NL7712527A - Half tone of primary colour print approximating black by balancing - separates differentially filtered images and reduces dimensions of dots - Google Patents

Half tone of primary colour print approximating black by balancing - separates differentially filtered images and reduces dimensions of dots

Info

Publication number
NL7712527A
NL7712527A NL7712527A NL7712527A NL7712527A NL 7712527 A NL7712527 A NL 7712527A NL 7712527 A NL7712527 A NL 7712527A NL 7712527 A NL7712527 A NL 7712527A NL 7712527 A NL7712527 A NL 7712527A
Authority
NL
Netherlands
Prior art keywords
primary colour
half tone
dots
balancing
black
Prior art date
Application number
NL7712527A
Other languages
Dutch (nl)
Original Assignee
Triprint Pty 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 Triprint Pty Ltd filed Critical Triprint Pty Ltd
Priority to NL7712527A priority Critical patent/NL7712527A/en
Publication of NL7712527A publication Critical patent/NL7712527A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/14—Multicolour printing
    • B41M1/18—Printing one ink over another
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F3/00—Colour separation; Correction of tonal value
    • G03F3/04—Colour separation; Correction of tonal value by photographic means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F5/00—Screening processes; Screens therefor
    • G03F5/22—Screening processes; Screens therefor combining several screens; Elimination of moiré

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Color, Gradation (AREA)
  • Color Image Communication Systems (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

A primary colour print is produced in half tone, where black is approximated by balancing the primary colour components of the print. The print will only involve three primary colour processes. The density of each black component image is increased, prior to combining primary colour images. It involves separating differentially filtered images at an angle and reducing the dimensions of the dots of these images in accordance with the red, blue and yellow components. A combination of primary colour and black half tone printing plate is prepared using the image with reduced dot dimensions.
NL7712527A 1977-11-14 1977-11-14 Half tone of primary colour print approximating black by balancing - separates differentially filtered images and reduces dimensions of dots NL7712527A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7712527A NL7712527A (en) 1977-11-14 1977-11-14 Half tone of primary colour print approximating black by balancing - separates differentially filtered images and reduces dimensions of dots

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7712527A NL7712527A (en) 1977-11-14 1977-11-14 Half tone of primary colour print approximating black by balancing - separates differentially filtered images and reduces dimensions of dots

Publications (1)

Publication Number Publication Date
NL7712527A true NL7712527A (en) 1979-05-16

Family

ID=19829535

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7712527A NL7712527A (en) 1977-11-14 1977-11-14 Half tone of primary colour print approximating black by balancing - separates differentially filtered images and reduces dimensions of dots

Country Status (1)

Country Link
NL (1) NL7712527A (en)

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Legal Events

Date Code Title Description
BV The patent application has lapsed