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:
May. 01, 2012
Filed:
Jan. 09, 2009
Yasuo Imura, Tenri, JP;
Hiroshi Onda, Yamatokoriyama, JP;
Yoritaka Tsubaki, Nara, JP;
Saori Yamada, Neyagawa, JP;
Yasuo Imura, Tenri, JP;
Hiroshi Onda, Yamatokoriyama, JP;
Yoritaka Tsubaki, Nara, JP;
Saori Yamada, Neyagawa, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A toner is so configured as to satisfy the following conditions: (b)/(a) is from 0.90 to 1.02, (a) is from 140 to 150 and the average value in the entire toner particles of a shape factor SF-2 of the toner particles is larger than 140, where (a) represents a shape factor SF-2 showing the degree of irregularity on the surface of toner particles having a particle size Dor less which is a particle size at which a cumulative volume from a large particle size side in particle size distribution by volume is 75%, and (b) represents a shape factor SF-2 of toner particles having a particle size Dor more which is a particle size at which a cumulative volume from a large particle size side in particle size distribution by volume is 25%.