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Image forming device

An imaging device, electrostatic latent image technology, applied in image communication, electrography, optics, etc., can solve the problems of exposure potential difference, development density difference, etc.

Inactive Publication Date: 2006-12-06
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difference in the area of ​​the exposure unit, the exposure potential difference between the middle and the opposite end is an important cause of the development density difference

Method used

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Embodiment Construction

[0025] Specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. Throughout the figures, the same reference numerals are used to denote the same components. Hereinafter, detailed descriptions of well-known functions and constructions employed herein will be omitted for conciseness and clarity.

[0026] image 3 is a schematic diagram of an imaging device of an embodiment of the present invention.

[0027] see image 3 , The image forming apparatus of the embodiment of the present invention includes: photosensitive drum 100, exposure unit 200, developing unit 300, transfer roller 400, charging roller 500, fixing roller assembly 600, HVPS (High Voltage Power Supply) 700 and control part or unit 800.

[0028] The photosensitive drum 100 may be an OPC (Organic Photosensitive) drum. The surface of the photosensitive drum 100 is charged with regular high voltage by the charging roller 500 and imaged by light before pri...

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Abstract

An image forming device has a radiation element for emitting a light, a mirror motor for reflecting the light emitted from the radiation element, a lens for focusing and irradiating the reflected light to the photosensitive drum, and a light exposure unit including a first and a second control modules for controlling an energy of the light emitted from the radiation element for each light exposure unit. Therefore, the variation of development density can be minimized.

Description

technical field [0001] The present invention relates to an image forming apparatus, and more particularly, the present invention relates to an image forming apparatus capable of minimizing variations in development density occurring at opposite edges and central portions of a printed document. Background technique [0002] Generally, laser printers, LPH (Light Emitting Diode Print Head) printers, and facsimile machines include image forming devices. The imaging device completes the printing through the processes of charging, scanning, developing, transferring and fixing. [0003] The imaging device includes: a photosensitive drum charged with a high voltage by a charging roller, an exposure unit for forming an electrostatic latent image, a developing unit for converting the electrostatic latent image into a visible image, and a title page for transferring the visible image to paper A transfer unit, and a fuser unit for fixing the toner transferred to the paper. [0004] If...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/04G02B26/10
CPCG03G15/043H04N1/12G03G15/0435G03G2215/0404H04N1/1135H04N2201/0082G02B26/127G03G15/04
Inventor 田仁哲
Owner SAMSUNG ELECTRONICS CO LTD