US4490452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xerographic photoconductors with cross-linked epoxy binder
Assignee: IBM Information Products Corp
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Filing: 1983-12-09
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Granted: 1984-12-25
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Expires: 2003-12-09
Abstract
Abstract An aggregate-type xerographic photoconductor wherein primary or secondary amines are used not only to solubilize the photoconductor's light sensitive organic dye, but also to act as a cross-linker for an epoxy binder of the bisphenol class. A combined CTL/CGL layer is described, having both hole transport and charge generating dye molecules. The resulting layer is useful either as single-layer, bimodal photoconductor, or as the CGL of a two-layer photoconductor.
Inventors
- 👤 Robert B. Champ
- 👤 Yau T. Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:24
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0503; G03G5/051; G03G5/0514; G03G5/043; G03G5/047; G03G5/0521; G03G5/06; G03G5/0601; G03G5/0609; G03G5/0611; G03G5/0612; G03G5/0616; G03G5/0622; G03G5/0624; G03G5/0627; G03G5/0631; G03G5/0664; G03G5/0675; G03G5/0679
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
37 words
A combined charge generating and charge transporting photosensitive layer, comprising: a cross-linked epoxy resin binder; at least one transport molecule; and a charge generating molecule solubilized in an amine, which amine also acts to cross-link said epoxy.
Claim 2
Dependent Claim
37 words
A combined charge generating and charge transporting photosensitive layer, comprising: a cross-linked epoxy resin binder; at least one transport molecule; and a charge generating molecule solubilized in an amine, which amine also acts to cross-link said epoxy.
Claim 3
Dependent Claim
22 words
The photosensitive layer of claim 1 wherein said epoxy is a bisphenol A epoxy, and wherein said amine is a primary amine.
Claim 4
Dependent Claim
23 words
The photosensitive layer of claim 2 wherein said charge generating molecule is hydroxysquarylium or Chloro Diane Blue, and said primary amine is ethylenediamine.
Claim 5
Dependent Claim
15 words
The photosensitive layer of claim 3 wherein said hole transport molecule is diphenylhydrazone or 1-phenyl-3[p-diethylaminostyryl]-5-[p-diethylamino-phenyl]-pyrazoline.
Claim 6
Dependent Claim
11 words
The photosensitive layer of claim 4 including both diphenylhydrazone and 1-phenyl-3[p-diethylaminostyryl]-5-[p-diethyl-aminophenyl]-pyrazoline
Claim 7
Dependent Claim
12 words
The photosensitive layer of claim 5 including both hydroxysquarylium Chloro Diane Blue.
Claim 8
Dependent Claim
22 words
The photosensitive layer of claim 1 wherein said epoxy is a bisphenol A epoxy, and wherein said amine is a secondary amine.
Claim 9
Dependent Claim
12 words
The photosensitive layer of claim 7 wherein said secondary amine is piperidine.
Claim 10
Dependent Claim
16 words
The photosensitive layer of claim 1 wherein said amine is ethylenediamine, piperidine, diethylene triamine or pyrrolidine.
Claim 11
Dependent Claim
30 words
An electrophotographic photoconductor whose charge generation layer comprises the layer of claim 1, and wherein a charge transfer layer is coated on the surface of the layer of claim 1.
Claim 12
Dependent Claim
30 words
An electrophotographic photoconductor whose charge generation layer comprises the layer of claim 3, and wherein a charge transfer layer is coated on the surface of the layer of claim 3.
References Cited (Backward Citations)
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US4123270A
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EP0014061A1
Cited
JPS55157748A
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US4330608A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |