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:
Jun. 19, 1990
Filed:
Dec. 07, 1988
Applicant:
Inventors:
Yoshio Takizawa, Tokyo, JP;
Jiro Takahashi, Tokyo, JP;
Akitoshi Matsubara, Tokyo, JP;
Satoru Ikeuchi, Tokyo, JP;
Assignee:
Konica Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430110 ; 430109 ;
Abstract
A toner for developing an electrostatic image is disclosed, which is not likely cause fogs, toner flying, and solid-black non-uniformity when used for a large number of cpying cycles in a high temperature, high humidity. The toner comprises a polyester resin containing a trivalent or higher monomer as a polymerized component and an antioxidant. As the antioxidant, a compound having a hidered phenolic group is preferably used as the antioxidant.