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:
Sep. 07, 2010
Filed:
May. 29, 2007
Masayoshi Nakayama, Minato-ku, JP;
Yoshitaka Fujinuma, Minato-ku, JP;
Takashi Suzuki, Minato-ku, JP;
Susumu Tateyama, Minato-ku, JP;
Tsutomu Nakagawa, Minato-ku, JP;
Tatsuya Kubo, Minato-ku, JP;
Masayoshi Nakayama, Minato-ku, JP;
Yoshitaka Fujinuma, Minato-ku, JP;
Takashi Suzuki, Minato-ku, JP;
Susumu Tateyama, Minato-ku, JP;
Tsutomu Nakagawa, Minato-ku, JP;
Tatsuya Kubo, Minato-ku, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
In a developing device, a receive-convey screw conveys a developer received from a developer carrier. The receive-convey screw includes a receive-convey blade including a lower, outer circumferential end located in a downstream end of the receive-convey blade in the developer conveyance direction of the receive-convey screw. A slant-convey screw is disposed obliquely relative to an axial direction of the receive-convey screw, and conveys the developer received from the receive-convey screw upward. The slant-convey screw includes a slant-convey blade including a lower, outer circumferential end located in an upstream end of the slant-convey blade in the developer conveyance direction of the slant-convey screw, the lower, outer circumferential end being located at a height level lower than the lower, outer circumferential end of the receive-convey blade.