US5087544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perylene electrophotosensitive material with m-phenylenediamine
Assignee: Kyocera Mita Industrial Co Ltd
•
Filing: 1990-03-26
•
Granted: 1992-02-11
•
Expires: 2010-03-26
Abstract
Abstract The present invention provides an electrophotosensitive material comprising a conductive substrate, and a photosensitive layer provided on the conductive substrate and containing a m-phenylenediamine compound represented by the general formula [I]: ##STR1## (wherein R 1 , R 2 , R 3 , R 4 and R are the same as defined before). The present electrophotosensitive material has high sensitivity and is easy to be manufactured.
Inventors
- 👤 Nariaki Muto
- 👤 Mikio Kakui
- 👤 Keisuke Sumida
- 👤 Toru Nakazawa
- 👤 Kazuo Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:07
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0612; G03G5/0614; G03G5/06142; G03G5/06144
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
127 words
An electrophotosensitive material comprising a conductive substrate and a single layer type photosensitive layer provided on said conductive substrate, said photosensitive layer containing a m-phenylenediamine compound as charge-transferring material and a perylene compound as charge-generating material, said m-phenylenediamine compound represented by formula ##STR4## wherein R 1 , R 2 , R 3 , R 4 and R are the same as one another, or are different from one another, and represent a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom, provided that, when one of R 1 and R 4 is the hydrogen atom, the other should not be the hydrogen atom, and when one of R 2 and R 3 is the hydrogen atom, the other should not be the hydrogen atom.
Claim 2
Dependent Claim
127 words
An electrophotosensitive material comprising a conductive substrate and a single layer type photosensitive layer provided on said conductive substrate, said photosensitive layer containing a m-phenylenediamine compound as charge-transferring material and a perylene compound as charge-generating material, said m-phenylenediamine compound represented by formula ##STR4## wherein R 1 , R 2 , R 3 , R 4 and R are the same as one another, or are different from one another, and represent a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom, provided that, when one of R 1 and R 4 is the hydrogen atom, the other should not be the hydrogen atom, and when one of R 2 and R 3 is the hydrogen atom, the other should not be the hydrogen atom.
Claim 3
Dependent Claim
19 words
An electrophotosensitive material according to claim 1, wherein the m-phenylenediamine compound represented by the general formula [I] is N,N'-di(3-toryl)-N,N'-di(4-toryl)-1,3-phenylenediamine.
Claim 4
Dependent Claim
38 words
An electrophotosensitive material according to claim 1, wherein the photosensitive layer contains 20 to 80 parts by weight of the m-phenylenediamine compound represented by the general formula [I] with respect to 100 parts by weight of binding resin.
Claim 5
Dependent Claim
13 words
The electrophotosensitive material according to claim 1, wherein said m-phenylenediamine compound is N,N'-di)3-toryl)-N,N'-di(4-toryl)-1,3-phenylenediamine.
References Cited (Backward Citations)
US3615404A
Cited
JPH0237356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |