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Priority to JP58061710ApriorityCriticalpatent/JPS59187889A/ja
Publication of JPS59187889ApublicationCriticalpatent/JPS59187889A/ja
Publication of JPH0438599B2publicationCriticalpatent/JPH0438599B2/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
B41M5/3336—Sulfur compounds, e.g. sulfones, sulfides, sulfonamides