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. 27, 2017
Filed:
Jan. 16, 2015
Kyocera Document Solutions Inc., Osaka, JP;
Noriaki Sakamoto, Osaka, JP;
Takatoshi Nozaki, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
A toner includes a plurality of toner particles each including a core and a shell layer residing on a surface of the core. The shell layer has a plurality of cavities each exposing the core. Each of the toner particles has a distribution of surface hardness, as measured by a scanning probe microscope in a state where no external additive adheres to the toner particle, satisfying that the surface hardness is at least 1.10 times a surface hardness Ss in at least 75% and no greater than 95% by area ratio of a surface of the toner particle, where Ss denotes the surface hardness at a location where the core is exposed through any of the cavities.