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:
Feb. 01, 2011
Filed:
Jan. 12, 2009
Hiroshi Yamashita, Numazu, JP;
Masami Tomita, Numazu, JP;
Shigeru Emoto, Numazu, JP;
Tsunemi Sugiyama, Numazu, JP;
Hiroshi Yamashita, Numazu, JP;
Masami Tomita, Numazu, JP;
Shigeru Emoto, Numazu, JP;
Tsunemi Sugiyama, Numazu, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
A toner composition including toner particles, wherein the toner particles are prepared by a method in which toner constituents including at least a binder resin and a colorant are kneaded upon application of heat to prepare a toner constituent mixture; the toner constituent mixture is dissolved or swelled in an organic solvent capable of dissolving or swelling at least the binder resin to prepare an oil phase liquid; the oil phase liquid is emulsified in an aqueous liquid to prepare an emulsion; the emulsion is coagulated; and then the coagulated emulsion is dried to prepare the toner particles.