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:
Jul. 19, 2011
Filed:
Sep. 14, 2007
Hiroaki Katoh, Nagaokakyo, JP;
Hideaki Yasunaga, Ibaraki, JP;
Kazuoki Fuwa, Toyonaka, JP;
Yoshihiro Mikuriya, Nishinomiya, JP;
Masayuki Hagi, Minoo, JP;
Masahide Inoue, Numazu, JP;
Hiroaki Katoh, Nagaokakyo, JP;
Hideaki Yasunaga, Ibaraki, JP;
Kazuoki Fuwa, Toyonaka, JP;
Yoshihiro Mikuriya, Nishinomiya, JP;
Masayuki Hagi, Minoo, JP;
Masahide Inoue, Numazu, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
A toner including toner particles including a resin, a colorant, a wax, and a charge controlling agent, and an external additive, wherein the toner satisfies the relationships (1) 0.15×Q−2≦T≦0.15×Q−0.15, and (2) 1.0≦T≦2.5, wherein Q represents the charge of the toner in units of μC/g, and T represents the torque of the toner in units of mN·m determined by a method using a cone-shaped rotor while controlling a space ratio of the toner at 58%. A developer including the toner and a carrier. An image forming apparatus including an image bearing member, a transfer device, a fixing device and a double side image forming unit, and using the toner, wherein the receiving material includes moisture in an amount of not greater than 5% by weight after the toner image on the first side is fixed.