US4133684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic material with intermediate layer
Assignee: Konica Minolta Inc
•
Filing: 1977-03-21
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Granted: 1979-01-09
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Expires: 1997-03-21
Abstract
Abstract An electrophotographic photosensitive material comprising a substrate, a photoconductive photosensitive layer, and an intermediate layer interposed between the substrate and the photosensitive layer, said intermediate layer containing a compound which has at least one of hydroxyl and amino groups together with a quaternary ammonium group. The substrate includes a metallic support body and a conductive protection layer applied to form a surface layer on said metallic support body and made of a resin dispersed with carbon particles.
Inventors
- 👤 Noriyoshi Tarumi
- 👤 Akihiko Tamura
- 👤 Masakazu Kokiso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:35
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/142; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
An electrophotographic photosensitive material comprising: (a) a substrate; (b) a protective conductive layer disposed upon said substrate, said layer being comprised of a resin having carbon particles dispersed therein; (c) an intermediate layer disposed upon said protective conductive layer, which intermediate layer includes the cross-linked product of an epoxy resin having at least two epoxy groups and a cation conductive agent selected from the group consisting of the compounds represented by the following structural formulae: ##STR5## wherein n 1 , n 2 and n 3 show, respectively, the polymerization mol % of each of the component monomers; and (d) a photosensitive layer disposed upon said intermediate layer.
Claim 2
Dependent Claim
107 words
An electrophotographic photosensitive material comprising: (a) a substrate; (b) a protective conductive layer disposed upon said substrate, said layer being comprised of a resin having carbon particles dispersed therein; (c) an intermediate layer disposed upon said protective conductive layer, which intermediate layer includes the cross-linked product of an epoxy resin having at least two epoxy groups and a cation conductive agent selected from the group consisting of the compounds represented by the following structural formulae: ##STR5## wherein n 1 , n 2 and n 3 show, respectively, the polymerization mol % of each of the component monomers; and (d) a photosensitive layer disposed upon said intermediate layer.
Claim 3
Dependent Claim
17 words
An electrophotographic photosensitive material according to claim 1, wherein said intermediate layer further contains an isocyanate compound.
Claim 4
Dependent Claim
22 words
An electrophotographic photosensitive material according to claim 1, wherein the epoxy resin has a molecular weight of about 300 to about 200,000.
Claim 5
Dependent Claim
20 words
An electrophotographic photosensitive material according to claim 1, wherein the resin of the protective conductive layer is an epoxy resin.
Claim 6
Dependent Claim
29 words
An electrophotographic photosensitive material according to claim 1, wherein the protective conductive layer contains 10 to 80% by weight of carbon particles based on the weight of the resin.
Claim 7
Dependent Claim
15 words
An electrophotographic photosensitive material according to claim 1, wherein the substrate is a metal sheet.
References Cited (Backward Citations)
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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) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |