Optical scanning apparatus and image forming apparatus employing the same
An optical scanning device and image technology, applied in the direction of optics, optical components, electrical recording technology using charge patterns, etc., can solve the problems of reduced performance of the spindle motor, increased size of optical scanning equipment, increased power consumption, etc.
Inactive Publication Date: 2007-01-17
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology
[0017] Since the aforementioned single-beam or multi-beam optical scanning utilizes a spindle motor to rotate the polygon mirror, problems such as jitter and repeatable run out (RRO) arise
In addition, the performance of mechanical components such as spindle motors degrades depending on the frequency of use
[0018] In addition, the laser beam passes through multiple optical components, thereby increasing power consumption
Likewise, for high-speed scanning of multiple beams, multiple laser diodes must be used
In addition, the size of the optical scanning device increases due to the use of multiple laser diodes
Method used
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[0036] Exemplary embodiments of the present invention will be described more fully below with reference to the accompanying drawings.
[0037] image 3 is a schematic diagram of the overall structure of an optical scanning device according to an exemplary embodiment of the present invention.
[0038] refer to image 3 , the optical scanning device of the exemplary embodiment of the present invention includes a light source 53 for emitting light, a diffraction device and a diffraction controller 57 . The diffraction means diffracts the light emitted from the light source 53 so that the diffracted light is focused on a scanning surface such as the image forming surface 50a of the photosensitive drum 50 to correspond to an image signal. The diffraction controller 57 controls the diffraction device to diffract light according to image information on an image to be formed.
[0039] The optical scanning device includes an optical unit 55 that shapes light emitted from a light sou...
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An optical scanning apparatus includes a light source that emits light. A diffraction device diffracts light emitted from the light source to image the light onto an image forming surface in accordance with image information. A diffraction controller sends diffraction information to the diffraction device to form a diffraction grating image on the diffraction device in a predetermined pattern to image the light in accordance with the image information. The optical scanning apparatus is used by an image forming apparatus.
Description
[0001] Cross References to Related Patent Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2005-0045206 filed with the Korean Intellectual Property Office on May 27, 2005, the entire disclosure of which is hereby incorporated by reference. technical field [0003] The present application relates to an optical scanning device and an image forming device using the same. More specifically, the present application relates to an optical scanning device and an image forming device using the same, wherein the optical scanning device does not include a spindle motor. Background technique [0004] Optical scanning devices such as laser scanning units (LSUs) are used in image forming devices such as copiers, printers and facsimiles. In an optical scanning device, a light source such as a laser diode emits a light beam corresponding to a video signal, and then the light beam is projected onto a photoconductor of an image forming device to f...
Claims
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IPC IPC(8): G02B26/10G03G15/04G03G15/00G02B27/44
CPCG03H1/2294G03H1/08G02B26/106G03H1/0005G03H2210/20G02B26/10
Inventor 金旼奎刘载焕
Owner SAMSUNG ELECTRONICS CO LTD