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:
Jan. 06, 2026
Filed:
Jan. 25, 2023
Applicants:
Ayaka Mori, Shizuoka, JP;
Yoshitaka Yamauchi, Shizuoka, JP;
Kohtaroh Ogino, Shizuoka, JP;
Masayuki Ishii, Shizuoka, JP;
Inventors:
Ayaka Mori, Shizuoka, JP;
Yoshitaka Yamauchi, Shizuoka, JP;
Kohtaroh Ogino, Shizuoka, JP;
Masayuki Ishii, Shizuoka, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/087 (2006.01); G03G 9/097 (2006.01);
U.S. Cl.
CPC ...
G03G 9/08755 (2013.01); G03G 9/08706 (2013.01); G03G 9/09733 (2013.01);
Abstract
A toner includes: a crystalline polyester resin; and a partially hydrogenated petroleum resin. A hydrogenation rate of the partially hydrogenated petroleum resin is from 30% through 70%. An amount of the partially hydrogenated petroleum resin relative to the toner is from 1% by mass through 15% by mass.