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:
Dec. 10, 2013
Filed:
Jun. 20, 2011
Hiroshi Yamashita, Shizuoka, JP;
Yuichi Shirasu, Shizuoka, JP;
Masaki Watanabe, Shizuoka, JP;
Tomoki Murayama, Miyagi, JP;
Hiroshi Yamashita, Shizuoka, JP;
Yuichi Shirasu, Shizuoka, JP;
Masaki Watanabe, Shizuoka, JP;
Tomoki Murayama, Miyagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A method for producing an electrophotographic toner including forming a toner base particle by emulsifying or dispersing a solution or dispersion of a toner material comprising a colorant, and any one of a binder resin and a binder resin precursor in an aqueous medium, and adding crystalline organic fine particles having an acid value of 20 mgKOH/g to 80 mgKOH/g into the aqueous medium, before, during or after the forming so as to attach the crystalline organic fine particles onto a surface of the toner base particle.