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:
Jul. 30, 2013
Filed:
Sep. 01, 2011
Seiji Kikushima, Osaka, JP;
Seiji Kikushima, Osaka, JP;
Kyocera Mita Corporation, , JP;
Abstract
To provide an electrostatic charge developing toner in which resin fine particles and inorganic fine particles are externally added to toner base particles, wherein the toner base particles include at least binder resin and colorant, the resin fine particles are monodispersed and fixed to surfaces of the toner base particles, and following equations are established: a=70 to 160 nm, b/a=0.2 to 0.5, and c/a=0.6 to 0.8, where 'a' represents an average of diameters (nm) of circular surfaces of contact between the fixed resin fine particles and toner base particle surfaces, 'b' represents an average of heights (nm) of the resin fine particles from the contact surfaces, and “c” represents an average diameter (nm) of the resin fine particle at the height b/2.