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:
Oct. 28, 2014
Filed:
Jan. 24, 2012
Masami Tujihiro, Osaka, JP;
Toshiki Takemori, Osaka, JP;
Masami Tujihiro, Osaka, JP;
Toshiki Takemori, Osaka, JP;
Kyocera Document Solutions Inc., Osaka-Shi, JP;
Abstract
Domains of a charge control resin are formed by dispersing a charge control resin containing a quaternary ammonium salt functional group-containing resin of a copolymer of an addition-polymerizable monomer having a quaternary ammonium salt functional group and a styrene and/or acrylic monomer into a polyester resin as binder resin, and the proportion of the number of domains of the charge control resin with a domain diameter of no less than 0.01 μm to less than 0.3 μm versus the number of domains of the charge control resin with a domain diameter of no less than 0.01 μm, which is measured by a predetermined method, is adjusted to no less than 98% by number.