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:
Aug. 03, 2010
Filed:
Jun. 22, 2005
Hisashi Kurokawa, Tokyo, JP;
Hisashi Kurokawa, Tokyo, JP;
Zeon Corporation, Tokyo, JP;
Abstract
In a process for producing a polymerized toner, comprising Step 1 of preparing a polymerizable monomer composition and Step 2 of polymerizing the polymerizable monomer composition with a polymerization initiator to form colored polymer particles, Step 1 comprises Step A of finely dispersing the colorant in a liquid mixture containing the polymerizable monomer and the colorant, and further Step A comprises Step A1 of feeding a liquid mixture containing a polymerizable monomer and a colorant, which has a volume average particle diameter of 20 μm or larger and/or contains particles having a particle diameter of 51 μm or larger in a volume percentage of 20% or higher, to a dispersing machine of the type that mechanical shearing force is applied by rotation of an agitating blade to preliminarily disperse the colorant, and Step A2 of feeding the liquid mixture containing the colorant preliminarily dispersed in Step A1 to a media type dispersing machine equipped with a media-separating screen to more finely disperse the colorant in the liquid mixture.