JPS5714862A - Light beam scanning type electrophotographic device - Google Patents
Light beam scanning type electrophotographic deviceInfo
- Publication number
- JPS5714862A JPS5714862A JP8870480A JP8870480A JPS5714862A JP S5714862 A JPS5714862 A JP S5714862A JP 8870480 A JP8870480 A JP 8870480A JP 8870480 A JP8870480 A JP 8870480A JP S5714862 A JPS5714862 A JP S5714862A
- Authority
- JP
- Japan
- Prior art keywords
- change
- destaticizer
- intensity
- light beam
- output
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/043—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure
- G03G15/0435—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure by introducing an optical element in the optical path, e.g. a filter
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Or Security For Electrophotography (AREA)
- Laser Beam Printer (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Abstract
PURPOSE:To obtain good latent images with virtually no influence of the change in beam intensity despite the occurrence of said change by detecting the intensity of a light beam and controlling the applied voltage of a simultaneous destaticizer in correspondence to the output thereof. CONSTITUTION:A mirror 15 is provided on the outside of an image region, and the reflected beam thereof is entered to a control circuit 17 via a beam detector 16. In the circuit 17, the applied voltage to a simultaneous destaticizer 7 is controlled by a high voltage transformer generating the high voltage to be applied to the destaticizer 7 in accordance with the photoelectric conversion output of a detector 16. Thereby, the area where the potential of a bright part hardly changes despite the change in beam intensity is increased, and the ordinary change in beam intensity is made least influential. Therefore, in spite of a change in beam output, good latent images are formed with virtually no influence thereof.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8870480A JPS5714862A (en) | 1980-06-30 | 1980-06-30 | Light beam scanning type electrophotographic device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8870480A JPS5714862A (en) | 1980-06-30 | 1980-06-30 | Light beam scanning type electrophotographic device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5714862A true JPS5714862A (en) | 1982-01-26 |
Family
ID=13950261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8870480A Pending JPS5714862A (en) | 1980-06-30 | 1980-06-30 | Light beam scanning type electrophotographic device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5714862A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59220771A (en) * | 1983-05-31 | 1984-12-12 | Canon Inc | Combination copying machine and printer |
JPS6125164A (en) * | 1984-07-13 | 1986-02-04 | Fujitsu Ltd | Printing device |
JPH0811599A (en) * | 1994-09-13 | 1996-01-16 | Tenryu Ind Co Ltd | Variable direction seat |
-
1980
- 1980-06-30 JP JP8870480A patent/JPS5714862A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59220771A (en) * | 1983-05-31 | 1984-12-12 | Canon Inc | Combination copying machine and printer |
JPS6125164A (en) * | 1984-07-13 | 1986-02-04 | Fujitsu Ltd | Printing device |
JPH0364068B2 (en) * | 1984-07-13 | 1991-10-03 | Fujitsu Ltd | |
JPH0811599A (en) * | 1994-09-13 | 1996-01-16 | Tenryu Ind Co Ltd | Variable direction seat |
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