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Electric power apparatus, electromagnetic induction fixing apparatus and image forming apparatus using the same

A power device, electromagnetic induction heating technology, applied in induction heating devices, equipment for electrical recording technology using charge patterns, electrical recording technology applying charge patterns, etc., can solve damage, affect company profits, and increase voltage tolerance excess. And other issues

Inactive Publication Date: 2005-12-07
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a problem that due to the excessive increase of the voltage tolerance, it affects the profit of the company rather adversely
[0015] For this reason, the conventional voltage resonance circuit power source has such a problem that a damage defect occurs in the market due to a surge voltage of lightning that occurs in the commercial AC voltage to be input, a power defect of the power supply company, and a momentary drop or rise

Method used

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  • Electric power apparatus, electromagnetic induction fixing apparatus and image forming apparatus using the same
  • Electric power apparatus, electromagnetic induction fixing apparatus and image forming apparatus using the same
  • Electric power apparatus, electromagnetic induction fixing apparatus and image forming apparatus using the same

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Embodiment Construction

[0049] Below, refer to Figure 1-9 Embodiments of the present invention will be described. In these drawings, the same elements have the same reference numerals, and repeated explanations are omitted.

[0050] figure 1 is an explanatory view showing the structure of an image forming apparatus including a fixing device according to an embodiment of the present invention, figure 2 is shown to be used for figure 1 An explanatory view of the structure of the fixing device according to an embodiment of the present invention in the image forming apparatus of , image 3 is shown removed, constituting figure 2 Explanatory view of the structure of the heat roller in the fixing device, Figure 4 is shown in the figure 2 Structural view of the exciting coil and short ring of the fixing device in , Figure 5 is an explanatory view showing the magnetic flux state of the induction heating device according to the embodiment of the present invention, Figure 6 is an explanatory v...

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Abstract

A power apparatus including a switching unit for supplying a power to an exciting coil, switching unit voltage detecting means for detecting that a voltage to be applied to the switching unit exceeds a safe operating voltage range, and power control means for controlling a power to be supplied to the coil in response to a detection signal of the switching unit voltage detecting means.

Description

technical field [0001] The invention relates to a power device for use in a heating device using electromagnetic induction heating. Background technique [0002] For image forming apparatuses such as printers, copiers, or facsimiles, in recent years, there has been a great demand in the market for energy saving and increased speed. In order to realize these demands, it is important to improve the thermal efficiency of the fixing device in the image forming apparatus. [0003] In the image forming apparatus, recording on such as recording material paper, printing paper, photosensitive paper, or electrostatic recording paper is performed by an image transfer method or a direct method via an image forming process such as electrophotographic recording, electrostatic recording, or magnetic recording. An unfused toner image forms on the material. As a fixing device for fixing an unfixed toner image, a fixing device using a contact heating method such as a heat roller method, a f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20H05B6/04H05B6/06
Inventor 野中康浩野口智之梶原忠之
Owner PANASONIC CORP