JPS64974A - Printing device - Google Patents
Printing deviceInfo
- Publication number
- JPS64974A JPS64974A JP62155345A JP15534587A JPS64974A JP S64974 A JPS64974 A JP S64974A JP 62155345 A JP62155345 A JP 62155345A JP 15534587 A JP15534587 A JP 15534587A JP S64974 A JPS64974 A JP S64974A
- Authority
- JP
- Japan
- Prior art keywords
- laser beam
- detectors
- light intensity
- photosensitive body
- projection position
- 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
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Printer (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE:To minimize the positional deviation of a printing dot and to obtain high-quality printing by driving a state changing means according to the output of light intensity detecting means to change the projection position of a laser beam on a photosensitive body. CONSTITUTION:Light intensity detectors 22a as the light intensity detecting means for detecting the light intensity of the laser beam 7a are provided to both ends on the outside of the photosensitive body 1a of a scanning line to the photosensitive body 1a. The intensity of the light received by the detectors 22a changes with the deviation of the scanning line of the laser beam in the sub-scanning direction and the outputs from the detectors 22a change correspondingly. The outputs from the detectors 22a are amplified by an amplifier 32a and are relationally operated by a relational operating circuit 33a as a control driving means. The angle of a 2nd mirror 13a is adjusted and changed to correct the projection position of the laser beam 7a on the photosensitive body 1a to the reference projection position if the projection position of the laser beam 7a deviates from the reference position. The high-quality color printing without having color slurring, etc., is thereby executed in spite of overlap transfer in the same position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-155345A JPH01974A (en) | 1987-06-24 | printing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-155345A JPH01974A (en) | 1987-06-24 | printing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS64974A true JPS64974A (en) | 1989-01-05 |
| JPH01974A JPH01974A (en) | 1989-01-05 |
Family
ID=
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02302714A (en) * | 1989-05-17 | 1990-12-14 | Tokyo Electric Co Ltd | Optical scanner |
| US5149670A (en) * | 1990-10-26 | 1992-09-22 | Mitsubishi Denki Kabushiki Kaisha | Method for producing semiconductor light emitting device |
| US5315322A (en) * | 1990-02-21 | 1994-05-24 | Ricoh Company, Ltd. | Image forming apparatus with anti-banding implementation |
| US5359434A (en) * | 1991-03-26 | 1994-10-25 | Kabushiki Kaisha Toshiba | Scanning optical apparatus |
| JP2003094719A (en) * | 2001-09-21 | 2003-04-03 | Ricoh Co Ltd | Color imaging apparatus |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02302714A (en) * | 1989-05-17 | 1990-12-14 | Tokyo Electric Co Ltd | Optical scanner |
| US5315322A (en) * | 1990-02-21 | 1994-05-24 | Ricoh Company, Ltd. | Image forming apparatus with anti-banding implementation |
| US5149670A (en) * | 1990-10-26 | 1992-09-22 | Mitsubishi Denki Kabushiki Kaisha | Method for producing semiconductor light emitting device |
| US5359434A (en) * | 1991-03-26 | 1994-10-25 | Kabushiki Kaisha Toshiba | Scanning optical apparatus |
| JP2003094719A (en) * | 2001-09-21 | 2003-04-03 | Ricoh Co Ltd | Color imaging apparatus |
| JP4676662B2 (en) * | 2001-09-21 | 2011-04-27 | 株式会社リコー | Color image forming apparatus |
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