Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ELECTRIFYING MEMBER
Document Type and Number:
Japanese Patent JPH08101563
Kind Code:
A
Abstract:

PURPOSE: To suppress the sticking of a toner, etc., to the surface of the semiconductive elastic layer of an electrifying member and to improve the durability of the member by forming a surface layer of a resin consisting essentially of polyester polyol and polyisocyanate as polymers on the elastic layer.

CONSTITUTION: This electrifying member is a roll-shaped member and consists of an electrically conductive substrate 101 having the shape of a core metal, a semiconductive elastic layer 102 disposed around the substrate 101 and a surface layer 103 formed on the peripheral surface of the elastic layer 102. The endless belt-shaped elastic layer 102 is made of epichlorohydrin rubber and the surface layer 103 is made of a hardened film consisting of polyester polyol and a relatively excess of polyisocyanate. The polyester polyol is a polyrmer obtd. by bringing polycarboxylic acid and polyol into a condensation reaction and having ester bonds and hydroxyl groups in each molecule and forms a coating film having superior nonstickiness and flexibility by urethane crosslinking with polyisocyanate.


Inventors:
NOJIMA KAZUO
Application Number:
JP23793894A
Publication Date:
April 16, 1996
Filing Date:
September 30, 1994
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
RICOH KK
International Classes:
G03G15/02; C08L19/00; G03G15/16; (IPC1-7): G03G15/02; G03G15/16
Domestic Patent References:
JPH0616301A1994-01-25
JPH02310566A1990-12-26
JPH06248174A1994-09-06
Attorney, Agent or Firm:
Hiroaki Sakai