Title:
CONDUCTIVE ROLL
Document Type and Number:
Japanese Patent JP3218671
Kind Code:
B2
Abstract:
PURPOSE: To easily control flying of a toner from a developing roll and to obtain sufficient picture image density by using a conductive coating comps. set up to make an electric resistance of the binder resin and dispersed material at under a specified value to form a conductive high molecular layer on a surrounding binder resin of a conductive roll shaft by allowing to contain the dispersed material having an electric resistance a specified value or below in binder resin.
CONSTITUTION: On surrounding surface of metallic sleeve 12, the conductive high molecular layer 13 is formed. The layer 13 is formed with an electric conductive coating compn. upon setting up as a conductive powder and a dispersed material are contained dispersedly in the binder resin, and a electric resistance of the dispersed material is ≤107Ω.cm and electric resistance of the compn. of the binder resin and dispersed material is ≤1010Ω.cm.
Inventors:
Akira Ishihara
Norio Kambara
Jiro Iwashiro
Akihiko Kaji
Norio Kambara
Jiro Iwashiro
Akihiko Kaji
Application Number:
JP7634692A
Publication Date:
October 15, 2001
Filing Date:
February 25, 1992
Export Citation:
Assignee:
Tokai Rubber Industry Co., Ltd.
International Classes:
G03G5/14; F16C13/00; G03G15/08; (IPC1-7): G03G15/08
Domestic Patent References:
| JP3284771A | ||||
| JP2198470A | ||||
| JP320763A |
Attorney, Agent or Firm:
Yukihiko Saitou