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US4263388A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrophotographic imaging device

Assignee: Xerox Corp
•
Filing: 1979-12-04
•
Granted: 1981-04-21
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Expires: 1999-12-04
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Abstract

Abstract An imaging member comprising a charge generation layer comprising a layer of photoconductive material and a contiguous charge transport layer of a charge transport material dissolved in a polymer of the following structure: ##STR1## wherein R', R", R'" and R"" are independently selected from the group consisting of alkyl and alkylene groups having from 1 to 12 carbon atoms, there being no more than 1 alkylene group present, x is from 4 to 5, y is from 0 to 1, n is a whole number and said polymer has a molecular weight ranging from about 1500 to about 120,000, said transport layer being substantially nonabsorbing in the spectral region at which the photoconductive layer generates and injects photogenerated holes, but is capable of supporting the injection of photogenerated holes from said photoconductive layer and transporting said holes through said charge transport layer.

Inventors

  • 👤 Richard L. Schank
  • 👤 John M. Pochan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 21:13
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/043; G03G5/0436; G03G5/05; G03G5/0528; G03G5/0557; G03G5/0578

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 142 words
An imaging member comprising a charge generation layer comprising a layer of photoconductive material and a contiguous charge transport layer of a charge transport material dissolved in a polymer of the following structure: ##STR5## wherein R', R", R'" and R"" are independently selected from the group consisting of alkyl and alkylene groups having from 1 to 12 carbon atoms, there being no more than 1 alkylene group present, x is from 4 to 5, y is from 0 to 1, n is a whole number and said polymer has a molecular weight ranging from about 1500 to about 120,000, said transport layer being substantially nonabsorbing in the spectral region at which the photoconductive layer generates and injects photogenerated holes, but is capable of supporting the injection of photogenerated holes from said photoconductive layer and transporting said holes through said charge transport layer.
Claim 2
Dependent Claim 142 words
An imaging member comprising a charge generation layer comprising a layer of photoconductive material and a contiguous charge transport layer of a charge transport material dissolved in a polymer of the following structure: ##STR5## wherein R', R", R'" and R"" are independently selected from the group consisting of alkyl and alkylene groups having from 1 to 12 carbon atoms, there being no more than 1 alkylene group present, x is from 4 to 5, y is from 0 to 1, n is a whole number and said polymer has a molecular weight ranging from about 1500 to about 120,000, said transport layer being substantially nonabsorbing in the spectral region at which the photoconductive layer generates and injects photogenerated holes, but is capable of supporting the injection of photogenerated holes from said photoconductive layer and transporting said holes through said charge transport layer.
Claim 3
Dependent Claim 29 words
The imaging member of claim 1 wherein said charge transport material is dissolved in said polymer in an amount of from about 25 to about 75 percent by weight.
Claim 4
Dependent Claim 20 words
The imaging member of claim 1 wherein R', R" and R'" are methyl groups and R"" is a vinyl group.
Claim 5
Dependent Claim 16 words
The imaging member of claim 1 wherein R', R", R'" and R"" are all methyl groups.
Claim 6
Dependent Claim 44 words
The member of claim 1 wherein the photoconductive material is selected from the group consisting of amorphous selenium, trigonal selenium, a selenium tellurium alloy, a selenium tellurium arsenic alloy, a selenium arsenic alloy and mixtures thereof and wherein the charge transport material is N,N'-diphenyl-N,N'-bis(3-methylphenyl)-[1,1'-biphenyl]-4,4'-diamine.

References Cited (Backward Citations)

US3121006A Cited
US3453106A Cited
US3850630A Cited
US3899328A Cited
US4115116A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-04-20 1984-10-20 1985-04-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-04-20 1988-10-20 1989-04-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-04-20 1992-10-20 1993-04-21 $7700.00 Window Closed / Lapsed

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