EP0050464A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Photosensitive material for electrophotography
Assignee: Fujitsu Ltd
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Filing: 1981-10-13
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Granted: —
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Expires: 2001-10-13
Abstract
Abstract A photosensitive material for electrophotography having an improved photosensitivity is provided, which comprises copper phthalocyanine as a photoconductor, 2,5-bis(4'-diethylaminophenyl)-1,3,4-oxadiazole as a charge transport material and a binder resin in which said photoconductor and charge transport material are dispersed. The content of the binder resin is 50 to 70% by weight based on the total amount of the photosensitive material and the weight ratio of copper phthalocyanine to 2,5-bis(4'-diethylaminophenyl)-1,3,4-oxadiazole is in the range of from 2.5 to 6.5.
Inventors
- 👤 Teruo Yagishita
- 👤 Seiji Okada
- 👤 Toshiaki Narusawa
- 👤 Hirofumi Okuyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 09:30
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0627; G03G5/0633; G03G5/0664; G03G5/0696
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
81 words
A photosensitive material for electrophotography, which comprises copper phthalocyanine as a photoconductor, 2,5-bis(4'-dialkylaminophenyl)-1,3,4-oxadiazole as a charge transport material and a binder resin in which the photoconductor and charge transport material are dispersed, characterised in that the content of the binder resin is 50 to 70% by weight based on the total amount of the photosensitive material, the oxadiazole is 2,5- bis(4'-diethylaminophenyl)-l,3,4-oxadiazole and the weight ratio of copper phthalocyanine to 2,5 - bis(4'-diethylaminophenyl)-1,3,4-oxadiazole is in the range of from 2.5 to 6.5.
Claim 2
Dependent Claim
81 words
A photosensitive material for electrophotography, which comprises copper phthalocyanine as a photoconductor, 2,5-bis(4'-dialkylaminophenyl)-1,3,4-oxadiazole as a charge transport material and a binder resin in which the photoconductor and charge transport material are dispersed, characterised in that the content of the binder resin is 50 to 70% by weight based on the total amount of the photosensitive material, the oxadiazole is 2,5- bis(4'-diethylaminophenyl)-l,3,4-oxadiazole and the weight ratio of copper phthalocyanine to 2,5 - bis(4'-diethylaminophenyl)-1,3,4-oxadiazole is in the range of from 2.5 to 6.5.
Claim 3
Dependent Claim
27 words
A photosensitive material according to claim 1 characterised in that the weight ratio of copper phthalocyanine to 2,5-bis(4'-diethylaminophenyl)-1,3,4-oxazole is in the range of from 3.0 to 6.0.
Claim 4
Dependent Claim
25 words
A photosensitive material according to claim 1 or claim 2 characterised in that it is in the form of a coating on a conductive substrate.
Claim 5
Independent Claim
38 words
A method of exposing a photosensitive material to radiation characterised in that the material is a material according to any of claims 1 to 3 and the radiation is semiconductor laser oscillation or other near infra red radiation.
References Cited (Backward Citations)
No citation records indexed.
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