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:
Sep. 03, 2010
Miho Ikeda, Kanagawa, JP;
Makoto Hirota, Kanagawa, JP;
Jun Abe, Kanagawa, JP;
Shota Oba, Kanagawa, JP;
Takashi Ochi, Kanagawa, JP;
Miho Ikeda, Kanagawa, JP;
Makoto Hirota, Kanagawa, JP;
Jun Abe, Kanagawa, JP;
Shota Oba, Kanagawa, JP;
Takashi Ochi, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A developing device includes: a first-developer-holding-member facing a surface of a rotating latent image carrier, it rotating such that a moving direction thereof is opposite to that of the carrier at a portion where they face; a second-developer-holding-member provided at a downstream-side of the first-developer-holding-member in a direction in which the carrier rotates, and facing the surface of the carrier, it rotating such that a moving direction thereof is the same as that of the carrier at a portion where they face; a ratio of circumferential speeds of the first-developer-holding-member and the second-developer-holding-member being variable; a splitting member that splits a developer for the first-developer-holding-member and the second-developer-holding-member by hitting against the developer located between the first-developer-holding-member and the second-developer-holding-member; a moving unit that moves the splitting member; and a control unit that controls the moving unit to move the splitting member to vary split ratio of the developer.