FR2403581A1 - Procede et dispositif de copie photographique - Google Patents

Procede et dispositif de copie photographique

Info

Publication number
FR2403581A1
FR2403581A1 FR7826815A FR7826815A FR2403581A1 FR 2403581 A1 FR2403581 A1 FR 2403581A1 FR 7826815 A FR7826815 A FR 7826815A FR 7826815 A FR7826815 A FR 7826815A FR 2403581 A1 FR2403581 A1 FR 2403581A1
Authority
FR
France
Prior art keywords
photosensitive material
exposing
copying method
slope
photographic copying
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.)
Withdrawn
Application number
FR7826815A
Other languages
English (en)
Inventor
Thomas A Svatek
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.)
Polaroid Corp
Original Assignee
Polaroid Corp
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 Polaroid Corp filed Critical Polaroid Corp
Publication of FR2403581A1 publication Critical patent/FR2403581A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/02—Sensitometric processes, e.g. determining sensitivity, colour sensitivity, gradation, graininess, density; Making sensitometric wedges
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Cameras Adapted For Combination With Other Photographic Or Optical Apparatuses (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Projection-Type Copiers In General (AREA)

Abstract

Procédé pour effectuer une photographie en utilisant un matériau photosensible possédant une pente de courbe caractéristique H et D sensiblement supérieure à 1, en exposant ce matériau à une scène naturelle et, ensuite, développer ce matériau pour réaliser une image visible. Il comprend l'étape consistant à exposer ledit matériau photosensible à l'éclairage de ladite scène pendant un intervalle de temps total de durée suffisamment courte pour effectuer une réduction sensible de la pente de la courbe H et D dudit matériau photosensible. Application à la copie de diapositives et d'épreuves photographiques.
FR7826815A 1977-09-19 1978-09-19 Procede et dispositif de copie photographique Withdrawn FR2403581A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83468577A 1977-09-19 1977-09-19
US91421978A 1978-06-09 1978-06-09

Publications (1)

Publication Number Publication Date
FR2403581A1 true FR2403581A1 (fr) 1979-04-13

Family

ID=27125722

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7826815A Withdrawn FR2403581A1 (fr) 1977-09-19 1978-09-19 Procede et dispositif de copie photographique

Country Status (5)

Country Link
JP (1) JPS54109433A (fr)
DE (1) DE2840735A1 (fr)
FR (1) FR2403581A1 (fr)
GB (1) GB2004386A (fr)
IT (1) IT1100805B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5570833A (en) * 1978-11-22 1980-05-28 Fuji Photo Optical Co Ltd Color correcting device of camera
JPS6177838A (ja) * 1984-09-26 1986-04-21 Fuji Photo Film Co Ltd 写真焼付装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE715696C (de) * 1940-07-10 1942-01-06 Tobis Tonbild Syndikat Ag Verfahren und Vorrichtung zum Herstellen von photographischen Keilen, insbesondere mit Ultrakurzzeitbelichtung
DE1004042B (de) * 1954-06-22 1957-03-07 Agfa Ag Verfahren zur Beeinflussung der Gradation einer lichtempfindlichen Schicht beim Kopieren
DE1016560B (de) * 1955-09-07 1957-09-26 Agfa Ag Verfahren und Vorrichtung zur Herstellung von Kopien und Vergroesserungen mit verschiedenen Gammawerten auf dem gleichen photographischen Material
CH379282A (de) * 1958-06-19 1964-06-30 Agfa Ag Verfahren zur Verbesserung der Tonwertwiedergabe bei der Herstellung von Kontaktkopien oder Vergrösserungen
DE1497464A1 (de) * 1966-02-09 1969-07-10 Elbe Kamera Gmbh Verfahren zur kontrastabhaengigen Steuerung der Belichtung bei Kopiergeraeten
GB1320455A (en) * 1970-03-06 1973-06-13 Loewe Opta Gmbh Apparatus for regulating the light energy decay characteristic of a pulsed flash device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE715696C (de) * 1940-07-10 1942-01-06 Tobis Tonbild Syndikat Ag Verfahren und Vorrichtung zum Herstellen von photographischen Keilen, insbesondere mit Ultrakurzzeitbelichtung
DE1004042B (de) * 1954-06-22 1957-03-07 Agfa Ag Verfahren zur Beeinflussung der Gradation einer lichtempfindlichen Schicht beim Kopieren
DE1016560B (de) * 1955-09-07 1957-09-26 Agfa Ag Verfahren und Vorrichtung zur Herstellung von Kopien und Vergroesserungen mit verschiedenen Gammawerten auf dem gleichen photographischen Material
CH379282A (de) * 1958-06-19 1964-06-30 Agfa Ag Verfahren zur Verbesserung der Tonwertwiedergabe bei der Herstellung von Kontaktkopien oder Vergrösserungen
DE1497464A1 (de) * 1966-02-09 1969-07-10 Elbe Kamera Gmbh Verfahren zur kontrastabhaengigen Steuerung der Belichtung bei Kopiergeraeten
GB1320455A (en) * 1970-03-06 1973-06-13 Loewe Opta Gmbh Apparatus for regulating the light energy decay characteristic of a pulsed flash device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/71 *

Also Published As

Publication number Publication date
JPS54109433A (en) 1979-08-28
IT1100805B (it) 1985-09-28
IT7827712A0 (it) 1978-09-15
GB2004386A (en) 1979-03-28
DE2840735A1 (de) 1979-04-05

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Legal Events

Date Code Title Description
ST Notification of lapse