FR1546337A - Appareil de commande photoélectrique de synchronisation pour tireuses ou agrandisseurs photographiques - Google Patents

Appareil de commande photoélectrique de synchronisation pour tireuses ou agrandisseurs photographiques

Info

Publication number
FR1546337A
FR1546337A FR130948A FR130948A FR1546337A FR 1546337 A FR1546337 A FR 1546337A FR 130948 A FR130948 A FR 130948A FR 130948 A FR130948 A FR 130948A FR 1546337 A FR1546337 A FR 1546337A
Authority
FR
France
Prior art keywords
enlargers
control device
synchronization control
photographic printers
photoelectric
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
Application number
FR130948A
Other languages
English (en)
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.)
Pavelle Ltd
Original Assignee
Pavelle 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
Priority claimed from GB54404/66A external-priority patent/GB1150177A/en
Application filed by Pavelle Ltd filed Critical Pavelle Ltd
Priority to FR130948A priority Critical patent/FR1546337A/fr
Application granted granted Critical
Publication of FR1546337A publication Critical patent/FR1546337A/fr
Expired 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
    • G03B27/80—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus in dependence upon automatic analysis of the original
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J1/4209—Photoelectric exposure meters for determining the exposure time in recording or reproducing
    • G01J1/4219—Photoelectric exposure meters for determining the exposure time in recording or reproducing specially adapted for enlargers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28—Modifications for introducing a time delay before switching
    • H03K17/288—Modifications for introducing a time delay before switching in tube switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
FR130948A 1966-12-05 1967-12-05 Appareil de commande photoélectrique de synchronisation pour tireuses ou agrandisseurs photographiques Expired FR1546337A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR130948A FR1546337A (fr) 1966-12-05 1967-12-05 Appareil de commande photoélectrique de synchronisation pour tireuses ou agrandisseurs photographiques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB54404/66A GB1150177A (en) 1966-12-05 1966-12-05 Photoelectric Timing Control Apparatus in or for Photographic Printers or Enlargers.
FR130948A FR1546337A (fr) 1966-12-05 1967-12-05 Appareil de commande photoélectrique de synchronisation pour tireuses ou agrandisseurs photographiques

Publications (1)

Publication Number Publication Date
FR1546337A true FR1546337A (fr) 1968-11-15

Family

ID=26181374

Family Applications (1)

Application Number Title Priority Date Filing Date
FR130948A Expired FR1546337A (fr) 1966-12-05 1967-12-05 Appareil de commande photoélectrique de synchronisation pour tireuses ou agrandisseurs photographiques

Country Status (1)

Country Link
FR (1) FR1546337A (fr)

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