FR2433419A1 - Procede ameliore d'impression en couleurs - Google Patents
Procede ameliore d'impression en couleursInfo
- Publication number
- FR2433419A1 FR2433419A1 FR7823976A FR7823976A FR2433419A1 FR 2433419 A1 FR2433419 A1 FR 2433419A1 FR 7823976 A FR7823976 A FR 7823976A FR 7823976 A FR7823976 A FR 7823976A FR 2433419 A1 FR2433419 A1 FR 2433419A1
- Authority
- FR
- France
- Prior art keywords
- primary colour
- half tone
- dots
- balancing
- black
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Color Image Communication Systems (AREA)
- Facsimile Image Signal Circuits (AREA)
- Color, Gradation (AREA)
Abstract
L'invention concerne une amélioration du procédé d'impression en couleurs comportant l'emploi des composants bleu et noir combinés, des composants rouge et noir combinés, et des composants jaune et noir combinés, la simili-gravure des composants rouge, bleu et jaune ayant des points de trame de grosseur suffisamment réduite avant combinaison avec le composant noir pour que la simili-gravure soit clairement reproduite dans les couleurs désirées sur la planche. Cette amélioration consiste à augmenter la densité de l'image tramée du composant noir d'une valeur allant jusqu'à 50 % avant de la combiner avec les images tramées en couleurs primaires, ce qui améliore l'apparence de la simili-gravure en couleurs. Application à l'obtention d'une simili-gravure de bonne épaisseur.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7823976A FR2433419A1 (fr) | 1978-08-17 | 1978-08-17 | Procede ameliore d'impression en couleurs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7823976A FR2433419A1 (fr) | 1978-08-17 | 1978-08-17 | Procede ameliore d'impression en couleurs |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2433419A1 true FR2433419A1 (fr) | 1980-03-14 |
Family
ID=9211871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7823976A Pending FR2433419A1 (fr) | 1978-08-17 | 1978-08-17 | Procede ameliore d'impression en couleurs |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2433419A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE494089C (de) * | 1927-10-19 | 1930-03-11 | Rotophot Akt Ges Fuer Graphisc | Verfahren zur Herstellung von Dreifarben-Teilnegativen oder -Diapositiven fuer Dreifarben-Druckverfahren |
US2841492A (en) * | 1953-06-24 | 1958-07-01 | Mccorquodale Gresham Inc | Photochemical reproduction |
US3253917A (en) * | 1962-06-19 | 1966-05-31 | Flynn Edward Daniel | Process for three color printing and resultant prints |
US3381612A (en) * | 1964-02-15 | 1968-05-07 | Salvat Editores | Color reproducing system |
US3926117A (en) * | 1973-04-13 | 1975-12-16 | Triprint Pty Ltd | Color printing method |
-
1978
- 1978-08-17 FR FR7823976A patent/FR2433419A1/fr active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE494089C (de) * | 1927-10-19 | 1930-03-11 | Rotophot Akt Ges Fuer Graphisc | Verfahren zur Herstellung von Dreifarben-Teilnegativen oder -Diapositiven fuer Dreifarben-Druckverfahren |
US2841492A (en) * | 1953-06-24 | 1958-07-01 | Mccorquodale Gresham Inc | Photochemical reproduction |
US3253917A (en) * | 1962-06-19 | 1966-05-31 | Flynn Edward Daniel | Process for three color printing and resultant prints |
US3381612A (en) * | 1964-02-15 | 1968-05-07 | Salvat Editores | Color reproducing system |
US3926117A (en) * | 1973-04-13 | 1975-12-16 | Triprint Pty Ltd | Color printing method |
Non-Patent Citations (1)
Title |
---|
EXBK/51 * |
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