JPS5249831A - Process for controlling exposure light quantity - Google Patents

Process for controlling exposure light quantity

Info

Publication number
JPS5249831A
JPS5249831A JP12516375A JP12516375A JPS5249831A JP S5249831 A JPS5249831 A JP S5249831A JP 12516375 A JP12516375 A JP 12516375A JP 12516375 A JP12516375 A JP 12516375A JP S5249831 A JPS5249831 A JP S5249831A
Authority
JP
Japan
Prior art keywords
light quantity
exposure light
controlling exposure
conversion
exposure
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
Application number
JP12516375A
Other languages
Japanese (ja)
Inventor
Kanji Tokuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP12516375A priority Critical patent/JPS5249831A/en
Priority to DE19762646748 priority patent/DE2646748A1/en
Publication of JPS5249831A publication Critical patent/JPS5249831A/en
Priority to US05/940,019 priority patent/US4206998A/en
Pending legal-status Critical Current

Links

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
    • G03B27/73—Controlling exposure by variation of spectral composition, e.g. multicolor printers
    • G03B27/735—Controlling exposure by variation of spectral composition, e.g. multicolor printers in dependence upon automatic analysis of the original

Abstract

PURPOSE: To enable the control of a proper light quantity of exposure by subjecting an electric signal which varies as a received light quantity to the logarithmic conversion, conversion corresponding to the slope control of negative densityexposure time curve, and exponential conversion order to determine the exposure light quantity.
COPYRIGHT: (C)1977,JPO&Japio
JP12516375A 1975-10-17 1975-10-17 Process for controlling exposure light quantity Pending JPS5249831A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP12516375A JPS5249831A (en) 1975-10-17 1975-10-17 Process for controlling exposure light quantity
DE19762646748 DE2646748A1 (en) 1975-10-17 1976-10-15 Automatic colour printer exposure control device - with light output being negative logarithmically converted, integrated and balanced to predetermined constant value
US05/940,019 US4206998A (en) 1975-10-17 1978-09-06 Exposure control method for an automatic color printer with slope control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12516375A JPS5249831A (en) 1975-10-17 1975-10-17 Process for controlling exposure light quantity

Publications (1)

Publication Number Publication Date
JPS5249831A true JPS5249831A (en) 1977-04-21

Family

ID=14903426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12516375A Pending JPS5249831A (en) 1975-10-17 1975-10-17 Process for controlling exposure light quantity

Country Status (2)

Country Link
JP (1) JPS5249831A (en)
DE (1) DE2646748A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5160297A (en) * 1974-09-30 1976-05-26 Siemens Ag
JPS5160296A (en) * 1974-09-30 1976-05-26 Siemens Ag KASANKABUTSUDEKAKYOKANONAJUSHIJOZAIRYO
JPS5986037A (en) * 1982-11-08 1984-05-18 Fuji Photo Film Co Ltd Controller for amount of exposure for photographic printing
JPS63293046A (en) * 1987-05-26 1988-11-30 Mitsubishi Gas Chem Co Inc Surface covered molded body

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2433772A1 (en) * 1978-08-17 1980-03-14 Kodak Pathe COLOR PHOTOGRAPHIC PRINTING APPARATUS AND METHOD FOR DETERMINING EXPOSURE TIMES

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840431A (en) * 1971-09-22 1973-06-14
JPS4929641A (en) * 1972-07-12 1974-03-16

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4840431A (en) * 1971-09-22 1973-06-14
JPS4929641A (en) * 1972-07-12 1974-03-16

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5160297A (en) * 1974-09-30 1976-05-26 Siemens Ag
JPS5160296A (en) * 1974-09-30 1976-05-26 Siemens Ag KASANKABUTSUDEKAKYOKANONAJUSHIJOZAIRYO
JPS5986037A (en) * 1982-11-08 1984-05-18 Fuji Photo Film Co Ltd Controller for amount of exposure for photographic printing
JPS63293046A (en) * 1987-05-26 1988-11-30 Mitsubishi Gas Chem Co Inc Surface covered molded body

Also Published As

Publication number Publication date
DE2646748A1 (en) 1977-04-28

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