Laser beam generating apparatus for a laser scanning unit
A generation device, laser scanning technology, applied to optical elements, electrical recording technology using charge graphics, equipment using electrical recording technology using charge graphics, etc., can solve assembly errors, heat generation, UV adhesive volume changes, etc. problem, achieve the effect of preventing assembly errors, increasing the number of parts and production costs, and improving productivity and quality of goods
Inactive Publication Date: 2006-05-10
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology
[0009] However, when the UV adhesive 40 is hardened by being irradiated with ultraviolet rays after being applied in a liquid form, heat is generated, causing the volume of the applied UV adhesive to change.
according to figure 2 As shown in the conventional laser beam generating device, it is difficult to prevent the volume change due to the UV adhesive 40 being applied only under the collimating lens holder 20
As a result, in the process of adjusting the position of the collimator lens holder 20 with respect to the optical axis and beam diameter and fixing the adjusted position with the UV adhesive 40, assembly errors may frequently occur due to volume changes of the UV adhesive 40
Method used
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[0036] Embodiments of the invention will now be described in detail, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. The embodiments are described in detail below to explain the present invention by referring to the figures.
[0037] Figures 3 to 5 They are respectively a front view, a side view and an exploded view of a laser beam generating device according to an embodiment of the present invention.
[0038] A laser beam generating device of a laser scanning unit according to an embodiment of the present invention includes a laser diode 100 , a collimator lens 120 , a collimator lens holder 200 , a base 300 and a supporting device 400 .
[0039] The laser diode 100 is connected to the printed circuit board 110, and irradiates a laser beam containing image information onto a photosensitive medium (not shown). The collimator lens 120 converts the laser beam emitted by the laser diode 100 into...
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The invention discloses a laser beam generating device for a laser scanning unit, comprising: a laser diode; a collimating lens used to convert the laser beam emitted by the laser diode into parallel light; a collimator lens holder on the optical axis; a base for mounting the laser diode and the collimator lens holder thereon; and a supporting device formed on the base to temporarily fix the collimator lens holder. Since the UV adhesive is supplemented by a special tool to temporarily fix the collimating lens holder in the alignment position, assembly errors are prevented even though the volume of the UV adhesive changes while hardening, thereby improving productivity and goods quality.
Description
technical field [0001] The invention relates to a laser beam generating device for a laser scanning unit. Background technique [0002] An imaging device generally includes a laser scanning unit for irradiating a laser beam on a photosensitive medium to form an electrostatic latent image. The laser scanning unit comprises laser beam generating means for generating at least one laser beam whose pattern is changed by the image information. [0003] figure 1 and 2 An example of a conventional laser beam generating device is shown. [0004] Such as figure 1 and 2 As shown, the laser beam generating device includes a laser diode 10 , a collimator lens holder 20 and a base 30 . [0005] A laser diode 10 is connected to a printed circuit board 11 to generate a laser beam. [0006] The collimator lens holder 20 is disposed on the optical axis of the laser beam irradiated from the laser diode 10, and includes therein a collimator lens 21 for converting the laser beam into para...
Claims
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IPC IPC(8): G02B26/10G03G15/04
CPCB41J2/44G02B7/025G02B26/124G03G15/0409G03G2215/0404G03G2221/1636G03G21/1647G03G21/1666G03G15/04072G03G15/0435G03G15/04G02B26/10
Inventor 李泰庚
Owner SAMSUNG ELECTRONICS CO LTD