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. 11, 2011
Filed:
Jan. 05, 2009
Yoshihiro Mikuriya, Nishinomiya, JP;
Kazuoki Fuwa, Kawanishi, JP;
Hiroaki Katoh, Nagaokakyo, JP;
Yoshitaka Sekiguchi, Nishinomiya, JP;
Hideaki Yasunaga, Ibaraki, JP;
Masayuki Hagi, Minoh, JP;
Yoshihiro Mikuriya, Nishinomiya, JP;
Kazuoki Fuwa, Kawanishi, JP;
Hiroaki Katoh, Nagaokakyo, JP;
Yoshitaka Sekiguchi, Nishinomiya, JP;
Hideaki Yasunaga, Ibaraki, JP;
Masayuki Hagi, Minoh, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
A non-magnetic toner including a binder resin including a first resin, a second resin, a third resin; a colorant; and a wax, wherein the first resin is a hybrid resin including an amorphous condensation polymerization unit and a radical polymerization unit in its molecular frame, and the second and third resins are non-hybrid resins including condensation polymerization units, wherein each of the first, second and third resins has a glass transition temperature (Tg) and a softening point (Tm) satisfying the following relationships:Tg of first resin<Tg of second resin<Tg of third resin, which is from 70 to 80° C., andTm of second resin<Tm of third resin<Tm of first resin, and