JPS559546A - Device having light source for exposure - Google Patents
Device having light source for exposureInfo
- Publication number
- JPS559546A JPS559546A JP8227578A JP8227578A JPS559546A JP S559546 A JPS559546 A JP S559546A JP 8227578 A JP8227578 A JP 8227578A JP 8227578 A JP8227578 A JP 8227578A JP S559546 A JPS559546 A JP S559546A
- Authority
- JP
- Japan
- Prior art keywords
- variable resistor
- light source
- exposure
- voltage
- controlling
- 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
- Exposure Or Original Feeding In Electrophotography (AREA)
Abstract
PURPOSE:To prevent uneven exposure in lighting, by providing means for controlling the voltage to be applied to a light source in accordance with the control amount of light source light quantity to compensate the time from start of light source lighting to arrival at the predetermined light quantity. CONSTITUTION:As means for controlling the light quantity of an exposure light source, variable resistor VR2; variable resistor VR3 for finely controlling the exposure set with variable resistor VR2; variable resistor VR1 for defining the control range by variable resistor VR2; capacity C1 for composing a delay circuit; resistors R8 to R10; and variable resistor VR4, etc. are provided, and the voltage defined with variable resistors VR1, VR2, and VR3 is applied to operation amplifier Q3, and its voltage is produced from therminal T3.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8227578A JPS559546A (en) | 1978-07-06 | 1978-07-06 | Device having light source for exposure |
GB7922040A GB2024438B (en) | 1978-06-30 | 1979-06-25 | Electrophotographic copier |
US06/053,088 US4320964A (en) | 1978-06-30 | 1979-06-28 | Image formation apparatus |
DE2954647A DE2954647C2 (en) | 1978-06-30 | 1979-06-29 | Electrophotographic copier with lamp control circuit |
DE19792926360 DE2926360A1 (en) | 1978-06-30 | 1979-06-29 | IMAGE GENERATION DEVICE |
GB08137971A GB2108687B (en) | 1978-06-30 | 1981-12-16 | Electrophotographic copier |
GB08137972A GB2108688B (en) | 1978-06-30 | 1981-12-16 | Electrophotographic copier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8227578A JPS559546A (en) | 1978-07-06 | 1978-07-06 | Device having light source for exposure |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS559546A true JPS559546A (en) | 1980-01-23 |
Family
ID=13769934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8227578A Pending JPS559546A (en) | 1978-06-30 | 1978-07-06 | Device having light source for exposure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS559546A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57181539A (en) * | 1981-04-30 | 1982-11-09 | Ricoh Co Ltd | Exposure controller for copying machine |
-
1978
- 1978-07-06 JP JP8227578A patent/JPS559546A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57181539A (en) * | 1981-04-30 | 1982-11-09 | Ricoh Co Ltd | Exposure controller for copying machine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU516448B2 (en) | Air/fuel ratio control | |
AU511342B2 (en) | Air/fuel ratio control | |
JPS53129789A (en) | Control level device | |
CA1023244A (en) | Underspeed actuator with part throttle control | |
CA1036043A (en) | Infinitely variable orifice for part throttle control | |
JPS559546A (en) | Device having light source for exposure | |
AU522505B2 (en) | Engine fuel evaporation control | |
JPS55108019A (en) | Reference voltage generator | |
JPS5247724A (en) | Camera shutter | |
JPS559548A (en) | Device having light source for exposure | |
AU534108B2 (en) | Regulator with independent feedback path filter | |
JPS559545A (en) | Exposure control device | |
JPS5548766A (en) | Dimming method of copying machine | |
JPS5572443A (en) | Standard wheel speed arithmetic unit for anti-skid controller | |
JPS52118973A (en) | Adjusting and lighting device for discharge lamp | |
JPS5612883A (en) | Control device for motor | |
JPS52141585A (en) | Variable resistor | |
JPS5294128A (en) | Exposure control systemfor flash shooting | |
JPS57118433A (en) | Digital-to-analog converter | |
AU504677B2 (en) | Control of insects with dioxinones | |
JPS54555A (en) | Automatic gain control unit | |
SU661645A1 (en) | Device for regulating image brightness at the brightness amplifier output | |
JPS53137427A (en) | Air booster with bias regulating means | |
JPS5329478A (en) | Controller for non-linear process | |
JPS5233057A (en) | Solid state current control element |