JPS56116059A - Electronic copying machine - Google Patents
Electronic copying machineInfo
- Publication number
- JPS56116059A JPS56116059A JP1963180A JP1963180A JPS56116059A JP S56116059 A JPS56116059 A JP S56116059A JP 1963180 A JP1963180 A JP 1963180A JP 1963180 A JP1963180 A JP 1963180A JP S56116059 A JPS56116059 A JP S56116059A
- Authority
- JP
- Japan
- Prior art keywords
- exposure
- picture
- blank
- photoreceptor
- light
- 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)
- Exposure Or Original Feeding In Electrophotography (AREA)
Abstract
PURPOSE:To prevent picture defective even if a photoreceptor has large light hysteresis, by varying blank exposure in proportion to picture exposure. CONSTITUTION:Through the operation of plunger 10, reflector 11 moves to the solid-line position, and then part of light from light source 1 is reflected by reflector 11 to perform the blank exposure of photoreceptor 6 via the same path with picture exposure as shown by the dotted lines. An adjustment of initial proper exposure to the variance in sensitivity of photoreceptor 6 and an adjustment corresponding to fluctuations of sensitivity are made through exposure aperture 7 of in-mirror lens 8 as usual. In this case, since the blank exposure is performed via the same path with the picture exposure, varying the quantity of the picture exposure via aperture 7 varies the blank exposure in proportion to it. Therefore, there is not need to set the blank exposure much greater than the exposure of a picture light part like the conventional method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1963180A JPS56116059A (en) | 1980-02-19 | 1980-02-19 | Electronic copying machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1963180A JPS56116059A (en) | 1980-02-19 | 1980-02-19 | Electronic copying machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56116059A true JPS56116059A (en) | 1981-09-11 |
Family
ID=12004544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1963180A Pending JPS56116059A (en) | 1980-02-19 | 1980-02-19 | Electronic copying machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56116059A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6084552A (en) * | 1983-10-17 | 1985-05-13 | Canon Inc | Lighting device |
JPS6275672A (en) * | 1985-09-30 | 1987-04-07 | Ricoh Co Ltd | Copying device |
-
1980
- 1980-02-19 JP JP1963180A patent/JPS56116059A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6084552A (en) * | 1983-10-17 | 1985-05-13 | Canon Inc | Lighting device |
JPS6275672A (en) * | 1985-09-30 | 1987-04-07 | Ricoh Co Ltd | Copying device |
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