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. 27, 2023
Filed:
Oct. 22, 2020
Applicant:
Ricoh Company, Ltd., Tokyo, JP;
Inventors:
Toshihiko Sugiyama, Shizuoka, JP;
Minoru Masuda, Shizuoka, JP;
Yuka Mizoguchi, Shizuoka, JP;
Hideki Sugiura, Shizuoka, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 9/08 (2006.01); G03G 9/087 (2006.01); G03G 15/08 (2006.01);
U.S. Cl.
CPC ...
G03G 9/0821 (2013.01); G03G 9/0819 (2013.01); G03G 9/0825 (2013.01); G03G 9/08755 (2013.01); G03G 15/0865 (2013.01);
Abstract
A toner for electrostatic charge image development, wherein a spin-spin relaxation time of the toner at 90° C. is 0.30 msec or more but 1.50 msec or less, and a spin-spin relaxation time of the toner at 50° C. is 0.0185 msec or more but 0.0300 msec or less, the spin-spin relaxation time of the toner at 90° C. and the spin-spin relaxation time of the toner at 50° C. being obtained by Hahn echo method of pulse NMR analysis.