Title:
無端管状半導電性芳香族ポリイミドフイルムとその製造方法
Document Type and Number:
Japanese Patent JP4406782
Kind Code:
B2
Abstract:
The present invention provides a seamless tubular electrically-semiconductive film excellent in heat resistance, chemical resistance and mechanical property with excellent electrical resistance properties being applied thereto. The seamless tubular electrically-semiconductive film comprises an aromatic polyimide and an electrically-conductive carbon black having a volatile content of 10-25% which consists mainly of volatile acidic ingredients having a pH of not more than 4. Combination of the polyimide having a Tg of 210-350 DEG C and a surface oxidation-treated carbon black is preferred since the combination enables to easily obtain the film wherein a surface resistivity/volume resistivity ratio is not more than two digits, and variation in the surface resistivity caused by an applied voltage for charging is not more than half a digit. The film is produced, for example, by centrifugal casting. The film is remarkably advantageous as an intermediate transfer belt in a color copying machine.
Inventors:
Junya Kin
Application Number:
JP22869399A
Publication Date:
February 03, 2010
Filing Date:
August 12, 1999
Export Citation:
Assignee:
GUNZE LIMITED
Fuji Xerox Co., Ltd
Fuji Xerox Co., Ltd
International Classes:
B29C41/04; C08J5/18; B29D7/01; C08K3/04; C08L79/08; G03G15/16; B29K79/00
Domestic Patent References:
| JP2000309712A | ||||
| JP8152790A | ||||
| JP10031371A | ||||
| JP8176319A | ||||
| JP2000281902A | ||||
| JP11231614A | ||||
| JP63311263A | ||||
| JP10148997A | ||||
| JP10196638A |
Other References:
カーボンブラック協会編,カーボンブラック便覧,日本,株式会社図書出版社,1971年11月25日,初版,第430-431頁
バイロマックス,日本,東洋紡績株式会社,第13頁
バイロマックス,日本,東洋紡績株式会社,第13頁
Attorney, Agent or Firm:
Eiji Saegusa
Kakehi Yuro
Masahito Hayashi
Kakehi Yuro
Masahito Hayashi