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:
Aug. 07, 2007
Filed:
Jul. 29, 1996
Toru Nakamura, Abiko, JP;
Toshimi Nishioka, Suita, JP;
Takuya Hoga, Urawa, JP;
Nobuyuki Kurokawa, Tokyo, JP;
Junichi Fukuzawa, Yokohama, JP;
Horst-tore Land, Hofheim, DE;
Fredy Helmer-metzmann, Essenheim, DE;
Toru Nakamura, Abiko, JP;
Toshimi Nishioka, Suita, JP;
Takuya Hoga, Urawa, JP;
Nobuyuki Kurokawa, Tokyo, JP;
Junichi Fukuzawa, Yokohama, JP;
Horst-Tore Land, Hofheim, DE;
Fredy Helmer-Metzmann, Essenheim, DE;
Ticona GmbH, , DE;
Abstract
This invention relates to a toner for developing an electrostatically charged image of a heat roller type copier or printer, the toner consisting essentially of a binder resin, a colorant and a charge control agent, in which the binder resin at least includes a polyolefin resin having a cyclic structure, and a polyolefin resin of a cyclic structure having an intrinsic viscosity (i.v.) of 0.25 dl/g or more, a heat distortion temperature (HDT) by DIN53461-B of 70° C. or higher, and a number average molecular weight of 7,500 or more and a weight average molecular weight of 15,000 or more, as measured by GPC, is contained in a proportion of less than 50% by weight based on the entire binder resin. The toner for developing an electrostatically charged image according to the invention is excellent in fixability, light transmission, and anti-toner spent properties, giving a sharp, high quality image, can be applied to any of a dry one-component magnetic toner, a dry one-component nonmagnetic toner, a dry two-component toner and a liquid toner, and exhibits marked effects particularly when used in a color toner.