WO1987005408A1 - Lumiere de test - Google Patents

Lumiere de test Download PDF

Info

Publication number
WO1987005408A1
WO1987005408A1 PCT/US1987/000422 US8700422W WO8705408A1 WO 1987005408 A1 WO1987005408 A1 WO 1987005408A1 US 8700422 W US8700422 W US 8700422W WO 8705408 A1 WO8705408 A1 WO 8705408A1
Authority
WO
WIPO (PCT)
Prior art keywords
color
light
illumination
exposure
amount
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.)
Ceased
Application number
PCT/US1987/000422
Other languages
English (en)
Inventor
Frank A. Hull
H. Brent Archer
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.)
Chesley F Carlson Co
Original Assignee
Chesley F Carlson Co
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 Chesley F Carlson Co filed Critical Chesley F Carlson Co
Publication of WO1987005408A1 publication Critical patent/WO1987005408A1/fr
Anticipated expiration legal-status Critical
Ceased 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

Definitions

  • Figure 3 shows the cross hatched color grids which are used to determine recipes for recreating colors. Each grid may be created from two of the three primary colors from 0.0 to 2.0 density.
  • Figure 4 shows the operator console and various control keys used in connection with the invention.
  • the red light will give the cyan color and the green will produce magenta.
  • the center may be excised from each color wedge.
  • the actual color that is to be reproduced may be determined by simply .laying the appro ⁇ priate grid over the color to be proofed. The grid is shifted until the best color match is obtained between the original and grid. Assuming a maximum exposure of 250 to create the grid if the color match occurs at .2 red and .4 blue, cc values of 230 red and 210 blue can be used for the recipe for the actual exposure for proofing purposes. Other methods will be obvious to those skilled in the art. For example, a small hole may be punched in the color sample to be matched.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

Une lumière multicolore (30) à réglage par phase sert à tester des couleurs avant qu'un travail soit effectué sur une presse typographique. La manipulation modulée de l'intensité spectrale de la lumière rouge, de la lumière verte et de la lumière bleue (32-34, 41, 42), telles qu'elles sont exposées à travers différents supports à plat, permet d'obtenir des couleurs spécifiques dans le matériau d'épreuve. Le paramètre ou les données d'exposition appropriés sont introduits par l'intermédiaire d'un clavier dans une unité de commande informatisée, qui comprend un certain nombre de mémoires de traitement de l'impression, dont chacune accepte un certain nombre de supports à plat ou de films en fournissant une réponse spécifique à une condition d'impression donnée, ce qui permet le stockage de modifications et de conditions fréquemment utilisées, selon la demande. La palette des couleurs est également programmée par l'opérateur. Grâce à cette programmation, la combinaison des valeurs spectrales résulte en une valeur spectrale combinée spécifique, destinée à créer une couleur spécifique dans l'épreuve. Grâce à cette technique, les expositions de couleur cyan, de couleur magenta, de couleur jaune et de couleur noir n'ont besoin chacune que d'une seule exposition pour donner les résultats des tests de la position et de l'acceptation de l'agencement des couleurs. Des expositions additionnelles peuvent être effectuées pour les repères de rogne et pour les lignes de coupe et de pliage, ainsi que pour créer une couleur de fond.
PCT/US1987/000422 1986-02-28 1987-02-27 Lumiere de test Ceased WO1987005408A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US83489786A 1986-02-28 1986-02-28
US834,897 1986-02-28

Publications (1)

Publication Number Publication Date
WO1987005408A1 true WO1987005408A1 (fr) 1987-09-11

Family

ID=25268075

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1987/000422 Ceased WO1987005408A1 (fr) 1986-02-28 1987-02-27 Lumiere de test

Country Status (2)

Country Link
EP (1) EP0258416A4 (fr)
WO (1) WO1987005408A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657770A3 (fr) * 1993-12-09 1995-08-30 Thomas Boehme Système de dosage de la lumière d'exposition dans la fabrication d'agrandissements pour la photographie en couleur.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071809A (en) * 1974-11-18 1978-01-31 Weiss J M Apparatus for synthesizing of colors
US4387985A (en) * 1981-10-05 1983-06-14 Itek Corporation Unique copyboard having unique light attenuator
US4469437A (en) * 1982-03-02 1984-09-04 Minolta Camera Kabushiki Kaisha Light measurement and light control data calculation device for a photographic enlarger
US4551011A (en) * 1981-12-11 1985-11-05 Minolta Camera Kabushiki Kaisha Light source for exposure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071809A (en) * 1974-11-18 1978-01-31 Weiss J M Apparatus for synthesizing of colors
US4387985A (en) * 1981-10-05 1983-06-14 Itek Corporation Unique copyboard having unique light attenuator
US4551011A (en) * 1981-12-11 1985-11-05 Minolta Camera Kabushiki Kaisha Light source for exposure
US4469437A (en) * 1982-03-02 1984-09-04 Minolta Camera Kabushiki Kaisha Light measurement and light control data calculation device for a photographic enlarger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0258416A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657770A3 (fr) * 1993-12-09 1995-08-30 Thomas Boehme Système de dosage de la lumière d'exposition dans la fabrication d'agrandissements pour la photographie en couleur.

Also Published As

Publication number Publication date
EP0258416A4 (fr) 1988-08-17
EP0258416A1 (fr) 1988-03-09

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