim
107 words
A process unit having means for forming an image and removably mountable on an image forming apparatus body, the process unit comprising: an image bearing member; developer storing means for storing developer; supporting means for supporting said image bearing member and said developer storing means on said body with respective longitudinal axes thereof extending horizontally; a handle means extending in the direction of said longitudinal axes provided at said supporting means and constructed and arranged relative to said process unit so that when said process unit is dismounted from said image formation apparatus body and transported by said handle means, said longitudinal axes are maintained substantially horizontal.
Claim 3
Dependent Claim
18 words
A process unit according to claim 1, wherein said developer storing means forms a part of developing means.
Claim 4
Dependent Claim
17 words
A process unit according to claim 2, wherein said process unit includes image bearing member cleaning means.
Claim 5
Dependent Claim
20 words
A process unit according to claim 2, wherein each of said developing means and cleaning means includes developer storing means.
Claim 6
Dependent Claim
24 words
A process unit according to claim 1, wherein said handle means serves as a guide when said unit is mounted on said apparatus body.
Claim 7
Dependent Claim
148 words
An image forming apparatus having a body and means for removably supporting on said body a process unit having means for forming an image, said apparatus comprising: a process unit having an image bearing member, developer storing means for storing developer, supporting means for supporting said image bearing member and said developer storing means on said body with respective longitudinal axes thereof extending horizontally, and handle means extending in the direction of said longitudinal axes provided at said supporting means and constructed and arranged relative to said process unit so that when said process unit is dismounted from said image forming apparatus body and transported by said handle means said longitudinal axes are maintained substantially horizontal; process means acting on the image bearing member of said process unit for forming an image; and guide means for guiding said process unit to a predetermined position of the apparatus body.
Claim 8
Dependent Claim
148 words
An image forming apparatus having a body and means for removably supporting on said body a process unit having means for forming an image, said apparatus comprising: a process unit having an image bearing member, developer storing means for storing developer, supporting means for supporting said image bearing member and said developer storing means on said body with respective longitudinal axes thereof extending horizontally, and handle means extending in the direction of said longitudinal axes provided at said supporting means and constructed and arranged relative to said process unit so that when said process unit is dismounted from said image forming apparatus body and transported by said handle means said longitudinal axes are maintained substantially horizontal; process means acting on the image bearing member of said process unit for forming an image; and guide means for guiding said process unit to a predetermined position of the apparatus body.
Claim 9
Dependent Claim
36 words
An image forming apparatus according to claim 6, wherein said handle portion of the process unit engages with said guide means of the unit to guide the unit to a predetermined position of the apparatus body.
Claim 10
Dependent Claim
19 words
An image forming apparatus according to claim 6, wherein said developer storing means forms a part of developing means.
Claim 11
Dependent Claim
17 words
An image forming apparatus according to claim 6, wherein said process unit includes image bearing cleaning means.
Claim 12
Dependent Claim
20 words
An image forming apparatus according to claim 6, wherein each of developing means and cleaning means includes developer storing means.
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) | 1989-07-07 | 1990-01-06 | 1990-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-07 | 1994-01-06 | 1994-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-07 | 1998-01-06 | 1998-07-08 | $7700.00 | Window Closed / Lapsed |