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Image forming apparatus having remaining toner removing part and method of removing remaining toner thereof

A toner and image technology, applied in the field of residual toner removal, can solve the problems of increasing the cost of cleaning the printing media conveyor belt, hindering the effective use of space, etc.

Inactive Publication Date: 2008-06-25
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use of a separate charging device (not shown) and control device (not shown) increases the cost of cleaning the print media conveyor belt 31 and prevents efficient use of space

Method used

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  • Image forming apparatus having remaining toner removing part and method of removing remaining toner thereof
  • Image forming apparatus having remaining toner removing part and method of removing remaining toner thereof
  • Image forming apparatus having remaining toner removing part and method of removing remaining toner thereof

Examples

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Embodiment Construction

[0052] Reference will now be made in detail to provided embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The embodiments described below are to explain the present invention by referring to the figures.

[0053] Hereinafter, an image forming apparatus according to aspects of the present invention will be described as an example using a single-pass type electrophotographic image forming apparatus having a plurality of photosensitive media. As shown in FIG. 2, the image forming apparatus 100 according to the first embodiment of the present invention includes: a feeding portion 110; a belt unit 130; a plurality of developing cartridges 140Y, 140M, 140C, and 140K; having a plurality of transfer rollers 150Y, 150M , the transfer roller unit 150 of 150C and 150K; and the fixing unit 160 .

[0054] The feeding section 110 includes a knockout plate 113 and a pick-up roller ...

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PUM

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Abstract

An image forming apparatus includes a belt to transfer a printing medium, a plurality of support rollers which rotatably supports the belt, a photosensitive medium which has a surface on which a visible toner image is formed by charged toner, a transfer roller which is disposed adjacent to the photosensitive medium with the belt interposed therebetween, a power supplying part which supplies power to the transfer roller so that a surface of the transfer roller has an electrical potential, and a control part which controls the power supplying part to supply a pulse power, which has a middle power of a same polarity as a polarity of the charged toner, to the transfer roller so that the charged toner remaining on the belt after the belt transfers the printing medium past the photosensitive medium is transferred back to the photosensitive medium.

Description

technical field [0001] The present invention relates to an image forming apparatus having a residual toner removing portion and a method for removing residual toner, and more particularly, to an image forming apparatus having a residual toner removing portion capable of effectively removing toner remaining on a belt Image forming apparatus and method of removing residual toner. Background technique [0002] Generally, an image forming apparatus of an electrophotographic type forms an image on a printing medium through a series of operations. These operations include charging the print media and other components, exposing the electrostatic latent image on the photosensitive media, developing the image on the photosensitive media, transferring the image to the print media, and fixing the image to the print media. In addition, there are various electrophotographic type image forming apparatuses currently on the market, including, for example, laser printers, scanners, copiers,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/00G03G15/08G03G15/01G03G21/00
CPCG03G2215/0119G03G2215/0145G03G15/168G03G21/00
Inventor 朱政勇安秉善权五得
Owner SAMSUNG ELECTRONICS CO LTD
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