EP0419122A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Image forming apparatus
Assignee: Canon Inc
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Filing: 1990-09-12
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Granted: —
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Expires: 2010-09-12
Abstract
Abstract A process cartridge (1) detachably mountable to an image forming apparatus includes an image bearing drum (3); process device actable on the image bearing drum (3); a housing (2) for accommodating the image bearing drum and the process device; and supporting means (8,9) for rotatably supporting the image bearing drum (3) at an outer periphery of the image bearing drum (3).
Inventors
- 👤 Tadayuki Tsuda
- 👤 Kazushi Watanabe
- 👤 Isao Ikemoto
- 👤 Shinichi Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 03:06
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1803; G03G21/181; G03G15/00; G03G15/75; G03G15/757; G03G21/1814; G03G2221/00; G03G2221/16; G03G2221/1606; G03G2221/163; G03G2221/1651; G03G2221/1654; G03G2221/18; G03G2221/183; G03G2221/1853
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
54 words
A process cartridge detachably mountable to an image forming apparatus, comprising: an image bearing drum; process means actable on said image bearing drum; a housing for accommodating said image bearing drum and said process means; and supporting means for rotatably supporting said image bearing drum at an outer periphery of said image bearing drum.
Claim 2
Dependent Claim
54 words
A process cartridge detachably mountable to an image forming apparatus, comprising: an image bearing drum; process means actable on said image bearing drum; a housing for accommodating said image bearing drum and said process means; and supporting means for rotatably supporting said image bearing drum at an outer periphery of said image bearing drum.
Claim 3
Dependent Claim
14 words
A cartridge according to Claim 1, wherein said housing functions as said supporting means.
Claim 4
Dependent Claim
20 words
A cartridge according to Claim 1 or 2, wherein said process means includes charging means, developing meansr and cleaning means.
Claim 5
Dependent Claim
80 words
A process cartridge detachably mountable to an image forming apparatus, comprising: an image bearing drum; process means actable on said image bearing drum, said process means including a developing roller for carrying a developer to supply the developer to said image bearing drum; a housing for accommodating said image bearing drum and said process means; and supporting means for rotatably supporting an outer periphery of said image bearing drum and for rotatably supporting an outer periphery of said developing roller.
Claim 6
Dependent Claim
80 words
A process cartridge detachably mountable to an image forming apparatus, comprising: an image bearing drum; process means actable on said image bearing drum, said process means including a developing roller for carrying a developer to supply the developer to said image bearing drum; a housing for accommodating said image bearing drum and said process means; and supporting means for rotatably supporting an outer periphery of said image bearing drum and for rotatably supporting an outer periphery of said developing roller.
Claim 7
Dependent Claim
24 words
A cartridge according to Claim 4, further comprising a spacer for maintaining a predetermined clearance between said image bearing drum and said developing roller.
Claim 8
Dependent Claim
16 words
A cartridge according to Claim 1 or 2, wherein said housing functions as said supporting means.
Claim 9
Dependent Claim
17 words
A cartridge according to Claim 1, wherein said process means further comprises charging means and cleaning means.
Claim 10
Dependent Claim
60 words
A process cartridge detachably mountable to an image forming apparatus, comprising: an image bearing drum; at least one process means actable on said image bearing drum; a housing for accommodating said image bearing drum and said process means; supporting means for rotatably supporting an outer periphery of said image bearing drum, wherein said supporting means further supports said process means.
Claim 11
Dependent Claim
60 words
A process cartridge detachably mountable to an image forming apparatus, comprising: an image bearing drum; at least one process means actable on said image bearing drum; a housing for accommodating said image bearing drum and said process means; supporting means for rotatably supporting an outer periphery of said image bearing drum, wherein said supporting means further supports said process means.
Claim 12
Dependent Claim
13 words
A cartridge according to Claim 8, wherein said supporting means supports cleaning means.
Claim 13
Dependent Claim
13 words
A cartridge according to Claim 8, wherein said supporting means supports charging means.
Claim 14
Dependent Claim
15 words
A cartridge according to Claim 5, wherein said spacer is mounted on said supporting means.
Claim 15
Dependent Claim
27 words
A process cartridge for image forming apparatus comprising two parallel rotatable members rotatably supported within a housing, characterised in that the housing is a single unitary body.
Claim 16
Dependent Claim
27 words
A process cartridge for image forming apparatus comprising two parallel rotatable members rotatably supported within a housing, characterised in that the housing is a single unitary body.
Claim 17
Dependent Claim
52 words
A process cartridge for an image forming apparatus comprising a rotatable member and a further member having a predetermined position relative to the rotatable member, characterised in that the rotatable member is supported at an outer periphery thereof so as accurately to define its spatial relationship with the other member during rotation.
Claim 18
Dependent Claim
52 words
A process cartridge for an image forming apparatus comprising a rotatable member and a further member having a predetermined position relative to the rotatable member, characterised in that the rotatable member is supported at an outer periphery thereof so as accurately to define its spatial relationship with the other member during rotation.
Claim 19
Dependent Claim
64 words
A process cartridge for image forming apparatus, comprising; an image bearing drum; and process means actable on said image bearing drum, said process means including a rotatable member aligned parallel to said image bearing drum; characterised in that it includes spacer means positioned between the peripheries of the image bearing drum and the rotatable member, for maintaining a constant clearance therebetween during rotation thereof.
Claim 20
Dependent Claim
64 words
A process cartridge for image forming apparatus, comprising; an image bearing drum; and process means actable on said image bearing drum, said process means including a rotatable member aligned parallel to said image bearing drum; characterised in that it includes spacer means positioned between the peripheries of the image bearing drum and the rotatable member, for maintaining a constant clearance therebetween during rotation thereof.
Claim 21
Dependent Claim
36 words
A process cartridge for image forming apparatus including a rotatable member having a drive coupling for coupling to a rotating drive, characterised in that the drive coupling is disposed at the periphery of the rotatable member.
Claim 22
Dependent Claim
36 words
A process cartridge for image forming apparatus including a rotatable member having a drive coupling for coupling to a rotating drive, characterised in that the drive coupling is disposed at the periphery of the rotatable member.
Claim 23
Dependent Claim
14 words
Image forming apparatus including the features of a cartridge according to any preceding claim.
References Cited (Backward Citations)
No citation records indexed.
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