Invention Application
- Patent Title: DEVELOPING DEVICE AND IMAGE-FORMING APPARATUS
- Patent Title (中): 开发设备和图像形成设备
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Application No.: US12728492Application Date: 2010-03-22
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Publication No.: US20110052223A1Publication Date: 2011-03-03
- Inventor: Toru IWANAMI , Gen Nakajima
- Applicant: Toru IWANAMI , Gen Nakajima
- Applicant Address: JP Tokyo
- Assignee: FUJI XEROX CO., LTD.
- Current Assignee: FUJI XEROX CO., LTD.
- Current Assignee Address: JP Tokyo
- Priority: JP2009-195804 20090826
- Main IPC: G03G15/08
- IPC: G03G15/08 ; G03G15/01
Abstract:
A developing device comprises a developer unit that contains a developer including a color material and a magnetic powder, the color material being used to develop an electrostatic latent image held by an image holding member; a collecting unit that collects a part of the developer contained in the developer unit via a passage; and a measuring unit that measures a concentration of the color material included in the developer based on a magnetic property of the developer moving through the passage.
Public/Granted literature
- US08315533B2 Developing device and image-forming apparatus Public/Granted day:2012-11-20
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