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. 15, 2021
Filed:
Feb. 21, 2018
Shohta Kobayashi, Shizuoka, JP;
Satoshi Ogawa, Nara, JP;
Yoshitaka Sekiguchi, Shizuoka, JP;
Masayuki Ishii, Shizuoka, JP;
Naoko Kitada, Shizuoka, JP;
Shohta Kobayashi, Shizuoka, JP;
Satoshi Ogawa, Nara, JP;
Yoshitaka Sekiguchi, Shizuoka, JP;
Masayuki Ishii, Shizuoka, JP;
Naoko Kitada, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Provided is a toner including a binder resin, a release agent, and a charge-controlling agent, wherein the toner includes toner particles having particle diameters of 3 micrometers or smaller, among the toner particles having particle diameters of 3 micrometers or smaller, a proportion of the toner particles having an average circularity of 0.70 or greater but 0.85 or less in all of the toner particles is 10% by number or greater but less than 20% by number and a proportion of the toner particles having an average circularity of less than 0.70 in all of the toner particles is 10% by number or less.