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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Publication of FR2271937A1publicationCriticalpatent/FR2271937A1/fr
Application grantedgrantedCritical
Publication of FR2271937B3publicationCriticalpatent/FR2271937B3/fr
B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
B41M5/00—Duplicating or marking methods; Sheet materials for use therein
B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
B41M5/0253—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet using a chemical colour-forming ink, e.g. chemical hectography
