JPS5774751A - Laser beam printer - Google Patents
Laser beam printerInfo
- Publication number
- JPS5774751A JPS5774751A JP55150782A JP15078280A JPS5774751A JP S5774751 A JPS5774751 A JP S5774751A JP 55150782 A JP55150782 A JP 55150782A JP 15078280 A JP15078280 A JP 15078280A JP S5774751 A JPS5774751 A JP S5774751A
- Authority
- JP
- Japan
- Prior art keywords
- laser beam
- intensity
- laser
- photoreceptor
- scan
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/047—Detection, control or error compensation of scanning velocity or position
- H04N1/053—Detection, control or error compensation of scanning velocity or position in main scanning direction, e.g. synchronisation of line start or picture elements in a line
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Printer (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
- Facsimile Scanning Arrangements (AREA)
- Fax Reproducing Arrangements (AREA)
Abstract
PURPOSE:To prevent the generating of a scanning track due to a relative position shift between a laser beam and a photoreceptor, by detecting the intensity of a latent image by the laser beam and by controlling the intensity of the laser beam according to the detection result. CONSTITUTION:A laser beam 15 from a laser generator 13 is passed through a polygon reflecting mirror 17 and an f.theta lens 19 to scan on a photosensitive drum 21. A potential sensor 61 detects the potential of a latent image formed by scanning the laser beam, and according to the detected level, a laser current driver 33 is controlled throught a controller 65 to control the beam intensity. Therefore, even when the laser beam can not scan on the photoreceptor accurately owing to vibrations, etc., the generation of a scanning track is prevented by controlling the intensity of the laser beam.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55150782A JPS5774751A (en) | 1980-10-29 | 1980-10-29 | Laser beam printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55150782A JPS5774751A (en) | 1980-10-29 | 1980-10-29 | Laser beam printer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5774751A true JPS5774751A (en) | 1982-05-11 |
JPS6355708B2 JPS6355708B2 (en) | 1988-11-04 |
Family
ID=15504306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55150782A Granted JPS5774751A (en) | 1980-10-29 | 1980-10-29 | Laser beam printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5774751A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58174968A (en) * | 1982-04-07 | 1983-10-14 | Konishiroku Photo Ind Co Ltd | Method and device for optical scanning type image recording |
JPH01109371A (en) * | 1987-10-23 | 1989-04-26 | Canon Inc | Recorder |
-
1980
- 1980-10-29 JP JP55150782A patent/JPS5774751A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58174968A (en) * | 1982-04-07 | 1983-10-14 | Konishiroku Photo Ind Co Ltd | Method and device for optical scanning type image recording |
JPH01109371A (en) * | 1987-10-23 | 1989-04-26 | Canon Inc | Recorder |
Also Published As
Publication number | Publication date |
---|---|
JPS6355708B2 (en) | 1988-11-04 |
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