Development unit for developing electrostatic latent images

A developing unit and electrostatic latent image technology, applied to the electric recording process using charge pattern, equipment for electric recording process using charge pattern, and electric recording, which can solve the problem of thinning of toner image

Inactive Publication Date: 2010-03-03
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the toner image on the paper will also be thinner

Method used

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  • Development unit for developing electrostatic latent images
  • Development unit for developing electrostatic latent images
  • Development unit for developing electrostatic latent images

Examples

Experimental program
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Effect test

Embodiment Construction

[0028] Next, refer to Figure 2 to Figure 6(b) A laser printer incorporating the developing cartridge according to the first embodiment of the present invention will be described.

[0029] Such as figure 2 As shown, the laser printer 1 includes a main casing 2 , a feeding unit 4 and an imaging unit 5 . The feeding unit 4 and the imaging unit 5 are accommodated in the main housing 2 . The feeding unit 4 feeds the paper 3 to the image forming unit 5 . The image forming unit 5 forms a desired image on the supplied paper 3 .

[0030] The feed unit 4 is located at the lower part of the main casing 2 and includes a paper feed tray 6 , a paper platen 7 , a paper feed roller 8 , a paper feed pad 9 , paper dust removing rollers 10 , 11 and registration rollers 12 . The paper feed tray 6 is detachably attached to the main casing 2 . A paper platen 7 is pivotally and movably provided in the paper feed tray 6 . A paper feed roller 8 and a feed low pad 9 are provided on one end of t...

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PUM

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Abstract

A development unit performing developing operation for developing electrostatic latent image with toner. The development unit includes a holding chamber wall defining a toner holding chamber, and a development chamber wall defining a development chamber in which a developing roller and a toner supply roller are provided. A partition wall is provided for partitioning the holding chamber from the development chamber. An elongated through hole is formed in the partition wall for bringing the holding chamber into fluid communication with the development chamber. An agitator is rotatably provided in the holding chamber for supplying the toner in the holding chamber into the development chamber through the through hole. A plurality of slats or grids are provided at the through hole, so that a plurality of slits are provided between neighboring slats. These slits allows the toner to pass therethrough from the holding chamber to the development chamber, and these slats restricts return of thetoner from the development chamber to the holding chamber.

Description

[0001] The patent application of the present invention is a divisional application of the application number 03121643.9 filed on March 12, 2003 and entitled "Developing Unit for Developing Electrostatic Latent Images" submitted by the applicant Brother Industries, Ltd. technical field [0002] The present invention relates to a developing unit for developing an electrostatic latent image. Background technique [0003] figure 1 A developing cartridge 128 for installation in a laser printer is shown. The developing cartridge 128 is divided into a holding chamber 134a for holding toner and a developing chamber 134b for developing an image with the toner. The holding chamber 134a and the developing chamber 13b are in fluid communication with each other through an opening 137 . A stirring member 155 is provided in the holding chamber 134a. Rotation of the agitating member 155 transports the toner held in the holding chamber 134a through the opening 137 to the developing chambe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/08
Inventor 佐藤正吾堀乃江满
Owner BROTHER KOGYO KK
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