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:
Jul. 31, 2012
Filed:
Sep. 23, 2009
Kunio Shigeta, Yokohama, JP;
Naoya Iwata, Yokohama, JP;
Kunio Shigeta, Yokohama, JP;
Naoya Iwata, Yokohama, JP;
SAMSUNG Electronics Co., Ltd., Suwon-si, KR;
Abstract
A developing apparatus includes a first rotation member having a rotation shaft to transfer developer in a first direction and a mixing and transfer member having a spiral wing shape to mix and transfer the developer to the center portion of the rotation shaft, a second rotation member having a rotation shaft including a mixing and transfer member to transfer the developer in a direction opposite to the first direction by the first rotation member and a circulation auxiliary member to transfer the developer to the center portion of the rotation shaft, two end portion partition walls formed along the circulation auxiliary member, and a center partition wall formed along the mixing and transfer member at a position separated from the end portion partitions wall.