JPS559545A - Exposure control device - Google Patents
Exposure control deviceInfo
- Publication number
- JPS559545A JPS559545A JP8227478A JP8227478A JPS559545A JP S559545 A JPS559545 A JP S559545A JP 8227478 A JP8227478 A JP 8227478A JP 8227478 A JP8227478 A JP 8227478A JP S559545 A JPS559545 A JP S559545A
- Authority
- JP
- Japan
- Prior art keywords
- light quantity
- variable resistor
- exposure
- time
- control
- 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.)
- Granted
Links
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Control Of Exposure In Printing And Copying (AREA)
Abstract
PURPOSE:To facilitate light quantity control as well as to prevent control range from impairing due to fine control, by providing a corrector capable of correcting the time from start of exposure lamp lighting to arrival at the predetermined light quantity. CONSTITUTION:Variable resistor VR2 for controlling the light quantity of an exposure is arranged on the operation panel of a copier as an exposure dial. Variable resistor VR3 for changing the light quantity of center of control range, while keeping the light quantity range contrllable with VR2, is also disposed on the panel. The high voltage for lighting the lamp at the rating value is applied during the time of time constant defined by resistor R8, variable resistor VR4, and capacity C1, but the time from start of exposure lamp lighting to arrival at the predetermined light quantity can be corrected by controlling variable resistor VR4.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8227478A JPS559545A (en) | 1978-07-06 | 1978-07-06 | Exposure control device |
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 |
DE19792926360 DE2926360A1 (en) | 1978-06-30 | 1979-06-29 | IMAGE GENERATION DEVICE |
DE2954647A DE2954647C2 (en) | 1978-06-30 | 1979-06-29 | Electrophotographic copier with lamp control circuit |
GB08137972A GB2108688B (en) | 1978-06-30 | 1981-12-16 | Electrophotographic copier |
GB08137971A GB2108687B (en) | 1978-06-30 | 1981-12-16 | Electrophotographic copier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8227478A JPS559545A (en) | 1978-07-06 | 1978-07-06 | Exposure control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS559545A true JPS559545A (en) | 1980-01-23 |
JPH0210932B2 JPH0210932B2 (en) | 1990-03-12 |
Family
ID=13769902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8227478A Granted JPS559545A (en) | 1978-06-30 | 1978-07-06 | Exposure control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS559545A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56132362A (en) * | 1980-03-19 | 1981-10-16 | Ricoh Co Ltd | Original lighting device for copying machine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04111427U (en) * | 1991-03-12 | 1992-09-28 | 河西工業株式会社 | Laminated structure of sound absorbing material |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5050343U (en) * | 1973-09-05 | 1975-05-16 | ||
JPS5190180A (en) * | 1975-02-05 | 1976-08-07 | ||
JPS5223572A (en) * | 1975-08-15 | 1977-02-22 | Sumitomo Chem Co Ltd | Folded screen type reactor |
JPS5326132A (en) * | 1976-08-23 | 1978-03-10 | Mita Industrial Co Ltd | Exposure device in copying machine |
JPS5328428A (en) * | 1976-08-24 | 1978-03-16 | Ricoh Co Ltd | Light control for electrophoto graphic copier |
JPS5726663U (en) * | 1980-07-22 | 1982-02-12 |
-
1978
- 1978-07-06 JP JP8227478A patent/JPS559545A/en active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5050343U (en) * | 1973-09-05 | 1975-05-16 | ||
JPS5190180A (en) * | 1975-02-05 | 1976-08-07 | ||
JPS5223572A (en) * | 1975-08-15 | 1977-02-22 | Sumitomo Chem Co Ltd | Folded screen type reactor |
JPS5326132A (en) * | 1976-08-23 | 1978-03-10 | Mita Industrial Co Ltd | Exposure device in copying machine |
JPS5328428A (en) * | 1976-08-24 | 1978-03-16 | Ricoh Co Ltd | Light control for electrophoto graphic copier |
JPS5726663U (en) * | 1980-07-22 | 1982-02-12 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56132362A (en) * | 1980-03-19 | 1981-10-16 | Ricoh Co Ltd | Original lighting device for copying machine |
Also Published As
Publication number | Publication date |
---|---|
JPH0210932B2 (en) | 1990-03-12 |
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