JPS6463917A - Optical scanning device - Google Patents
Optical scanning deviceInfo
- Publication number
- JPS6463917A JPS6463917A JP62221537A JP22153787A JPS6463917A JP S6463917 A JPS6463917 A JP S6463917A JP 62221537 A JP62221537 A JP 62221537A JP 22153787 A JP22153787 A JP 22153787A JP S6463917 A JPS6463917 A JP S6463917A
- Authority
- JP
- Japan
- Prior art keywords
- scanning
- previously measured
- light
- line pitch
- irregularity
- 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
Landscapes
- Mechanical Optical Scanning Systems (AREA)
- Facsimile Scanning Arrangements (AREA)
- Fax Reproducing Arrangements (AREA)
Abstract
PURPOSE:To reduce the distortion of an image by deflecting light according to previously measured irregularity in scanning line pitch and correcting dynamic scanning line pitch irregularity due to the tilting of the axis of to rotary polygon mirror at the time of rotation by an optical modulator in addition to the previously measured scanning line pitch irregularity. CONSTITUTION:This optical scanning device is constituted while including a photodetector 7 which is arranged nearby the prescribed scanning start position of scanning light and detects the position of the scanning light on the photodetection surface, a static error storage circuit 8 for storing the quantity of a position shift from the target scan of scanning light in each surface of the previously measured rotary polygon mirror 4, and a controller 3 which outputs an optical modulator driving signal for correcting the position shift from the target scanning position of the scanning light with the output of the static error storage circuit 8 and the output of the detector 7. Consequently, a dynamic error is removed and the distortion of an image is reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62221537A JPS6463917A (en) | 1987-09-03 | 1987-09-03 | Optical scanning device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62221537A JPS6463917A (en) | 1987-09-03 | 1987-09-03 | Optical scanning device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6463917A true JPS6463917A (en) | 1989-03-09 |
Family
ID=16768274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62221537A Pending JPS6463917A (en) | 1987-09-03 | 1987-09-03 | Optical scanning device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6463917A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5245181A (en) * | 1991-06-24 | 1993-09-14 | Dainippon Screen Mfg. Co., Ltd. | Method and apparatus of detecting deviation of scanning line of light beam |
-
1987
- 1987-09-03 JP JP62221537A patent/JPS6463917A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5245181A (en) * | 1991-06-24 | 1993-09-14 | Dainippon Screen Mfg. Co., Ltd. | Method and apparatus of detecting deviation of scanning line of light beam |
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