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:
Oct. 27, 2009
Filed:
Sep. 12, 2006
Shinya Nakayama, Numazu, JP;
Hisashi Nakajima, Numazu, JP;
Hideki Sugiura, Fuji, JP;
Fumihiro Sasaki, Fuji, JP;
Akihiro Kotsugai, Numazu, JP;
Satoshi Mochizuki, Numazu, JP;
Shinya Nakayama, Numazu, JP;
Hisashi Nakajima, Numazu, JP;
Hideki Sugiura, Fuji, JP;
Fumihiro Sasaki, Fuji, JP;
Akihiro Kotsugai, Numazu, JP;
Satoshi Mochizuki, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
To provide an image forming method including forming a latent electrostatic image on a latent electrostatic image bearing member, developing the latent electrostatic image using a toner to form a visible image, transferring the visible image to a recording medium, and fixing a transfer image transferred on the recording medium, wherein the toner includes a toner base particle containing at least a binder resin, a colorant and an inorganic fine particle, and a charge control agent; and wherein the condition X>Xis satisfied (where Xis an average proportion of the inorganic fine particles in a near-surface region of the toner base particle, Xis an average proportion of inorganic fine particles in the whole toner base particle.