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:
Sep. 27, 2016
Filed:
Jan. 24, 2014
Zeon Corporation, Tokyo, JP;
ZEON CORPORATION, Tokyo, JP;
Abstract
Disclosed is a method for producing a polymerized toner, wherein the method comprises: a suspension step of obtaining a suspension in which droplets of a first-stage polymerizable monomer composition containing at least a first-stage polymerizable monomer and a colorant are dispersed, by suspending the first-stage polymerizable monomer composition in an aqueous dispersion medium containing a dispersion stabilizer; a first-stage polymerization step of carrying out suspension polymerization by using the suspension, in the presence of a polymerization initiator; and a second-stage polymerization step of carrying out suspension polymerization by further adding a second-stage polymerizable monomer satisfying the following formula (1), when a polymerization conversion rate in the first-stage polymerization step becomes 20 to 80%:.  Formula (1):