Title:
ELECTROPHOTOGRAPHIC PHOTORECEPTOR
Document Type and Number:
Japanese Patent JP3835879
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain an electrophotographic photoreceptor having high sensitivity and low residual potential and less liable to film scraping at the time of repetitive use, by incorporating a specified azo pigment as an electric charge generating material into a photosensitive layer.
SOLUTION: This electrophotographic photoreceptor contains at least an azo pigment represented by formula I as an electric charge generating material in the photosensitive layer. In the IR adsorption spectrum of the electric charge generating material in the photosensitive layer, the carbonyl stretching vibration of anilide appears at >1,675cm-1 wave number. In the formula I, each of Cp1 and Cp2 is a residue of a coupler represented by formula II and each of R201 and R202 is H, a halogen, etc. In the formula II, R203 is H, an alkyl, etc., each of R204-R208 is H, nitro, etc., and Z is a group of atoms required to form an optionally substd. arom. carbon ring, etc.
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Inventors:
Tatsuya Niimi
Application Number:
JP6396397A
Publication Date:
October 18, 2006
Filing Date:
March 04, 1997
Export Citation:
Assignee:
株式会社リコー
International Classes:
G03G5/06; (IPC1-7): G03G5/06; G03G5/06
Domestic Patent References:
| JP4272962A | ||||
| JP829998A | ||||
| JP7309824A | ||||
| JP8101514A | ||||
| JP8101516A | ||||
| JP8248649A | ||||
| JP7325409A | ||||
| JP6220181A | ||||
| JP6295077A | ||||
| JP5135878A | ||||
| JP8198825A | ||||
| JP8254847A | ||||
| JP532905A |
Other References:
第36回応用物理学関連連合講演会、講演予稿集31-p-K-12(1990年)
「有機化学のためのスペクトル解析法」(株)化学同人 2001年3月1日発行
電子写真学会誌 第25巻 第3号(1986年)第10~15頁「フルオレノン系ビスアゾ顔料の電子写真感度」
「有機化学のためのスペクトル解析法」(株)化学同人 2001年3月1日発行
電子写真学会誌 第25巻 第3号(1986年)第10~15頁「フルオレノン系ビスアゾ顔料の電子写真感度」
Attorney, Agent or Firm:
Hidehiko Takei