Invention Grant
- Patent Title: Fixing device and image forming apparatus having improved accuracy of temperature control
- Patent Title (中): 具有提高的温度控制精度的固定装置和成像装置
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Application No.: US12797069Application Date: 2010-06-09
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Publication No.: US08358947B2Publication Date: 2013-01-22
- Inventor: Yutaka Otsuka
- Applicant: Yutaka Otsuka
- Applicant Address: JP Chiyoda-Ku, Tokyo
- Assignee: Konica Minolta Business Technologies, Inc.
- Current Assignee: Konica Minolta Business Technologies, Inc.
- Current Assignee Address: JP Chiyoda-Ku, Tokyo
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: JP2009-155394 20090630
- Main IPC: G03G15/20
- IPC: G03G15/20
Abstract:
In a fixing device, having a sheet portion and an inter-sheet portion, heats and fixes the toner image onto each of sheets by rotationally bringing the sheet portion into contact with each sheet. A heating unit heats the fixing unit. A sensing unit senses a temperature of the fixing unit. A control unit controls a duty ratio of on/off of the heating unit based on a sensing output of the sensing unit, determines whether the sensing unit is sensing the temperature of the sheet portion or the temperature of the inter-sheet portion in a rotation cycle, and controls the temperature of the heating unit by using the adjustment value corresponding to the sheet portion or the inter-sheet portion depending on a determination result.
Public/Granted literature
- US20100329720A1 FIXING DEVICE AND IMAGE FORMING APPARATUS HAVING IMPROVED ACCURACY OF TEMPERATURE CONTROL Public/Granted day:2010-12-30
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