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 Kores Manufacturing Company LifiledCriticalKores Manufacturing Company Li
Publication of CH354465ApublicationCriticalpatent/CH354465A/en
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
CH354465D1955-04-221956-04-18
Process for the production of copies on flat documents and transfer sheets for the execution of this process
CH354465A
(en)
Process for the production of diazotype copies according to the so-called semi-wet development method and transparent diazotype material for carrying out this process