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Heater, fixing device and image forming apparatus

A heater and image technology, applied in the direction of drum heating device, electric heating device, electric recording process equipment using charge pattern, etc., can solve the problems of increasing power consumption and rising time

Inactive Publication Date: 2009-08-19
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, not only does it take time for the temperature to rise from the start of heating, but also increases power consumption

Method used

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  • Heater, fixing device and image forming apparatus
  • Heater, fixing device and image forming apparatus
  • Heater, fixing device and image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0021] Figure 6 is a schematic structural diagram illustrating an image forming apparatus using a fixing device of an exemplary embodiment of the present invention.

[0022] Figure 6 The image forming apparatus shown in has a cylindrical photosensitive drum 41 on the surface of which a latent image is formed based on an electrostatic potential difference generated when image light is irradiated after being uniformly charged. The image forming apparatus is further provided around the photosensitive drum 41: a charging device 42 for uniformly charging the surface of the photosensitive drum 41; A latent image is formed on the surface of the drum; a developing unit 44 selectively transfers toner to the latent image on the photosensitive drum to form a toner image; an endless belt-shaped intermediate transfer member 45 is opposed to the photosensitive dru...

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PUM

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Abstract

A heater includes: a hollow tube sealed hermetically and reduced in pressure, the interior of the hollow tube being divided by at least one partition wall into a plurality of regions arranged side by side in a longitudinal direction of the tube; an electron source provided in each of the divided regions, the electron source being supported inside the hollow tube in an electrically insulated state from the hollow tube; a power supply that applies a voltage between the hollow tube and the electron source with the electron source as a negative polarity side; and the electron source emitting electrons toward an inner periphery surface of the hollow tube to heat the hollow tube.

Description

technical field [0001] The present invention relates to a heater in which a voltage is applied between opposing electrodes in a depressurized state, and an anode electrode (anode) is heated by electrons emitted from a cathode electrode (cathode) as an electron source; A fixing device for fixing a toner image using the heater; and an image forming apparatus. Background technique [0002] In general, regarding the toner image fixing method in an image forming apparatus using powdery toner, a method is widely used in which a toner image is electrostatically transferred to a recording medium, followed by sandwiching the recording medium between heating members The toner image is heated between the pressing member and the toner image is pressure-bonded to the recording medium. [0003] In the fixing device, a halogen lamp is widely used as a heating source for heating a toner image. For example, a fixing roller having a halogen lamp and a pressing roller pressed on the fixing r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/20H05B7/00G03G15/00
CPCH05B3/0095H05B2214/04
Inventor 长谷波茂彦上原康博
Owner FUJIFILM BUSINESS INNOVATION CORP