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. 01, 2010
Filed:
Sep. 17, 2007
Hiroyuki Murakami, Toyonaka, JP;
Masahide Inoue, Numazu, JP;
Masayuki Hagi, Minoo, JP;
Takuya Kadota, Kobe, JP;
Yoshihiro Mikuriya, Nishinomiya, JP;
Hideaki Yasunaga, Ibaraki, JP;
Hiroaki Katoh, Nagaokakyo, JP;
Yoshimichi Ishikawa, Itami, JP;
Kazuoki Fuwa, Toyonaka, JP;
Hiroyuki Murakami, Toyonaka, JP;
Masahide Inoue, Numazu, JP;
Masayuki Hagi, Minoo, JP;
Takuya Kadota, Kobe, JP;
Yoshihiro Mikuriya, Nishinomiya, JP;
Hideaki Yasunaga, Ibaraki, JP;
Hiroaki Katoh, Nagaokakyo, JP;
Yoshimichi Ishikawa, Itami, JP;
Kazuoki Fuwa, Toyonaka, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
A toner including toner particles including a binder resin, and a colorant, and an external additive present on a surface of the toner particles, wherein the external additive includes a silica having an average primary particle diameter of from 100 to 500 nm and a BET specific surface area of from 800 to 1000 m/g. An image forming method including forming an electrostatic image on an image bearing member; developing the electrostatic image with the toner to form a toner image; and transferring the toner image on to a receiving material. An image forming apparatus including an image bearing member bearing an electrostatic image; a developing device developing an electrostatic image with the toner to form a toner image on the image bearing member; a transfer device transferring the toner image to a receiving material; and a fixing device fixing the toner image on the receiving material.