Mitsubishi Kasei Corporation

Hirofumi Oda

Yukihiro Sato

Shigenori Otsuka

Hiromi Horiuchi

Yasuo Kamoshita

Katsuo Koizumi

Heihachi Yushina

Toshiyuki Sueyoshi

Syuuichi Maeda

A carrier for developing electrostatic latent images is disclosed, which comprises a core material at least a part of which is coated with a resin containing a copolymer comprised of vinylidene chloride and at least one monomer having an unsaturated double bond and being copolymerizable with vinylidene chloride, wherein the copolymer is comprised of (a) from 70 to 30 mol % of vinylidene chloride, (b) from 20 to 60 mol % of acrylonitrile and/or an acrylonitrile derivative, and (c) from 0 to 40 mol % of a monomer having an unsaturated double bond and being copolymerizable with components (a) and (b). An electrophotographic developer containing the carrier and an electrophotographic developing process using the developer are also disclosed.

Carrier for developing electrostatic latent images, developer, and

An electrophotographic yellow toner comprising binder resins having dispersed therein acetoacetanilide type monoazo pigments in its amorphous phase. The toner is excellent in transparency and spectral reflection characteristics. The toner is prepared by a process comprising a step of subjecting a colorant containing acetoacetanilide monoazo pigments and binder resins to heat treatment at a temperature higher than the softening point of the binder resin by at least 40.degree. C.

Electrophotographic yellow toner and process for producing the same

Growing community of inventors

Kanagawa, Japan

Hirofumi Oda