The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 1996
Filed:
Jul. 18, 1994
Masanori Ichimura, Kanagawa, JP;
Hiroshi Takayama, Kanagawa, JP;
Michio Take, Kanagawa, JP;
Hideyuki Akagi, Kanagawa, JP;
Takashi Imai, Kanagawa, JP;
Satoshi Inoue, Kanagawa, JP;
Yasuo Yamamoto, Kanagawa, JP;
Yutaka Sugizaki, Kanagawa, JP;
Koji Fukushima, Kanagawa, JP;
Masayuki Takei, Kanagawa, JP;
Masaru Miura, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A color toner providing a toner image excellent in brightness, clearness and graininess and a process for producing the same are disclosed, wherein a proportion of dispersed pigment particles having a circle-equivalent diameter of 0.3 .mu.m or greater does not exceed 0.1% of the total number of said dispersed pigment particles. The process comprises kneading a water-containing pigment paste and a binder resin at a temperature of 100.degree. C. or higher under pressure in a heat and pressure kneader to remove a water content to obtain a pigment dispersion, melt-kneading the resulting pigment dispersion together with a binder resin, and grinding the mixture.