JPH02113716U - - Google Patents
Info
- Publication number
- JPH02113716U JPH02113716U JP2174289U JP2174289U JPH02113716U JP H02113716 U JPH02113716 U JP H02113716U JP 2174289 U JP2174289 U JP 2174289U JP 2174289 U JP2174289 U JP 2174289U JP H02113716 U JPH02113716 U JP H02113716U
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- imaging optical
- light beam
- reflecting surface
- scanning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims description 10
- 238000003384 imaging method Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 2
- 108091008695 photoreceptors Proteins 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
Description
第１図ないし第３図は本考案による光学走査装
置の一実施例を示す図であり、第１図はその全体
斜視図、第２図その制御方式のブロツク図、第３
図ａは本考案を用いない場合の光束の側面模式図
、第３図ｂは本考案の実施例における光束の側面
模式図、第４図は従来の面倒れ補正方式を示す光
束の側面模式図である。
１……光源部、２……駆動装置、３……ポリゴ
ンミラー（回転多面鏡）、３ａ，３ｂ……反射面
、５……感光体、４……ｆθレンズ（第２結像光
学系）、６……同期検出器、７……面倒れ角検出
器、８……コリメートレンズ（第１結像光学系）
、９，１２……検出信号、１０……制御信号、１
１……面倒れ補正制御回路。
1 to 3 are diagrams showing an embodiment of the optical scanning device according to the present invention, in which FIG. 1 is a perspective view of the entire device, FIG. 2 is a block diagram of its control system, and FIG. 3 is a block diagram of its control system.
Figure a is a schematic side view of a light beam when the present invention is not used, Figure 3b is a schematic side view of a light beam in an embodiment of the present invention, and Figure 4 is a schematic side view of a light beam showing the conventional surface tilt correction method. It is. 1... Light source section, 2... Drive device, 3... Polygon mirror (rotating polygon mirror), 3a, 3b... Reflective surface, 5... Photoreceptor, 4... fθ lens (second imaging optical system) , 6...Synchronization detector, 7...Front tilt angle detector, 8...Collimating lens (first imaging optical system)
, 9, 12...Detection signal, 10...Control signal, 1
1...Front tilt correction control circuit.
Claims (1)
された光束を略平行光束にする第１結像光学系と
、この第１結像光学系からの光束を反射して偏向
走査する反射面を有する回転多面鏡と、前記反射
面により偏向走査された走査光束を感光体に結像
する第２結像光学系とを備えた光学走査装置にお
いて、前記反射面の面倒れ角を検出する面倒れ角
検出器と、前記第１結像光学系の位置を変化させ
る駆動装置と、前記面倒れ角検出器からの検出信
号により前記反射面の面倒れ角に応じて前記第１
結像光学系の位置を副走査方向に変化させるよう
前記駆動手段に制御信号を出力する面倒れ補正制
御回路とを備えたことを特徴とする光学走査装置
。 A light source section that emits a light beam, a first imaging optical system that converts the light beam emitted from the light source section into a substantially parallel light beam, and a reflecting surface that reflects and deflects the light beam from the first imaging optical system. and a second imaging optical system that forms an image of a scanning light beam deflected and scanned by the reflecting surface on a photoreceptor, wherein a surface tilting angle of the reflecting surface is detected. an angle detector, a drive device that changes the position of the first imaging optical system, and a drive device that changes the position of the first imaging optical system according to the surface tilt angle of the reflective surface based on a detection signal from the surface tilt angle detector.
An optical scanning device comprising: a surface tilt correction control circuit that outputs a control signal to the drive means to change the position of the imaging optical system in the sub-scanning direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2174289U JPH02113716U (en) | 1989-02-27 | 1989-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2174289U JPH02113716U (en) | 1989-02-27 | 1989-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02113716U true JPH02113716U (en) | 1990-09-12 |
Family
ID=31239240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2174289U Pending JPH02113716U (en) | 1989-02-27 | 1989-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02113716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06175055A (en) * | 1992-07-31 | 1994-06-24 | E I Du Pont De Nemours & Co | Scanning system and error correction for scanning system |
-
1989
- 1989-02-27 JP JP2174289U patent/JPH02113716U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06175055A (en) * | 1992-07-31 | 1994-06-24 | E I Du Pont De Nemours & Co | Scanning system and error correction for scanning system |
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