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:
Apr. 08, 1997
Filed:
Jul. 12, 1995
Yuzo Horikoshi, Kawasaki, JP;
Norio Sawatari, Kawasaki, JP;
Takeshi Ogino, Kawasaki, JP;
Hiroaki Naito, Kato-gun, JP;
Makoto Koshi, Kawasaki, JP;
Kazuhiko Kido, Kawasaki, JP;
Takashi Yamamoto, Kawasaki, JP;
Eiji Sakurai, Kawasaki, JP;
Yoshimichi Katagiri, Kawasaki, JP;
Masatoshi Maruyama, Tokyo, JP;
Hidenori Nitta, Tokyo, JP;
Sonoo Matsuoka, Tokyo, JP;
Fujitsu Limited, Kawasaki, JP;
Nippon Carbide Industries, Co., Inc., Tokyo, JP;
Abstract
A toner binder is disclosed which comprises a polyester resin in which an aliphatic hydrocarbon chain terminated with an ester and/or an ether bond to the aliphatic group contains a constituent element consisting of ethylene in an amount of from 1 to 5 wt % based on the total weight of the resin. Further disclosed is a toner binder using both of a crosslinked polyester having a peak molecular weight of 10,000 or less and a linear polyester having a peak molecular weight of 8,000 or more as binder resins, the peak molecular weight of the linear polyester being greater than the peak molecular weight of the crosslinked polyester.