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Patent Searching and Data


Title:
WHITE DEVELOPER
Document Type and Number:
Japanese Patent JPH03242656
Kind Code:
A
Abstract:

PURPOSE: To prevent deterioration of whiteness even when a peeled coating resin attaches to an electrostatic latent image together with a white toner by using a carrier coated with a resin containing a white pigment.

CONSTITUTION: This developer is made of a mixture of the white toner for developing the electrostatic latent image to white, and the carrier coated on the surface with the coating resin containing the white pigment. The white toner can be prepared by mixing and kneading a styrene-acrylic type resin, titanium oxide, a quaternary ammonium salt, and the like, pulverizing and classifying them, and adding a hydrophobic silica powder, and the carrier can be prepared by coating the surfaces of ferrite particles with a solution of a fluororesin containing titanium oxide.


Inventors:
YAMAGAMI TOMOJI
TASAKA SHIGEAKI
INOUE KATSUSHI
Application Number:
JP4018790A
Publication Date:
October 29, 1991
Filing Date:
February 20, 1990
Export Citation:
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Assignee:
SHARP KK
International Classes:
G03G9/09; G03G9/08; (IPC1-7): G03G9/08; G03G9/09
Attorney, Agent or Firm:
Kenzo Hara