Invention Grant
US08175480B2 Fixing device including plural demagnetizing coils and image forming apparatus
有权
固定装置包括多个消磁线圈和图像形成装置
- Patent Title: Fixing device including plural demagnetizing coils and image forming apparatus
- Patent Title (中): 固定装置包括多个消磁线圈和图像形成装置
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Application No.: US12332784Application Date: 2008-12-11
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Publication No.: US08175480B2Publication Date: 2012-05-08
- Inventor: Hiroshi Seo , Takamasa Hase
- Applicant: Hiroshi Seo , Takamasa Hase
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company Limited
- Current Assignee: Ricoh Company Limited
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2007-320012 20071211
- Main IPC: G03G15/20
- IPC: G03G15/20

Abstract:
A fixing device includes a heat applying system having an exciting coil that creates a magnetic flux for generating induction heat in a heat generation layer provided in a fixing roller. Plural demagnetizing coils are stacked in plural layers partially overlying the exciting coil to cancel the magnetic flux at one end of the fixing roller. The plural demagnetizing coils partially overlap each other.
Public/Granted literature
- US20090148205A1 FIXING DEVICE AND IMAGE FORMING APPARATUS Public/Granted day:2009-06-11
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