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:
Jun. 04, 2013
Filed:
Sep. 27, 2010
Junichi Awamura, Shizuoka, JP;
Hiroshi Yamashita, Shizuoka, JP;
Teruki Kusahara, Shizuoka, JP;
Tsuyoshi Sugimoto, Shizuoka, JP;
Tomomi Suzuki, Shizuoka, JP;
Junichi Awamura, Shizuoka, JP;
Hiroshi Yamashita, Shizuoka, JP;
Teruki Kusahara, Shizuoka, JP;
Tsuyoshi Sugimoto, Shizuoka, JP;
Tomomi Suzuki, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A method for producing a toner, containing: dispersing, in an aqueous medium, an oil phase which contains an organic solvent, and a binder resin component contained in the organic solvent, where the binder resin component contains a crystalline polyester resin and an amorphous polyester resin; and removing the organic solvent from the dispersion to obtain the toner, in which the dispersing further contains heating and dissolving the crystalline polyester and the amorphous polyester in the organic solvent to obtain a solution, cooling the solution so as to recrystallize the crystalline polyester resin, and mechanically pulverizing the recrystallized crystalline polyester resin so as to obtain a crystalline polyester dispersion.