Image fixing apparatus image forming apparatus using the same

A technology for fixing belts and detection devices, which is applied to electrical recording technology using charge graphics, equipment and instruments using electrical recording technology using charge graphics, and can solve problems such as poor bonding accuracy, peeling, and the inability of the core to be close to the fixing part and other problems to achieve the effect of suppressing temperature rise and reducing variable errors
CN100454173CInactive Publication Date: 2009-01-21RICOH KK
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
RICOH KK
Publication Date
2009-01-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a fixing device, in particular to a fixing device that adopts a heating method of electromagnetic induction and an image forming device. The fixing device 20, which is used for fixing an toner image T on a recording medium P, is provided with a magnetic flux generation means 24 that is used for generating the magnetic flux, heating components 22 and 23 that are heated by induction of the magnetic flux, a magnetic flux adjusting component 29 in the width direction, the set adjustment range of which lowers the magnetic flux that affects the heating components 22 and 23; the adjusting component 29 can be driven to adjust a changeable means of changeable adjustment range. During the period of continuous fixation of the toner image T by a plurality of recording media P, the changeable means controls and drives the adjusting component 29. The present invention also provides a fixing device and an image forming device, which can reliably inhibit the temperature of the heating components or the two ends in the width direction of the fixing component, even on the occasions of continuous fixation of a plurality of recording media.
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Description

technical field

[0001] The present invention relates to electrophotographic image forming devices, such as copiers, printers, facsimile machines, and multifunction machines, and a fixing device provided therein, and more particularly, to a fixing device and an image forming device using electromagnetic induction heating. Background technique

[0002] In the past, in copiers, printers and other image forming devices, in order to reduce the rise time of the device, for the purpose of saving energy, a fixing device using electromagnetic induction heating is known. Patent Document 1") Publication.

[0003] In Patent Document 1, the fixing device of the electromagnetic induction heating method is mainly composed of a backup roller (heating roller), a fixing auxiliary roller (fixing roller), and a fixing belt (heat-resistant belt) spanned by the backup roller and the fixing auxiliary roller. The magnetic flux generating means facing the backup roller is constituted by the fixing ...

Claims

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