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:
Dec. 11, 2012
Filed:
Dec. 21, 2007
Yoshihiro Mikuriya, Nishinomiya, JP;
Hideaki Yasunaga, Ibaraki, JP;
Hiroaki Katoh, Nagaokakyo, JP;
Kazuoki Fuwa, Toyonaka, JP;
Masayuki Hagi, Minoh, JP;
Masahide Inoue, Numazu, JP;
Yoshihiro Mikuriya, Nishinomiya, JP;
Hideaki Yasunaga, Ibaraki, JP;
Hiroaki Katoh, Nagaokakyo, JP;
Kazuoki Fuwa, Toyonaka, JP;
Masayuki Hagi, Minoh, JP;
Masahide Inoue, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A non-magnetic toner, including a binder resin; a wax present dispersing in the toner in the shape of a particle; and a colorant, wherein the wax having a particle diameter not less than 2.0 μm and less than 3.0 μm is not less than 20% and less than 40% by number based on total number thereof; the wax has a mode value not less than 1.5 μm and less than 2.0 μm in a frequency distribution of 0.1 μm width; and the following relationship is satisfied:45<<62wherein X represents a softening point (° C.) of the toner; Y represents a volume-average particle diameter (μm) of the toner; and Z represents a total parts by weight of the wax included in 100 parts by weight of the toner.