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:
Apr. 19, 2016
Filed:
Apr. 04, 2013
Tomoko Takahashi, Kanagawa, JP;
Yoshiyuki Fukuda, Tokyo, JP;
Yoshio Hattori, Kanagawa, JP;
Sho Akiyama, Tokyo, JP;
Takamasa Ozeki, Kanagawa, JP;
Yoshinori Nakagawa, Kanagawa, JP;
Mikio Ishibashi, Kanagawa, JP;
Ryuji Yoshida, Kanagawa, JP;
Taichi Urayama, Kanagawa, JP;
Tomoko Takahashi, Kanagawa, JP;
Yoshiyuki Fukuda, Tokyo, JP;
Yoshio Hattori, Kanagawa, JP;
Sho Akiyama, Tokyo, JP;
Takamasa Ozeki, Kanagawa, JP;
Yoshinori Nakagawa, Kanagawa, JP;
Mikio Ishibashi, Kanagawa, JP;
Ryuji Yoshida, Kanagawa, JP;
Taichi Urayama, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A development device is operable in multiple different speed modes and includes a developer bearer to carry developer, a developer regulator to adjust an amount of developer carried on the developer bearer, and multiple developer conveyance members disposed facing the developer bearer to transport developer in a longitudinal direction to circulate developer inside the development device. The multiple developer conveyance members including a first developer conveyance member to supply developer to the developer bearer and a second developer conveyance member to transport developer collected from the developer bearer. The development device executes developer amount balance adjustment in which a driving velocity of at least the multiple developer conveyance members is increased from a driving velocity in a lower-speed mode for a predetermined period after image development in the lower speed mode is completed and before image development in a higher speed mode is started.