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Development apparatus and image forming apparatus

A developing device and developer technology are applied in the direction of an electric recording process applying a charge pattern, equipment and instruments for an electric recording process applying a charge pattern, etc. and other problems to achieve the effect of prolonging life and simple structure

Inactive Publication Date: 2008-09-10
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is possible to simply push up the coil spring (82) as a whole along the inclined surface of the conveying blade (422), because in this case, it will return to the original state before being compressed sufficiently, so sufficient compression cannot be obtained. rebound effect, there is a problem that the toner coagulation cannot be reliably crushed

Method used

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  • Development apparatus and image forming apparatus
  • Development apparatus and image forming apparatus
  • Development apparatus and image forming apparatus

Examples

Experimental program
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Embodiment Construction

[0037] Hereinafter, an embodiment of an image forming apparatus equipped with a developing device according to the present invention will be described with reference to the drawings.

[0038] -General Explanation of Image Forming Apparatus-

[0039] 1 is a schematic cross-sectional view showing the configuration of a digital color copier (hereinafter simply referred to as a copier) 1 as a color image forming apparatus according to the present embodiment. This copier 1 includes a reversing automatic document feeder (RADF: Reversing Automatic Document Feeder) 112 , an image reading unit 110 , and an image forming unit 210 .

[0040] On the upper surface of the main body of the copier 1, a document table 111 and an operation panel described later are provided. In addition, double-sided automatic document feeder 112 is supported on the upper surface of document table 111 in a state that can be opened and closed with respect to document table 111 .

[0041] The double-sided autom...

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PUM

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Abstract

The invention provides a development apparatus. In one embodiment, in the development apparatus in which at least a first screw conveyor has been provided in a case, a developer affixing prevention member that prevents a developer from affixing to the first screw conveyor is disposed in the vicinity of a toner resupply port provided in the case. More specifically, the developer affixing prevention member is formed with a torsion coil spring formed from the wire rod whose middle has been wound in a coil-like shape, and in a state with the wound portion of this torsion coil spring supported by a support plate of the case, one arm portion is fixed to the support plate, and another arm portion is extended so as to contact a fin and a rotating shaft of the first screw conveyor.

Description

technical field [0001] This application claims priority based on Japanese Patent Application No. 2007-055920 for which it applied in Japan on March 6, 2007. By means of this statement, its entire content is incorporated into this application. [0002] The present invention relates to a developing device used in an image forming apparatus such as a copier, a printer, and a digital multifunction machine that uses a developer to form an image, and particularly relates to a developing device using a two-component developer. Background technique [0003] Conventionally, in an electrophotographic image forming apparatus, after a photoreceptor is uniformly charged by a charging device, for example, an electrostatic latent image is formed on the photoreceptor by a laser, and the electrostatic latent image is formed into a toner by a developing device. agent image and visualized. Then, after the toner image is transferred to recording paper, it is fixed on the recording paper by a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/08G03G15/01G03G15/00
CPCG03G15/0877G03G15/0893G03G2215/0822G03G2215/0838
Inventor 高山武史
Owner SHARP KK
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