Electrophotographic toner

Details Electrophotographic toner Electrophotographic toner

G - Physics

03

G

96/53

G03G 9/087 (2006.01)

Patent

CA 1281931

ABSTRACT An electrophotographic toner, which can exhibit good fixation in high-speed copying and is not affected by an environment such as high humidity, is provided by containing, as a principal component thereof, a resin blend composed of (a) 40 - 90 wt.% of a vinyl copolymer (I) formed of 70 - 97 wt.% of an aromatic vinyl monomer, 3 - 30 wt.% of an alkyl fumarate which is a C1-8 monoalkyl or dialkyl ester and 0 - 5 wt.% of an acid monomer and having a number average molecular weight of 2,000 - 15,000 and (b) 10 - 60 wt.% of a vinyl polymer (II) having a number average molecular weight of 20,000 - 500,000.

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