Heat Generating Unit, Fixing Unit And Image Forming Apparatus

A technology of heating unit and heating element, which is applied in the fields of electric recording technology using charge pattern, equipment for electric recording technology using charge pattern, electric recording technique, etc. It can solve the problem of fast response to overheating of the heater and the heat capacity of PTC resistors. Increase and other problems, achieve high reliability, suppress overheating, and suppress local overheating effects

Active Publication Date: 2017-01-04
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the conventional technology in which the current flow is suppressed by the rising resistance of the PTC resistor (PTC element), the PTC resistor must be large enough to exhibit resistance that suppresses the current flow
As a result, the heat capacity of the PTC resistor increases, making it difficult to react quickly to overheating of the heater

Method used

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  • Heat Generating Unit, Fixing Unit And Image Forming Apparatus
  • Heat Generating Unit, Fixing Unit And Image Forming Apparatus
  • Heat Generating Unit, Fixing Unit And Image Forming Apparatus

Examples

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Embodiment Construction

[0021] Exemplary embodiments of the present invention are described below with reference to the accompanying drawings.

[0022] figure 1 is a schematic diagram showing the configuration of a printer serving as an exemplary embodiment of the image forming apparatus of the present invention.

[0023] exist figure 1 The printer 10 shown in is a monochrome printer. An image signal representing an image generated outside the printer 10 is input to the printer 10 via a signal cable or the like (not shown). The printer 10 includes a controller 11 that controls operations of elements inside the printer 10 and into which the image signal is input. In the printer 10 , under the control of the controller 11 , image formation based on the image signal is performed.

[0024] A sheet tray 21 is provided at the bottom of the printer 10 . The sheet trays 21 each accommodate a stack of sheets P. The sheet tray 21 is configured such that the sheet tray 21 can be freely drawn out for suppl...

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PUM

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Abstract

The present invention discloses a heat generating unit, a fixing unit and an image forming apparatus. The heat generating unit includes a substrate; a heat-generating element that is provided on the substrate and generates heat by receiving electric power; and a thermal destruction element provided on the substrate and connected in series to the heat-generating element, the thermal destruction element having a positive temperature coefficient and causing thermal destruction due to self-heating when heated to a temperature higher than a certain temperature by the heat of the heat-generating element.

Description

technical field [0001] The present invention relates to a heat generating unit, a fixing unit, and an image forming apparatus. Background technique [0002] In recent years, in order to realize an energy saving and convenient fixing unit and an image forming apparatus that require a short rise time, there is a reduction in the heat capacity of a heating source (such as a heater) and a member to be heated (such as a fixing belt) of the fixing unit and the image forming apparatus. There is a demand in which the fixing belt is heated by heat conduction by a heater (heat-generating unit) provided in the endless fixing belt. [0003] Such fixing units and image forming apparatuses with reduced heat capacity tend to cause overheating due to the small heat capacity, so there is also a need for a mechanism for preventing smoke and odor due to overheating when poor temperature control occurs. [0004] For example, Japanese Patent Laid-Open No. 2000-260553 provides a technique for pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/20
CPCG03G15/2039G03G15/2064G03G15/55G03G2215/2035G03G15/2053
Inventor 小柳圣佐藤贵亮井上徹
Owner FUJIFILM BUSINESS INNOVATION CORP
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