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Optical scanning device

A technology of optical scanning and isokinetic scanning, used in optics, optical components, electrography, etc., can solve problems such as optical path deviation, and achieve the effect of preventing corona corrosion

Inactive Publication Date: 2012-08-22
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This skews the light path from the polygon mirror to the individual mirrors associated with each color

Method used

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  • Optical scanning device
  • Optical scanning device
  • Optical scanning device

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Embodiment Construction

[0021] Hereinafter, an image forming apparatus provided with an optical scanning device according to an embodiment of the present invention will be described.

[0022] refer to figure 1 , the image forming apparatus 100 provided with the optical scanning device 1 according to the embodiment of the present invention is configured to form a multi-color or monochrome image on predetermined paper (ie, recording paper) according to image data.

[0023] The image forming apparatus 100 includes an apparatus main body 110 on which is provided an original table 92 made of transparent glass on which an original is placed, and an image reading unit 90 configured to read an image of an original placed on the original table 92 . Automatic document processing device 120 is installed above document table 92 . The automatic document processing device 120 automatically transports the document onto the document stage 92 . The automatic document processing device 120 is pivotable, and allows a...

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PUM

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Abstract

According to the present invention, an optical scanning device comprises a plurality of light sources, an optical scanning component and a plurality of first lenses, wherein the plurality of light sources are configured to emit respective laser beams, the optical scanning component is configured to scan every laser beam from the plurality of light sources with a constant speed in a predetermined direction, the plurality of lenses are arranged at respective positions with different distances away from the optical scanning component and are respectively configured to reflect one corresponding beam scanned by the optical scanning component to a scanned object, the plurality of light sources are arranged at different positions with different distances away from the optical scanning component, the first lenses are arranged to enable the laser beam transmitted on a longer incident optical path from the light sources to the optical scanning component to transmit on a shorter outgoing optical path from the optical scanning component to the first lenses.

Description

technical field [0001] The present invention relates to an optical scanning device that scans a scanning object using a laser beam from a light source, and an image forming device configured to form an electrostatic latent image on an image bearing member that is a scanning object using the optical scanning device. Background technique [0002] For example, such an optical scanning device is suitable for an image forming device having image bearing members associated with four colors, black (K), cyan (C), magenta (M), and yellow (Y). This type of optical scanning device includes polygon mirrors for reflecting laser beams emitted from light sources associated with each color, and mirrors associated with each color for separating the laser beams reflected by the polygon mirrors. The optical scanning device scans the image bearing member associated with each color with each separated laser beam to form an electrostatic latent image (see, for example, Japanese Patent Laid-Open N...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/12G03G15/00
CPCG02B26/123
Inventor 上田笃
Owner SHARP KK
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