JPH0444619U

JPH0444619U -

Info

Publication number: JPH0444619U
Application number: JP8545890U
Authority: JP
Priority date: 1990-08-14
Filing date: 1990-08-14
Publication date: 1992-04-15
Anticipated expiration: 2005-08-14
Also published as: JP2539982Y2

Description

[Brief explanation of drawings]

第１図はこの考案の光走査装置の実施例１が装
着されたレーザスキヤニングユニツトを示す斜視
図、第２図はこの考案の光走査装置の実施例１を
示す一部断面を有する側面図、第３図は実施例１
のポリゴンミラーを示す平面図、第４図は実施例
１のポリゴンミラーの製造装置を示す図、第５図
はこの考案の光走査装置の実施例２を示す一部断
面を有する側面図、第６図は実施例２のポリゴン
ミラーの平面図、第７図は別のポリゴンミラーを
示す平面図である。１……レーザスキヤニングユニツト、３……光
走査装置、１０……駆動モータ、１１……回転軸
、１２……支持板、１３……取付基準面、１４…
…板ばね、１５……ポリゴンミラー、１６，１７
……凸状部材、１８……反射面。 FIG. 1 is a perspective view showing a laser scanning unit equipped with a first embodiment of the optical scanning device of this invention, and FIG. 2 is a side view with a partial cross section showing the first embodiment of the optical scanning device of this invention. , FIG. 3 is Example 1
FIG. 4 is a plan view showing a polygon mirror manufacturing apparatus according to the first embodiment, FIG. 5 is a partially sectional side view showing a second embodiment of the optical scanning device of this invention, FIG. 6 is a plan view of the polygon mirror of Example 2, and FIG. 7 is a plan view showing another polygon mirror. DESCRIPTION OF SYMBOLS 1... Laser scanning unit, 3... Optical scanning device, 10... Drive motor, 11... Rotating shaft, 12... Support plate, 13... Mounting reference surface, 14...
...Plate spring, 15...Polygon mirror, 16, 17
... Convex member, 18 ... Reflective surface.

Claims

[Claims for Utility Model Registration] 1. A rotating polygon mirror 15 made of synthetic resin that scans a laser beam L while being rotated around a rotation axis 11;
In an optical scanning device having a driving means 10 for rotating a rotating shaft 11, convex members 16 and 17 are provided on one surface and the other surface of a rotating polygon mirror 15 perpendicular to the rotating shaft 11, and are attached to the rotating shaft 11. An optical scanning device characterized in that the convex members 16 and 17 are pressed by the pressing means 12 and 14. 2. The optical scanning device according to claim 1, wherein the convex members 16 and 17 are arranged at corresponding positions on one surface and the other surface with the rotation axis 11 as the center. 3. The optical scanning device according to claim 1 or 2, wherein the convex members 16 and 17 are arranged at first to third positions with the rotation axis 11 as the center. 4 The laser beam L rotates around the rotation axis 11.
In an optical scanning device that has a rotating polygon mirror 115 made of synthetic resin for scanning, a driving means 110 for rotating a rotating shaft 111, and a mounting reference surface 113 for arranging the rotating polygon mirror 115 in the device body, the mounting reference An optical scanning device characterized in that a convex member 117 is provided on a surface 113, and a rotating polygon mirror 115 is pressed by a pressing means 114 attached to a rotating shaft 111. 5. The optical scanning device according to claim 4, wherein the convex members 117 are arranged point-symmetrically about the rotation axis 111. 6. The optical scanning device according to claim 4 or 5, wherein the convex member 117 is arranged at first to third positions with the rotation axis 111 as the center.