JPS55110268A - Electrophotographic method - Google Patents
Electrophotographic methodInfo
- Publication number
- JPS55110268A JPS55110268A JP1695779A JP1695779A JPS55110268A JP S55110268 A JPS55110268 A JP S55110268A JP 1695779 A JP1695779 A JP 1695779A JP 1695779 A JP1695779 A JP 1695779A JP S55110268 A JPS55110268 A JP S55110268A
- Authority
- JP
- Japan
- Prior art keywords
- original
- images
- lamps
- latent images
- illuminance distribution
- 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
- Electrophotography Using Other Than Carlson'S Method (AREA)
Abstract
PURPOSE: To make possible the formation of the images faithful to the original and of good gradation characteristic by making the latent images of controlled gradation characteristic through exposure with the original light images scanned at the desired illuminance distribution by the use of light sources permitting changing of the illuminance distribution.
CONSTITUTION: The reflected light radiated from illumination lamps 31, 32 passes through mirrors 5, 6, lens 7, etc. and form latent images on a photosensitive drum 1. Here, the filaments of the lamps 31, 32 are placed at the ellliptical focus formed by reflecting shades 41, 42 and the other focus is placed on glass 2. The luminous intensities of the lamps are varied by changing voltage with a variable resistor or the like, whereby the illuminance distribution is changed. For example, when the original is of a hard grade, the original is so scanned that the rate of the luminous intensities of the lamps 31, 32 become of the specified value, whereby the latent images are formed. Thereby, the controlling of the latent images faithful to the original may be done and the images of good gradation characteristic may be reproduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1695779A JPS55110268A (en) | 1979-02-16 | 1979-02-16 | Electrophotographic method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1695779A JPS55110268A (en) | 1979-02-16 | 1979-02-16 | Electrophotographic method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55110268A true JPS55110268A (en) | 1980-08-25 |
Family
ID=11930585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1695779A Pending JPS55110268A (en) | 1979-02-16 | 1979-02-16 | Electrophotographic method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55110268A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0478519U (en) * | 1990-11-16 | 1992-07-08 |
-
1979
- 1979-02-16 JP JP1695779A patent/JPS55110268A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0478519U (en) * | 1990-11-16 | 1992-07-08 |
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