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:
Sep. 28, 1999
Filed:
Jun. 23, 1998
Shinpei Takagi, Odawara, JP;
Yasuhiro Oya, Odawara, JP;
Etsuo Tominaga, Minamiashigara, JP;
Toyohumi Inoue, Hiratsuka, JP;
Tomohiro Takeda, Hadano, JP;
Masahiro Uchida, Minamiashigara, JP;
Haruhide Ishida, Hadano, JP;
Kouzou Ota, Odawara, JP;
Hirokazu Hamano, Kaisei, JP;
Yusaku Shibuya, Odawara, JP;
Jun Igarashi, Odawara, JP;
Atsuhiko Eguchi, Odawara, JP;
Yutaka Sugizaki, Minomiya, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
The toner for developing an electrostatic charge image comprises a colorant, a binding resin and a resin copolymer of aliphatic hydrocarbon and aromatic hydrocarbon having 9 or more of carbon atoms. Preferably, the toner further comprises a wax. The endothermic peak of the wax at DSC is preferably from 70 to 100.degree. C. The petroleum resin copolymer preferably has a ring and ball softening point of from 80 to 170.degree. C., and the binding resin is preferably a polyester resin. The weight ratio of the aromatic hydrocarbon monomer and the aliphatic hydrocarbon monomer of the petroleum resin copolymer is preferably from 99:1 to 50:50.