JPS5232327A - Slope control circuit of photographic printer - Google Patents
Slope control circuit of photographic printerInfo
- Publication number
- JPS5232327A JPS5232327A JP10764275A JP10764275A JPS5232327A JP S5232327 A JPS5232327 A JP S5232327A JP 10764275 A JP10764275 A JP 10764275A JP 10764275 A JP10764275 A JP 10764275A JP S5232327 A JPS5232327 A JP S5232327A
- Authority
- JP
- Japan
- Prior art keywords
- slope control
- control circuit
- photographic printer
- diodes
- reverse direction
- 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
- Control Of Exposure In Printing And Copying (AREA)
Abstract
PURPOSE: To provide symmetric circuits reversely operating using operational amplifiers and diodes, enable slope control in a forward or reverse direction, and perform decision of the exposure time of a negative image in a substantially negligible short time.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10764275A JPS5232327A (en) | 1975-09-05 | 1975-09-05 | Slope control circuit of photographic printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10764275A JPS5232327A (en) | 1975-09-05 | 1975-09-05 | Slope control circuit of photographic printer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5232327A true JPS5232327A (en) | 1977-03-11 |
Family
ID=14464358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10764275A Pending JPS5232327A (en) | 1975-09-05 | 1975-09-05 | Slope control circuit of photographic printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5232327A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4176160A (en) * | 1971-06-23 | 1979-11-27 | Societe De Prayon | Process for purifying a zinc sulfate solution |
JPS5756836A (en) * | 1980-09-22 | 1982-04-05 | Dainippon Screen Mfg Co Ltd | Method and device for correcting anti-reciprocity law in case of color reproduction |
JPS5789748A (en) * | 1980-11-25 | 1982-06-04 | Dainippon Screen Mfg Co Ltd | Exposure time controlling method of picture copying device |
JPS5986037A (en) * | 1982-11-08 | 1984-05-18 | Fuji Photo Film Co Ltd | Controller for amount of exposure for photographic printing |
JPS60249138A (en) * | 1984-05-25 | 1985-12-09 | Fuji Photo Film Co Ltd | Color printer system |
JPS60257441A (en) * | 1984-06-04 | 1985-12-19 | Fuji Photo Film Co Ltd | Printer system |
JPS63274824A (en) * | 1987-05-06 | 1988-11-11 | Minoru Morita | Density measuring instrument for photography |
-
1975
- 1975-09-05 JP JP10764275A patent/JPS5232327A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4176160A (en) * | 1971-06-23 | 1979-11-27 | Societe De Prayon | Process for purifying a zinc sulfate solution |
JPS5756836A (en) * | 1980-09-22 | 1982-04-05 | Dainippon Screen Mfg Co Ltd | Method and device for correcting anti-reciprocity law in case of color reproduction |
JPS5789748A (en) * | 1980-11-25 | 1982-06-04 | Dainippon Screen Mfg Co Ltd | Exposure time controlling method of picture copying device |
JPS5986037A (en) * | 1982-11-08 | 1984-05-18 | Fuji Photo Film Co Ltd | Controller for amount of exposure for photographic printing |
JPS60249138A (en) * | 1984-05-25 | 1985-12-09 | Fuji Photo Film Co Ltd | Color printer system |
JPH0554096B2 (en) * | 1984-05-25 | 1993-08-11 | Fuji Photo Film Co Ltd | |
JPS60257441A (en) * | 1984-06-04 | 1985-12-19 | Fuji Photo Film Co Ltd | Printer system |
JPH0561626B2 (en) * | 1984-06-04 | 1993-09-06 | Fuji Photo Film Co Ltd | |
JPS63274824A (en) * | 1987-05-06 | 1988-11-11 | Minoru Morita | Density measuring instrument for photography |
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