EP0433061A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Process cartridge detachably mountable to image forming apparatus
Assignee: Canon Inc
•
Filing: 1990-12-13
•
Granted: —
•
Expires: 2010-12-13
Abstract
Abstract A process cartridge detachably mountable to an image forming apparatus includes an image bearing member (2); a developing device having a developer carrying member (3); a supporting device for supporting the image bearing member and the developer carrying member; a first device (6) actable on the image bearing member (2); a second device actable (7) on the developer carrying member; wherein the image bearing member (2) and the developer carrying member (3) are urged toward each other by the first and second devices.
Inventors
- 👤 Isao Ikemoto
- 👤 Kazushi Watanabe
- 👤 Tadayuki Tsuda
- 👤 Shinichi Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 02:20
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1803; G03G21/1817; G03G21/1821; G03G2221/00; G03G2221/16; G03G2221/1606; G03G2221/1618; G03G2221/1627; G03G2221/163; G03G2221/1633; G03G2221/1648; G03G2221/1651; G03G2221/1654; G03G2221/18; G03G2221/183; G03G2221/1853
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
72 words
A process cartridge detachably mountable to an image forming apparatus, comprising: an image bearing member; developing means having a developer carrying member; supporting means for supporting said image bearing member and said developer carrying member; first means actable on said image bearing member; second means actable on said developer carrying member; wherein said image bearing member and said developer carrying member are urged toward each other by said first and second means.
Claim 2
Dependent Claim
16 words
A process cartridge according to Claim 1, wherein said first means includes an elastic cleaning member.
Claim 3
Dependent Claim
15 words
A process cartridge according to Claim 2, wherein said cleaning member includes a rubber blade.
Claim 4
Dependent Claim
32 words
A process cartridge according to Claim 1 or 2, wherein said second means includes an elastic member for regulating a thickness of a layer of the developer on said developer carrying member.
Claim 5
Dependent Claim
15 words
A process cartridge according to Claim 4, wherein said regulating member includes a rubber blade.
Claim 6
Dependent Claim
35 words
A process cartridge according to Claim 1, wherein said image bearing member and said developer carrying member each include a cylindrical member, and said supporting means supports the outer peripheral surface of the cylindrical member.
Claim 7
Dependent Claim
29 words
A process cartridge according to Claim 6, wherein said supporting member includes a spacer for maintaining a predetermined gap between said image bearing member and said developer carrying member.
Claim 8
Dependent Claim
36 words
A process cartridge according to Claim 1, 2 or 4, wherein said first and second means each include a sealing member actable on said image bearing member and said developer carrying member at end portions thereof.
Claim 9
Dependent Claim
35 words
A process cartridge according to Claim 8, wherein said sealing members are sandwiched between said image bearing member and a casing of said process cartridge and between said developer carrying member and the casing, respectively.
Claim 10
Dependent Claim
18 words
A process cartridge according to Claim 8, wherein said sealing member functions to prevent the developer from scattering.
Claim 11
Dependent Claim
22 words
A process cartridge according to Claim 1 or 6, wherein said supporting means functions also as a casing for the process cartridge.
Claim 12
Dependent Claim
16 words
A process cartridge according to Claim 11, wherein the casing is integrally molded with resin material.
Claim 13
Dependent Claim
22 words
A process cartridge according to Claim 1, wherein said first and second means are supported by a casing of the process cartridge.
Claim 14
Dependent Claim
16 words
A process cartridge according to Claim 13, wherein the casing is integrally molded with resin material.
Claim 15
Dependent Claim
20 words
A process cartridge according to Claim 1, wherein said first means is process means actable on said image bearing member.
Claim 16
Dependent Claim
63 words
A process cartridge for an image forming machine, of the kind which includes a casing containing a rotatable image bearing member and a rotatable developer member, is characterised in that the spacing between the image bearing member and the developer member is maintained substantially constant by an element or elements which serve another purpose either within the casing or as part of it.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.