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US4405704A
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Triphenylmethane polymer, process for production thereof, and photoconductive compositions and members formed therefrom
Assignee: Fujifilm Holdings Corp
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Filing: 1982-05-28
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Granted: 1983-09-20
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Expires: 2002-05-28
Abstract
Abstract A triphenylmethane polymer, a process for production thereof, and photoconductive compositions and a member containing the polymer are described; the polymer is represented by formula (I) ##STR1## wherein R is an alkyl group, X is H or a methyl group, Z is an alkylene group or a p-xylylene group, Y is H, a methyl group, a methoxy group, a tertiary amino group, halogen, a nitro group or a cyano group, Q is H or a methyl group, and n represents a polymerization degree sufficient to obtain the intrinsic viscosity [η] of the polymer from 0.005 to 1.000.
Inventors
- 👤 Shu Watarai
- 👤 Kazuo Ishii
- 👤 Takeshi Takayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:59
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/026; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/075; G03G5/076; G03G5/0763
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
93 words
An electrophotographic photoconductive composition comprising a sensitizer and at least one triphenylmethane represented by formula (I) ##STR17## wherein R is an alkyl group, X is H or a methyl group, Z is an alkylene group having 1 to 5 carbon atoms or a p-xylylene group, Y is H, a methyl group, a methoxy group, a tertiary amino group, halogen, a nitro group or a cyano group, Q is H or a methyl group, and n represents a polymerization degree sufficient to obtain an intrinsic viscosity [η] of the polymer from 0.005 to 1.000.
Claim 2
Dependent Claim
93 words
An electrophotographic photoconductive composition comprising a sensitizer and at least one triphenylmethane represented by formula (I) ##STR17## wherein R is an alkyl group, X is H or a methyl group, Z is an alkylene group having 1 to 5 carbon atoms or a p-xylylene group, Y is H, a methyl group, a methoxy group, a tertiary amino group, halogen, a nitro group or a cyano group, Q is H or a methyl group, and n represents a polymerization degree sufficient to obtain an intrinsic viscosity [η] of the polymer from 0.005 to 1.000.
Claim 3
Dependent Claim
20 words
A photoconductive composition as in claim 1 wherein the alkylene group represented by Z contains 2 to 3 carbon atoms.
Claim 4
Dependent Claim
31 words
A photoconductive composition as in claim 1 wherein the sensitizer is present in an amount of from 0.0001 to 30% by weight based upon the total weight of the photoconductive composition.
Claim 5
Dependent Claim
32 words
An electrophotographic photoconductive composition as in claim 3 wherein the sensitizer is present in an amount of from 0.005 to 10% by wt. based on the total weight of the photoconductive composition.
Claim 6
Dependent Claim
13 words
A photoconductive composition as in claim 1 which further contains a film-forming binder.
Claim 7
Dependent Claim
114 words
A photoconductive light-sensitive member comprising an electrically conductive or electrically conductively-treated support and an electrophotographic photoconductive composition layer provided on the support, said composition comprising a sensitizer and at least one triphenylmethane polymer represented by formula (I) ##STR18## wherein R is an alkyl group, X is H or a methyl group, Z is an alkylene group having 1 to 5 carbon atoms or a p-xylylene group, Y is H, a methyl group, a methoxy group, a tertiary amino group, halogen, a nitro group or a cyano group, Q is H or a methyl group, and n represents a polymerization degree sufficient to obtain an intrinsic viscosity [η] of the polymer from 0.005 to 1.000.
Claim 8
Dependent Claim
114 words
A photoconductive light-sensitive member comprising an electrically conductive or electrically conductively-treated support and an electrophotographic photoconductive composition layer provided on the support, said composition comprising a sensitizer and at least one triphenylmethane polymer represented by formula (I) ##STR18## wherein R is an alkyl group, X is H or a methyl group, Z is an alkylene group having 1 to 5 carbon atoms or a p-xylylene group, Y is H, a methyl group, a methoxy group, a tertiary amino group, halogen, a nitro group or a cyano group, Q is H or a methyl group, and n represents a polymerization degree sufficient to obtain an intrinsic viscosity [η] of the polymer from 0.005 to 1.000.
Claim 9
Dependent Claim
21 words
A photoconductive light-sensitive member as in claim 6 wherein the alkylene group represented by Z contains 2 to 3 carbon atoms.
References Cited (Backward Citations)
US3542544A
Cited
US3542574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |