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:
Dec. 31, 1996
Filed:
Jul. 06, 1995
Applicant:
Inventors:
Assignee:
Mitsubishi Chemical Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430106 ; 430137 ;
Abstract
Disclosed is a method for producing a toner for developing electrostatic images, which comprises the steps of kneading a mixture of raw materials comprising at least a resin and a colorant, cooling the kneaded mixture, pulverizing the cooled mixture, classifying the pulverized mixture, and feeding a fine powder separated by the classification step to a melt of the mixture of raw materials in the middle of the kneading step. The toner has improved fixability, durability and storage stability, with which stable and high-quality images are obtained even by continuous copying operation.