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Auxiliary scanning interval adjustment device for mulli-beam laser scanning unit

一种辅助扫描、调整装置的技术，应用在激光器、光学元件、激光器零部件等方向，能够解决激光扫描单元结构复杂、材料成本增大等问题

Inactive Publication Date: 2008-07-23
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] However, the application of compensating software or devices leads to a complicated structure of the laser scanning unit and an increase in material cost

Method used

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  • Auxiliary scanning interval adjustment device for mulli-beam laser scanning unit
  • Auxiliary scanning interval adjustment device for mulli-beam laser scanning unit
  • Auxiliary scanning interval adjustment device for mulli-beam laser scanning unit

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Embodiment Construction

[0102] Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The embodiments are described in order to explain the present invention by referring to the figures.

[0103] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. refer to Figure 4 and Figure 5 , according to an embodiment of the present invention, the auxiliary scanning interval adjusting device 100 for a multi-beam laser scanning unit includes a transparent part 110 , a movable part 120 and an elastic part 130 .

[0104] The transparent member 110 through which the laser beam passes is made of a material such as glass or plastic. The transparent part 110 is usually formed by injection molding. The transparent member 110 has a predetermined optical refractive index, and the refractive index may be greate...

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PUM

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Abstract

A sub-scanning interval adjusting apparatus for a multi-beam scanning unit adjusts an interval between at least two laser lines that are formed on a photoreceptor drum without causing starting points of image formation to vary. In the multi-beam scanning unit simultaneously emitting at least two laser beams by using at least two laser sources, the sub-scanning interval adjusting apparatus includes a transparent member varying in thickness depending on its height, in a direction where the laser beams pass through, the transparent member having an inclined lower side with respect to a scanning direction of the laser beams, and a movable member having an inclined side corresponding to the inclined lower side of the transparent member, thereby adjusting an interval between the laser beams by moving the movable member in the scanning direction and thus varying the height of the transparent member with respect to the laser sources. An elastic member is formed on the transparent member to press the transparent member with respect to the movable member. The transparent member is formed to have a shape of a triangle or a trapezoid in cross-section in the direction where the laser beams pass through. The transparent member has a refractivity greater than 1.

Description

[0001] This application claims priority from Korean Patent Application No. 2002-49961 filed in the Korean Intellectual Property Office on Aug. 23, 2002, the contents of which are incorporated herein by reference. technical field [0002] The present invention generally relates to a multi-beam laser scanning unit used in an image generating device such as a laser printer, and more particularly to an auxiliary scanning interval adjustment device for a multi-beam laser scanning unit for adjusting at least The spacing between the two beams. Background technique [0003] Generally, a laser printer forms an image by focusing a laser beam from a laser scanning unit onto a photosensitive drum according to a video signal, develops an electrostatic latent image on the photosensitive drum, and transfers the developed image to a printing medium such as paper. A representative structure of a laser scanning unit used in a laser printer is in figure 1 shown in . [0004] refer to figure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/10H01S5/00G03G15/04B41J2/47G02B26/12
CPCB41J2/473G02B26/123G02B26/10
Inventor 刘载焕
Owner SAMSUNG ELECTRONICS CO LTD