Invention Grant
US07212752B2 Image forming apparatus and a developing apparatus having a unit for determining a mixture ratio of two types of magnetic toner based on magnetic permeability and amount
失效
图像形成装置和具有用于基于磁导率和量确定两种类型的磁性调色剂的混合比的单元的显影装置
- Patent Title: Image forming apparatus and a developing apparatus having a unit for determining a mixture ratio of two types of magnetic toner based on magnetic permeability and amount
- Patent Title (中): 图像形成装置和具有用于基于磁导率和量确定两种类型的磁性调色剂的混合比的单元的显影装置
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Application No.: US10976773Application Date: 2004-11-01
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Publication No.: US07212752B2Publication Date: 2007-05-01
- Inventor: Soh Hirota , Masaki Tanaka , Masahiro Kouzaki , Kazuomi Sakatani , Mitsuru Obara
- Applicant: Soh Hirota , Masaki Tanaka , Masahiro Kouzaki , Kazuomi Sakatani , Mitsuru Obara
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta Business Technologies, Inc.
- Current Assignee: Konica Minolta Business Technologies, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Morrison & Foerster LLP
- Priority: JP2004-229099 20040805
- Main IPC: G03G15/08
- IPC: G03G15/08
Abstract:
An electrophotographic image forming apparatus includes a developer reservoir for accommodating a single-component mixed developer including two types of toner having a generally identical hue and different reflection densities. A magnetic substance is added to one of the two types of toner. The apparatus also includes a detector for detecting a magnetic permeability of the developer in the developer reservoir and a unit for determining a mixture ratio of the two types of toner based on the magnetic permeability of the developer detected by the detector.
Public/Granted literature
- US20060029403A1 Image forming apparatus and developing apparatus Public/Granted day:2006-02-09
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