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:
Mar. 22, 1994
Filed:
May. 04, 1992
Hideyuki Akagi, Minami-ashigara, JP;
Susumu Saito, Minami-ashigara, JP;
Masaru Miura, Minami-ashigara, JP;
Takashi Imai, Minami-ashigara, JP;
Masayuki Takei, Minami-ashigara, JP;
Masanori Ichimura, Minami-ashigara, JP;
Michio Take, Minami-ashigara, JP;
Satoshi Inoue, Minami-ashigara, JP;
Yasuo Yamamoto, Minami-ashigara, JP;
Toshiaki Murofushi, Minami-ashigara, JP;
Hiroshi Nakazawa, Minami-ashigara, JP;
Koji Fukushima, Minami-ashigara, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A toner for developing an electrostatic charge image is disclosed, which is formed by adding and mixing an external additive with toner particles having an average particle size of not larger than 9 .mu.m and comprising at least a colorant and a binder resin, wherein the external additive is fine particles having a particle size of 20 to 80 nm. There is also disclosed a process for preparing the toner which comprises adding external additives to the toner particles and mixing them, wherein the addition and mixing of said external additive are carried out under specific conditions.