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. 12, 2017
Filed:
Aug. 27, 2015
Konica Minolta Inc., Tokyo, JP;
Mikio Kouyama, Kunitachi, JP;
Hiroyuki Fukuda, Sanda, JP;
Shiro Hirano, Hachioji, JP;
Asao Matsushima, Hino, JP;
KONICA MINOLTA, INC., Tokyo, JP;
Abstract
A method of manufacturing an electrostatic latent image developing toner made of a binding resin made of an amorphous resin and a crystalline resin, and toner particles containing a releasing agent and a coloring agent, the method includes: adding a monomer for forming the amorphous resin, in an aqueous medium, under presence of the fine particles containing the crystalline resin, and performing polymerization to obtain coated resin fine particles that are fine particles containing the crystalline resin, the fine particles being coated with the amorphous resin; and flocculating and fusing at least fine particles containing the amorphous resin, the coated resin fine particles, and fine particles containing the coloring agent, in an aqueous medium, under presence of a flocculating agent, to obtain the toner particles, wherein a surfactant having concentration of one to five times critical micellar concentration is added to the aqueous medium in the polymerization.