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:
May. 23, 2006
Filed:
Dec. 25, 1997
Frank Osan, Niedernhausen, DE;
Thomas Wehrmeister, Rüsselsheim, DE;
Horst-tore Land, Hofheim, DE;
Toshimi Nishioka, Suita, JP;
Junichi Fukuzawa, Yokohama, JP;
Toru Nakamura, Abiko, JP;
Takuya Hoga, Urawa, JP;
Masayuki Arai, Gyoda, JP;
Satoshi Arai, Tokyo, JP;
Frank Osan, Niedernhausen, DE;
Thomas Wehrmeister, Rüsselsheim, DE;
Horst-Tore Land, Hofheim, DE;
Toshimi Nishioka, Suita, JP;
Junichi Fukuzawa, Yokohama, JP;
Toru Nakamura, Abiko, JP;
Takuya Hoga, Urawa, JP;
Masayuki Arai, Gyoda, JP;
Satoshi Arai, Tokyo, JP;
Ticona GmbH, , DE;
Abstract
A toner for development of an electrostatically charged image, said toner comprising a binder resin, a colorant, a function imparting agent, and a charge control agent, wherein said binder resin at least contains a polyolefin resin having a cyclic structure, said polyolefin resin is composed of a resin or resin fraction having a number average molecular weight (Mn), as measured by GPC, of less than 7,500 and a resin or resin fraction having said number average molecular weight of 7,500 or more, and in said polyolefin resin having a cyclic structure, a resin or resin fraction having an intrinsic viscosity (i.v.) of 0.25 dl/g or more, and a number average molecular weight (Mn) of 7,500 or more and a weight average molecular weight (Mw) of 15,000 or more, as measured by the GPC method, is contained in a proportion of less than 50% by weight based on the entire binder resin.