JPS5666877A - Exposure device of copying machine - Google Patents
Exposure device of copying machineInfo
- Publication number
- JPS5666877A JPS5666877A JP14279479A JP14279479A JPS5666877A JP S5666877 A JPS5666877 A JP S5666877A JP 14279479 A JP14279479 A JP 14279479A JP 14279479 A JP14279479 A JP 14279479A JP S5666877 A JPS5666877 A JP S5666877A
- Authority
- JP
- Japan
- Prior art keywords
- time
- mirror
- rotation
- light source
- slit
- 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
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000003534 oscillatory effect Effects 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
Abstract
PURPOSE: Not only to decrease the light source capacity but also to reduce the oscillatory influence at the time of scanning, by controlling the light emission of a flash lamp for exposing an original, in accordance with rotation of the scanning mirror.
CONSTITUTION: A reflected ray from an original 10 according to irradiation by the flash lamp 2 forms an image on the sensitive body through the scanning mirror 3 and the slit 11. Rotation of this scanning mirror 3 is detected by the slit disk 5 and the light emission time detector 6, and the lighting period of time of the lamp 2 is controlled synchronously with rotation of the mirror 4 in accordance with the time when the image formation of the sensitive body 12 by the slit 11 is moved from the point A to B through the waveform shaping circuit 7 of a monostable multivibrator, etc., the control circuit 8 and the driving circuit 9. In this way, the lamp 2 is turned off when it is not required, a necessary exposure effect can be obtained by the light source of small capacity, and the capacity of the light source can be reduced. Moreover, since the light emission time is short, generation of image blur, etc. caused by vibration of the mirror 3 is lowered.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14279479A JPS5666877A (en) | 1979-11-06 | 1979-11-06 | Exposure device of copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14279479A JPS5666877A (en) | 1979-11-06 | 1979-11-06 | Exposure device of copying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5666877A true JPS5666877A (en) | 1981-06-05 |
Family
ID=15323761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14279479A Pending JPS5666877A (en) | 1979-11-06 | 1979-11-06 | Exposure device of copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5666877A (en) |
-
1979
- 1979-11-06 JP JP14279479A patent/JPS5666877A/en active Pending
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