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:
Jul. 06, 1993
Filed:
Dec. 19, 1991
Applicant:
Inventors:
Heihachi Yushina, Tokyo, JP;
Yukihiro Sato, Kanagawa, JP;
Yasuo Kamoshita, Kanagawa, JP;
Hirofumi Oda, Kanagawa, JP;
Assignee:
Mitsubishi Kasei Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430106 ; 430137 ;
Abstract
An electrophotographic yellow toner comprising binder resins having dispersed therein acetoacetanilide type monoazo pigments in its amorphous phase. The toner is excellent in transparency and spectral reflection characteristics. The toner is prepared by a process comprising a step of subjecting a colorant containing acetoacetanilide monoazo pigments and binder resins to heat treatment at a temperature higher than the softening point of the binder resin by at least 40.degree. C.