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.)
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 filedfiledCritical
Priority to JP9608372ApriorityCriticalpatent/JPS5412820B2/ja
Priority to DE19732347708prioritypatent/DE2347708C3/de
Publication of JPS4954040ApublicationCriticalpatent/JPS4954040A/ja
Publication of JPS5412820B2publicationCriticalpatent/JPS5412820B2/ja
B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
B41M5/00—Duplicating or marking methods; Sheet materials for use therein
B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
B41M5/333—Colour developing components therefor, e.g. acidic compounds
B41M5/3333—Non-macromolecular compounds
B41M5/3335—Compounds containing phenolic or carboxylic acid groups or metal salts thereof