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:
May. 19, 2015
Filed:
Dec. 26, 2013
Kao Corporation, Chuo-ku, JP;
Kao Corporation, Chuo-ku, JP;
Abstract
A method for producing a liquid developer containing toner particles containing a resin containing a polyester and a pigment, and an insulating liquid, wherein the toner particles are dispersed in the insulating liquid, including: step 1: melt-kneading the resin and the pigment, and pulverizing a melt-kneaded mixture to provide toner particles; step 2: dispersing the toner particles obtained in the step 1 in the insulating liquid in the presence of a basic dispersant to provide a dispersion of toner particles; and step 3: wet-milling the dispersion of toner particles obtained in the step 2 to provide a liquid developer, wherein the basic dispersant is an amide compound obtained by a reaction between a polyethyleneimine and a polyester (D) obtained by self-condensation of 12-hydroxystearic acid. The liquid developer obtained by the method of the present invention can be suitably used in development of latent images formed in, for example, an electrophotographic method, an electrostatic recording method, an electrostatic printing method, or the like.