Method of controlling light sources in an electro-photographic image forming device, an image forming method, and an apparatus thereof
A technology for controlling electronics and imaging equipment, which can be applied to equipment using electrical recording technology of charge graphics, devices for permanent visual display, electrical recording technology using charge graphics, etc., and can solve problems such as printing quality degradation
Inactive Publication Date: 2006-12-06
SAMSUNG ELECTRONICS CO LTD
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If any of these color toners are consumed, the print quality of color images formed on photosensitive media will deteriorate
Method used
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[0032] Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The embodiments are described next in order to explain the present invention by referring to the figures.
[0033] figure 1 is a schematic diagram showing an electrophotographic image forming apparatus. The electrophotographic image forming apparatus includes a photosensitive medium 100, a laser scanning unit (LSU) 110, a developing unit 120, a transfer belt 130, a transfer roller 140, a fixing unit 150, a charging unit 160, a static elimination unit 170, a photosensitive medium cleaning unit 180, and A transfer belt cleaning unit 190 .
[0034] The charging unit 160 uniformly charges the photosensitive medium 100 . The LSU 110 radiates light related to image data onto the photosensitive medium 100 to form an electrostatic latent image. The LSU 110 is a laser scanning ...
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A method of controlling a plurality of light sources included in a multi-beam laser scanning unit in an electro-photographic image forming apparatus, an image forming method, and an apparatus thereof. The image forming method includes detecting remaining amounts of toner that correspond to printable colors, detecting any color having a remaining amount of toner that is depleted based on the detected remaining amounts of toner, and radiating light onto a photosensitive medium by using selected ones of the plurality of light sources with respect to the color having the detected remaining amount of toner that is depleted. Accordingly, in the electro-photographic image forming apparatus having the plurality of light sources, the amounts of remaining toner of corresponding printable colors are detected so that the selected ones of the plurality of light sources among the plurality of light sources can be used when radiating light onto the photosensitive medium for the color having the remaining amount of toner that is depleted. Therefore, without an additional image data conversion, the amounts of remaining toner of the corresponding printable colors can be evenly maintained to uniformly preserve the quality of printed images.
Description
technical field [0001] The general inventive concept of the present invention relates to an electrophotographic image forming apparatus, and more particularly, to a method of controlling a plurality of light sources included in a multi-beam laser scanning unit of an electrophotographic image forming apparatus, an image forming method and an apparatus thereof. Background technique [0002] Generally, in an electrophotographic image forming apparatus, light is directed onto a uniformly charged photosensitive medium to form an electrostatic latent image, toner is supplied to the electrostatic latent image to form a toner image, transferred onto a recording medium, and fused The toner image is used to form an image. The device incorporates a laser scanning unit to provide light that irradiates the photosensitive medium in the electrophotographic image forming device. In order to increase the printing speed, a multi-beam laser scanning unit has recently been developed. In order...
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IPC IPC(8): G03G13/08G03G13/04G03G13/01G03G13/00G06F17/00G03G15/01G03G15/00
CPCG03G15/043G06K2215/0085G03G15/011G03G2215/0164G03G15/0435G03G2215/0404G06K15/128H04N1/506G03G2215/0174G03G15/01G03G15/04G03G15/08
Inventor 金洋吾
Owner SAMSUNG ELECTRONICS CO LTD