JPS55110271A - Electrophotographic apparatus - Google Patents
Electrophotographic apparatusInfo
- Publication number
- JPS55110271A JPS55110271A JP1880379A JP1880379A JPS55110271A JP S55110271 A JPS55110271 A JP S55110271A JP 1880379 A JP1880379 A JP 1880379A JP 1880379 A JP1880379 A JP 1880379A JP S55110271 A JPS55110271 A JP S55110271A
- Authority
- JP
- Japan
- Prior art keywords
- iris
- optical path
- light
- exposure
- photoreceptor
- 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
- Optical Systems Of Projection Type Copiers (AREA)
Abstract
PURPOSE: To obtain the apparatus which is capable of saving toner amount, easing the burden of cleaning and sustaining the formation of good images by performing blank exposure to be radiated at the time other than recording operation through radiation of the optimum quantity of light to photoreceptor at the preset aperture value.
CONSTITUTION: The reflected light from the original 2 is reflected by the mirror of a lens 5, passes through the slit 8' of a corona discharger 8 and forms latent images on the photoreceptor. An iris 13 which may be put into and out from the optical path of the lens 5 bent to V-form is provided. The iris 13 is made turnable about an axis 14. In the case of blank exposure, the iris 13 is forced into the optical path and a separately provided knob is operated to set the vignetting amount of the optical path at the specified aperture value through turning of the axis 14. In the case of ordinary exposure, the restraint of the iris 13 is released by moving a moving plate 23 in the F' direction. By making the quantity of light of blank exposure adequate, the toner amount may be saved, cleaning eased and the good image formation sustained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1880379A JPS55110271A (en) | 1979-02-19 | 1979-02-19 | Electrophotographic apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1880379A JPS55110271A (en) | 1979-02-19 | 1979-02-19 | Electrophotographic apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55110271A true JPS55110271A (en) | 1980-08-25 |
Family
ID=11981741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1880379A Pending JPS55110271A (en) | 1979-02-19 | 1979-02-19 | Electrophotographic apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55110271A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0743311U (en) * | 1990-12-21 | 1995-08-22 | 清次郎 一見 | Sound reproduction auxiliary device for pillow and sound reproduction pillow |
-
1979
- 1979-02-19 JP JP1880379A patent/JPS55110271A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0743311U (en) * | 1990-12-21 | 1995-08-22 | 清次郎 一見 | Sound reproduction auxiliary device for pillow and sound reproduction pillow |
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