FIELD: processes and equipment for making printing forms for screen printing, apparatuses for screen printing.
SUBSTANCE: method for making printing forms comprises steps of melting heat sensitive material of printing forms for screen printing having film of thermosetting resin of predetermined thickness by heating thermal head for perforating holes permeable for printing ink; forming large number of shallow recesses in one side of said film. Heaters of thermal head 10 have such size that next inequalities HM > 0.6PM, HS > 0.7 PS are satisfied. Heaters are arranged at pitch PM in side of main scanning direction. Length of heaters along side of main scanning direction is equal to HM. Feed stroke at side along secondary direction of scanning is equal to PS. Length of heaters at side along secondary direction of scanning is equal to HS. Side of film opposite to its side having shallow recesses is heated due to heating thermal head 10 with output 35 mJ/mm2 or less for melting heated zone until its communication with said recesses in order to form holes permeable for printing ink.
EFFECT: possibility for thermally perforating in film individual holes permeable for typographic ink at the same output of thermal head, realization of screen printing process at using material of printing forms for screen printing containing only film of thermoplastic resin.
18 cl, 9 dwg
