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. 21, 2009
Filed:
Aug. 01, 2006
Hiroshi Kaiho, Matsumoto, JP;
Satoru Miura, Matsumoto, JP;
Hiroshi Kaiho, Matsumoto, JP;
Satoru Miura, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A method for producing a liquid developer comprising an insulation liquid and toner particles dispersed in the insulation liquid is provided. The method comprising the steps of: a wet grinding step for grinding a toner material mainly composed of a resin material in a first liquid which contains as its main component a fatty acid monoester to obtain a ground material dispersed liquid; and a mixing step for mixing the ground material dispersed liquid and a second liquid which contains as its main component a fatty acid triglyceride, wherein the first and second liquids constitute the insulation liquid, and the ground resin material dispersed in the insulation liquid constitutes the toner particles. According to the producing method, it is possible to produce a liquid developer in which toner particles having a sufficiently small size are stably dispersed with high production efficiency. Further, a liquid developer produced by the method and an image forming apparatus are also provided.