JPH0236948B2 - - Google Patents
Info
- Publication number
- JPH0236948B2 JPH0236948B2 JP54143949A JP14394979A JPH0236948B2 JP H0236948 B2 JPH0236948 B2 JP H0236948B2 JP 54143949 A JP54143949 A JP 54143949A JP 14394979 A JP14394979 A JP 14394979A JP H0236948 B2 JPH0236948 B2 JP H0236948B2
- Authority
- JP
- Japan
- Prior art keywords
- original
- document
- color
- density
- bias voltage
- 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 27
- 230000003595 spectral effect Effects 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 description 6
- 108091008695 photoreceptors Proteins 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 102100040678 Programmed cell death protein 1 Human genes 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229930091051 Arenine Natural products 0.000 description 1
- 101710089372 Programmed cell death protein 1 Proteins 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Landscapes
- Control Of Exposure In Printing And Copying (AREA)
- Control Or Security For Electrophotography (AREA)
- Developing For Electrophotography (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14394979A JPS5667856A (en) | 1979-11-07 | 1979-11-07 | Ground color detector of original in copying machine |
DE3040366A DE3040366C2 (de) | 1979-10-29 | 1980-10-25 | Einrichtung zum Regeln der Belichtung oder Entwicklung in einem Kopiergerät beim Herstellen von Kopien mit weißem Untergrund von farbigen Vorlagen |
US06/200,977 US4372674A (en) | 1979-10-29 | 1980-10-27 | Copying machine having detectors for the background color and density of the original |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14394979A JPS5667856A (en) | 1979-11-07 | 1979-11-07 | Ground color detector of original in copying machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5667856A JPS5667856A (en) | 1981-06-08 |
JPH0236948B2 true JPH0236948B2 (ko) | 1990-08-21 |
Family
ID=15350791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14394979A Granted JPS5667856A (en) | 1979-10-29 | 1979-11-07 | Ground color detector of original in copying machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5667856A (ko) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58118662A (ja) * | 1982-01-08 | 1983-07-14 | Ricoh Co Ltd | 画像制御装置 |
JPS59135482A (ja) * | 1983-01-22 | 1984-08-03 | Canon Inc | 画像形成装置 |
JPS6010268A (ja) * | 1983-06-30 | 1985-01-19 | Canon Inc | 像形成装置 |
JPS6010269A (ja) * | 1983-06-30 | 1985-01-19 | Canon Inc | 像形成装置 |
JPS6010267A (ja) * | 1983-06-30 | 1985-01-19 | Canon Inc | 像形成装置 |
JPS60112058A (ja) * | 1983-11-22 | 1985-06-18 | Matsushita Electric Ind Co Ltd | 電子写真複写機 |
-
1979
- 1979-11-07 JP JP14394979A patent/JPS5667856A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5667856A (en) | 1981-06-08 |
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