Patent US5283142A successfully refreshed from Google Patents.
US5283142A
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Image-holding member, and electrophotographic apparatus, apparatus unit, and facsimile machine employing the same
Assignee: Canon Inc
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Filing: 1992-02-19
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Granted: 1994-02-01
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Expires: 2012-02-19
Abstract
Abstract The present invention provides an image-holding member which comprises an electroconductive support and a resin layer formed on the support, wherein the surface layer of the image-holding member contains a copolymer having the structure units represented by the formulas [I] and [II]: ##STR1## where A is a linear, branched or cyclic alkylidene group of 1 to 10 carbon atoms, an aryl-substituted alkylidene group, arylene-dialkylidene group, --O--, --S--, --CO--, --SO--, or --SO 2 --; and R 1 , R 2 , R 3 , and R 4 are respectively hydrogen, halogen, or an alkyl or alkenyl group of 1 to 4 carbons; ##STR2## where R 5 is an alkylene or alkylidene group of 2 to 6 carbons; R 6 and R 7 are respectively an alkyl group of 1 to 3 carbons, a phenyl or substituted phenyl group; and n is an integer of from 1 to 200, and the copolymer containing the structure unit of the formula [II] in an amount of from 0.1 to 50% by weight Of the total weight of the copolymer.
Inventors
- 👤 Shinya Mayama
- 👤 Naoto Fujimura
- 👤 Kiyoshi Sakai
- 👤 Noriko Ohtani
- 👤 Katsumi Aoki
- 👤 Noriyoshi Ogawa
- 👤 Satoshi Kanayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:02
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/147; C; C08; C08G; C08G64/00; C08G64/18; C08G64/186; C08G77/00; C08G77/42; C08G77/448; G03G5/02; G03G5/04; G03G5/05; G03G5/0528; G03G5/0557; G03G5/0564; G03G5/0578; G03G5/0582
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
170 words
An electrophotographic image-holding member, comprising an electroconductive support and a resin layer formed on the support, the surface layer of the image-holding member containing a copolymer having the structure units represented by the formulas [I] and [II]: ##STR34## wherein A is a linear, branched or cyclic alkylidene group of 1 to 10 carbon atoms, an aryl-substituted alkylidene group, arylene-dialkylidene group, --O--, --S--, --CO--, --SO--, or --SO 2 --; and R 1 , R 2 , R 3 , and R 4 are respectively hydrogen, halogen, or an alkyl or alkenyl group of 1 to 4 carbons; ##STR35## where R 5 is an alkylene or alkylidene group of 2 to 6 carbons; R 6 and R 7 are respectively an alkyl group of 1 to 3 carbons, a phenyl or substituted phenyl group; and n is an integer of from 1 to 200, and the copolymer containing the structure unit of the formula [II] in an amount of from 0.1% to 50% by weight of the total weight of the copolymer.
Claim 2
Dependent Claim
170 words
An electrophotographic image-holding member, comprising an electroconductive support and a resin layer formed on the support, the surface layer of the image-holding member containing a copolymer having the structure units represented by the formulas [I] and [II]: ##STR34## wherein A is a linear, branched or cyclic alkylidene group of 1 to 10 carbon atoms, an aryl-substituted alkylidene group, arylene-dialkylidene group, --O--, --S--, --CO--, --SO--, or --SO 2 --; and R 1 , R 2 , R 3 , and R 4 are respectively hydrogen, halogen, or an alkyl or alkenyl group of 1 to 4 carbons; ##STR35## where R 5 is an alkylene or alkylidene group of 2 to 6 carbons; R 6 and R 7 are respectively an alkyl group of 1 to 3 carbons, a phenyl or substituted phenyl group; and n is an integer of from 1 to 200, and the copolymer containing the structure unit of the formula [II] in an amount of from 0.1% to 50% by weight of the total weight of the copolymer.
Claim 3
Dependent Claim
23 words
An electrophotographic image-holding member according to claim 1, wherein the structural unit of the formula [I] is represented by the formula below: ##STR36##
Claim 4
Dependent Claim
23 words
An electrophotographic image-holding member according to claim 1, wherein the structural unit of the formula [I] is represented by the formula below: ##STR37##
Claim 5
Dependent Claim
22 words
An image-holding member according to claim 1, wherein the structural unit of the formula [I] is represented by the formula below: ##STR38##
Claim 6
Dependent Claim
23 words
An electrophotographic image-holding member according to claim 1, wherein the structural unit of the formula [I] is represented by the formula below: ##STR39##
Claim 7
Dependent Claim
23 words
An electrophotographic image-holding member according to claim 1, wherein the structural unit of the formula [I] is represented by the formula below: ##STR40##
Claim 8
Dependent Claim
26 words
An electrophotographic image-holding member according to claim 1, wherein the group R 5 is selected from an ethylene group, a propylene group, and an isopropylene group.
Claim 9
Dependent Claim
16 words
An electrophotographic image-holding member according to claim 1, wherein the surface layer is a photosensitive layer.
Claim 10
Dependent Claim
20 words
An electrophotographic image-holding member according to claim 8, wherein the photosensitive layer comprises a charge-generating layer and a charge-transporting layer.
Claim 11
Dependent Claim
16 words
An electrophotographic image-holding member according to claim 9, wherein the charge-transporting layer is the surface layer.
Claim 12
Dependent Claim
16 words
An electrophotographic image-holding member according to claim 9, wherein the charge-generating layer is the surface layer.
Claim 13
Dependent Claim
16 words
An electrophotographic image-holding member according to claim 8, wherein the photosensitive member is a single layer.
Claim 14
Dependent Claim
16 words
An electrophotographic image-holding member according to claim 1, wherein the surface layer is a protecting layer.
Claim 15
Dependent Claim
24 words
An electrophotographic image-holding member according to claim 1, wherein the image-holding member has a subbing layer between the electroconductive support and the resin layer.
Claim 16
Dependent Claim
24 words
An electrophotographic image-holding member according to claim 1, wherein the image-holding member has an electroconductive layer between the electroconductive support and the resin layer.
Claim 17
Dependent Claim
210 words
An electrophotographic apparatus, comprising an electrophotographic image-holding member, a means for forming an electrostatic latent image, a means for developing the electrostatic latent image formed, and a means for transferring a developed image onto a transfer-receiving material; said image-holding member comprising an electroconductive support and a resin layer formed on the support, the surface layer of the image-holding member being formed from a copolymer having the structure units represented by the formulas [I] and [II]: ##STR41## where A is a linear, branched or cyclic alkylidene group of 1 to 10 carbon atoms, an aryl-substituted alkylidene group, arylene-dialkylidene group, --O--, --S--, --CO--, --SO--, or --SO 2 --; and R 1 , R 2 , R 3 , and R 4 are respectively hydrogen, halogen, or an alkyl or alkenyl group of 1 to 4 carbons; ##STR42## where R 5 is an alkylene or alkylidene group of 2 to 6 carbons; R 6 and R 7 are respectively an alkyl group of 1 to 3 carbons, a phenyl or substituted phenyl group; and n is an integer of from 1 to 200, and the copolymer containing the structure unit of the formula [II] is provided in an amount of from 0.1 to 50% by weight of the total weight of the copolymer.
Claim 18
Dependent Claim
210 words
An electrophotographic apparatus, comprising an electrophotographic image-holding member, a means for forming an electrostatic latent image, a means for developing the electrostatic latent image formed, and a means for transferring a developed image onto a transfer-receiving material; said image-holding member comprising an electroconductive support and a resin layer formed on the support, the surface layer of the image-holding member being formed from a copolymer having the structure units represented by the formulas [I] and [II]: ##STR41## where A is a linear, branched or cyclic alkylidene group of 1 to 10 carbon atoms, an aryl-substituted alkylidene group, arylene-dialkylidene group, --O--, --S--, --CO--, --SO--, or --SO 2 --; and R 1 , R 2 , R 3 , and R 4 are respectively hydrogen, halogen, or an alkyl or alkenyl group of 1 to 4 carbons; ##STR42## where R 5 is an alkylene or alkylidene group of 2 to 6 carbons; R 6 and R 7 are respectively an alkyl group of 1 to 3 carbons, a phenyl or substituted phenyl group; and n is an integer of from 1 to 200, and the copolymer containing the structure unit of the formula [II] is provided in an amount of from 0.1 to 50% by weight of the total weight of the copolymer.
Claim 19
Independent Claim
213 words
A device unit, comprising an electrophotographic image-holding member, a charging means, and a cleaning means; said image-holding member comprising an electroconductive support and a resin layer formed on the support, the surface layer of the image-holding member being formed from a copolymer having the structure units represented by the formulas [I] and [II]: ##STR43## where A is a linear, branched or cyclic alkylidene group of 1 to 10 carbon atoms, an aryl-substituted alkylidene group, arylene-dialkylidene group, --O--, --S--, --CO--, --SO--, or --SO 2 --; and R 1 , R 2 , R 3 , and R 4 are respectively hydrogen, halogen, or an alkyl or alkenyl group of 1 to 4 carbons; ##STR44## where R 5 is an alkylene or alkylidene group of 2 to 6 carbons; R 6 and R 7 are respectively an alkyl group of 1 to 3 carbons, a phenyl or substituted phenyl group; and n is an integer of from 1 to 200, and the copolymer containing the structure unit of the formula [II] is provided in an amount of from 0.1 to 50% by weight of the total weight of the copolymer, said unit holding integrally the image-holding member, the charging means, and the cleaning means, and being removable from the main body of an electrophotographic apparatus.
Claim 20
Independent Claim
213 words
A device unit, comprising an electrophotographic image-holding member, a charging means, and a cleaning means; said image-holding member comprising an electroconductive support and a resin layer formed on the support, the surface layer of the image-holding member being formed from a copolymer having the structure units represented by the formulas [I] and [II]: ##STR43## where A is a linear, branched or cyclic alkylidene group of 1 to 10 carbon atoms, an aryl-substituted alkylidene group, arylene-dialkylidene group, --O--, --S--, --CO--, --SO--, or --SO 2 --; and R 1 , R 2 , R 3 , and R 4 are respectively hydrogen, halogen, or an alkyl or alkenyl group of 1 to 4 carbons; ##STR44## where R 5 is an alkylene or alkylidene group of 2 to 6 carbons; R 6 and R 7 are respectively an alkyl group of 1 to 3 carbons, a phenyl or substituted phenyl group; and n is an integer of from 1 to 200, and the copolymer containing the structure unit of the formula [II] is provided in an amount of from 0.1 to 50% by weight of the total weight of the copolymer, said unit holding integrally the image-holding member, the charging means, and the cleaning means, and being removable from the main body of an electrophotographic apparatus.
Claim 21
Dependent Claim
14 words
A device unit according to claim 17, wherein the unit comprises a developing means.
Claim 22
Dependent Claim
200 words
A facsimile machine, comprising an electrophotographs apparatus and an information-receiving means for receiving image information from a remote terminal: said electrophotographic apparatus comprising an electrophotographic image-holding member, said image-holding member comprising an electroconductive support and a resin layer formed on the support, the surface layer of the image-holding member being formed from a copolymer having the structure units represented by the formulas [I] and [II]: ##STR45## where A is a linear, branched or cyclic alkylidene group of 1 to 10 carbon atoms, an aryl-substituted alkylidene group, arylene-dialkylidene group, --O--, --S--, --CO--, --SO--, or --SO 2 --; and R 1 , R 2 , R 3 , and R 4 are respectively hydrogen, halogen, or an alkyl or alkenyl group of 1 to 4 carbons; ##STR46## where R 5 is an alkylene or alkylidene group of 2 to 6 carbons: R 6 and R 7 are respectively an alkyl group of 1 to 3 carbons, a phenyl or substituted phenyl group and n is an integer of from 1 to 200, and the copolymer containing the structure unit of the formula [II] is provided in an amount of from 0.1 to 50% by weight of the total weight of the copolymer.
Claim 23
Dependent Claim
200 words
A facsimile machine, comprising an electrophotographs apparatus and an information-receiving means for receiving image information from a remote terminal: said electrophotographic apparatus comprising an electrophotographic image-holding member, said image-holding member comprising an electroconductive support and a resin layer formed on the support, the surface layer of the image-holding member being formed from a copolymer having the structure units represented by the formulas [I] and [II]: ##STR45## where A is a linear, branched or cyclic alkylidene group of 1 to 10 carbon atoms, an aryl-substituted alkylidene group, arylene-dialkylidene group, --O--, --S--, --CO--, --SO--, or --SO 2 --; and R 1 , R 2 , R 3 , and R 4 are respectively hydrogen, halogen, or an alkyl or alkenyl group of 1 to 4 carbons; ##STR46## where R 5 is an alkylene or alkylidene group of 2 to 6 carbons: R 6 and R 7 are respectively an alkyl group of 1 to 3 carbons, a phenyl or substituted phenyl group and n is an integer of from 1 to 200, and the copolymer containing the structure unit of the formula [II] is provided in an amount of from 0.1 to 50% by weight of the total weight of the copolymer.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-01-31 | 1997-08-02 | 1998-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-31 | 2001-08-02 | 2002-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-31 | 2005-08-02 | 2006-02-01 | $7700.00 | Window Closed / Lapsed |