JPS5767926A - Automatic selector for exposure reference value of color printer - Google Patents
Automatic selector for exposure reference value of color printerInfo
- Publication number
- JPS5767926A JPS5767926A JP14487780A JP14487780A JPS5767926A JP S5767926 A JPS5767926 A JP S5767926A JP 14487780 A JP14487780 A JP 14487780A JP 14487780 A JP14487780 A JP 14487780A JP S5767926 A JPS5767926 A JP S5767926A
- Authority
- JP
- Japan
- Prior art keywords
- exposure
- key
- density
- reference value
- 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.)
- Pending
Links
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Exposure In Printing And Copying (AREA)
- Projection-Type Copiers In General (AREA)
Abstract
PURPOSE:To perform not only an exposure operation in a short time but to eliminate the waste of the photographic paper caused by misoperation, by securing an automatically find-out of the exposure reference value by previously supplyng an input to an external recording means of a CPU. CONSTITUTION:A test exposure using a reference negative is previously supplied to an external means 6 of a CPU5 according to a prescribed procedure. Thus a density component voltage generating circuit 7 pushes a density key D(-3) at the 1st test exposure and according to D(-3), Y(N), M(N) and C(N) respectively. Then resistances DR1-DR4 formed by a combination among corresponding switches DS1- DS4 are connected to the input of an amplifier 9. Thus the density component voltage VD corresponding to a density key(-3) is produced at the output of the amplifier 9 based on the relation between the voltage E0 and a resistance R2. Also the voltage VY, VM and VC which are used as the exposure standards are produced to be compared with the exposure reference for the yellow key Y(i), magenta key M(i) and cyanogen key C(i) respectively.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14487780A JPS5767926A (en) | 1980-10-16 | 1980-10-16 | Automatic selector for exposure reference value of color printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14487780A JPS5767926A (en) | 1980-10-16 | 1980-10-16 | Automatic selector for exposure reference value of color printer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5767926A true JPS5767926A (en) | 1982-04-24 |
Family
ID=15372453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14487780A Pending JPS5767926A (en) | 1980-10-16 | 1980-10-16 | Automatic selector for exposure reference value of color printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5767926A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59174828A (en) * | 1983-03-24 | 1984-10-03 | Noritsu Kenkyu Center:Kk | Setting method of exposure condition of color printer |
US4576470A (en) * | 1982-09-16 | 1986-03-18 | Minolta Camera Kabushiki Kaisha | Enlarger for use in photography |
JPS6285233A (en) * | 1985-10-09 | 1987-04-18 | Fuji Photo Film Co Ltd | Exposure quantity correcting method for photographic printing |
JPS63234238A (en) * | 1987-03-20 | 1988-09-29 | Noritsu Kenkyu Center:Kk | Automatic setting up method for photographic printing process device |
JPH01116632A (en) * | 1987-10-30 | 1989-05-09 | Fuji Photo Film Co Ltd | Input method for exposure condition data |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5059034A (en) * | 1973-09-24 | 1975-05-22 |
-
1980
- 1980-10-16 JP JP14487780A patent/JPS5767926A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5059034A (en) * | 1973-09-24 | 1975-05-22 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4576470A (en) * | 1982-09-16 | 1986-03-18 | Minolta Camera Kabushiki Kaisha | Enlarger for use in photography |
JPS59174828A (en) * | 1983-03-24 | 1984-10-03 | Noritsu Kenkyu Center:Kk | Setting method of exposure condition of color printer |
JPS6285233A (en) * | 1985-10-09 | 1987-04-18 | Fuji Photo Film Co Ltd | Exposure quantity correcting method for photographic printing |
JPS63234238A (en) * | 1987-03-20 | 1988-09-29 | Noritsu Kenkyu Center:Kk | Automatic setting up method for photographic printing process device |
JPH01116632A (en) * | 1987-10-30 | 1989-05-09 | Fuji Photo Film Co Ltd | Input method for exposure condition data |
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