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:
Apr. 03, 2012
Filed:
Jun. 27, 2008
Yoshinori Yamamoto, Niimi, JP;
Hiroshi Onda, Yamatokoriyama, JP;
Saori Yamada, Nara, JP;
Yoshiaki Akazawa, Nara, JP;
Yoshinori Yamamoto, Niimi, JP;
Hiroshi Onda, Yamatokoriyama, JP;
Saori Yamada, Nara, JP;
Yoshiaki Akazawa, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In a toner at least containing a binder resin and a colorant, a value obtained by dividing a particle size Dby a particle size Dis 1.43 or more and 1.64 or less, wherein Dand Drespectively represent particle sizes at 50% and 84% of cumulative number counted from a large-size side in a cumulative number distribution. Further, in the toner, an average degree of circularity of toner particles having a volume average particle size of 1 μm or more and 4 μm or less is 0.940 or more and 0.960 or less. Further, in the toner, a content of toner particles having an average degree of circularity of 0.850 or less is 10% by number or less among the toner particles having a volume average particle size of 1 μm or more and 4 μm or less.