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. 11, 2017
Filed:
Jul. 14, 2014
Applicants:
Hideki Sugiura, Shizuoka, JP;
Yuka Mizoguchi, Shizuoka, JP;
Mio Kumai, Shizuoka, JP;
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/087 (2006.01); G03G 9/08 (2006.01); G03G 9/093 (2006.01);
U.S. Cl.
CPC ...
G03G 9/08755 (2013.01); G03G 9/0806 (2013.01); G03G 9/0819 (2013.01); G03G 9/0825 (2013.01); G03G 9/0827 (2013.01); G03G 9/08795 (2013.01); G03G 9/08797 (2013.01); G03G 9/093 (2013.01); G03G 9/09392 (2013.01);
Abstract
A toner comprised of mother toner particles each including a colorant, a resin A capable of forming a crystalline structure, and a resin B incapable of forming a crystalline structure is provided. The resin A is dispersed in the resin B in the state of phase separation. The long axis of each dispersed particle of the resin A has a length of from 30 to 200 nm and the length ratio of the long axis to the short axis is from 2 to 15. The DSC endothermic quantity attributable to the resin A is from 8 to 20 J/g.