JPS57173857A - Optical beam recording device - Google Patents
Optical beam recording deviceInfo
- Publication number
- JPS57173857A JPS57173857A JP6045181A JP6045181A JPS57173857A JP S57173857 A JPS57173857 A JP S57173857A JP 6045181 A JP6045181 A JP 6045181A JP 6045181 A JP6045181 A JP 6045181A JP S57173857 A JPS57173857 A JP S57173857A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- image forming
- collimator lens
- image
- lighted
- 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)
- Mechanical Optical Scanning Systems (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Abstract
PURPOSE:To prevent a picture from becoming thin in a system by which a nonexposure part is image-developed, by varying size of an image forming spot diameter on a recording medium of an optical beam in accordance with size of an area to be image-developed. CONSTITUTION:An optical beam from a laser array 10 is deflected and scanned by an optical deflector 12 through a collimator lens 11, and its image is formed on a photosensitive drum 1 through an image forming lens 13. The laser array 10 is inclined against the optical axis of the collimator lens 11A and is installed so that a light source 10A comes to a focal position of the collimator lens 11, thererfore, a light source 10B is slightly shifted from a focal position of the collimator lens 11B, and image forming spots 15A, 15B on the photosensitive drum 1 show intensity distributions 16A, 16B, respectively. The diameter of the image forming spot becomes smaller (D1) in case when only the light source 10A has been lighted than the case when both the light sources 10A, 10B have been lighted, and the thin lines being in parallel with the main scanning direction can be made somewhat thick by inhibiting that the light source 10B is lighted.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6045181A JPS57173857A (en) | 1981-04-20 | 1981-04-20 | Optical beam recording device |
US06/360,687 US4476474A (en) | 1981-04-02 | 1982-03-22 | Dot recording apparatus |
FR8205643A FR2503042B1 (en) | 1981-04-02 | 1982-04-01 | POINT RECORDING APPARATUS |
DE19823212194 DE3212194A1 (en) | 1981-04-02 | 1982-04-01 | POINT RECORDING DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6045181A JPS57173857A (en) | 1981-04-20 | 1981-04-20 | Optical beam recording device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57173857A true JPS57173857A (en) | 1982-10-26 |
Family
ID=13142644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6045181A Pending JPS57173857A (en) | 1981-04-02 | 1981-04-20 | Optical beam recording device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57173857A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6180121A (en) * | 1984-09-27 | 1986-04-23 | Fuji Xerox Co Ltd | Optical beam recorder |
US6340982B1 (en) | 1999-10-15 | 2002-01-22 | Fujitsu Limited | Image forming apparatus and exposure device thereof |
-
1981
- 1981-04-20 JP JP6045181A patent/JPS57173857A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6180121A (en) * | 1984-09-27 | 1986-04-23 | Fuji Xerox Co Ltd | Optical beam recorder |
JPH0612383B2 (en) * | 1984-09-27 | 1994-02-16 | 富士ゼロックス株式会社 | Optical beam recorder |
US6340982B1 (en) | 1999-10-15 | 2002-01-22 | Fujitsu Limited | Image forming apparatus and exposure device thereof |
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