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. 05, 2017
Filed:
Sep. 14, 2016
Kyocera Document Solutions Inc., Osaka, JP;
Masashi Tamagaki, Osaka, JP;
Tomoyuki Ogawa, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
A shell layer of a toner particle includes first resin particles containing no charge control agent and second resin particles containing a charge control agent. A number average particle diameter of the first resin particles is at least 30 nm and no greater than 60 nm, and a number average particle diameter of the second resin particles is at least 30 nm and no greater than 60 nm. A shell coverage is at least 60% and no greater than 80%. A shell chargeable ratio is at least 0.10 and no greater than 0.20. A roughness of surface regions of toner particles in which no external additive is present is at least 10 nm and no greater than 15 nm.