Patent ID: 6276272
Filing Date: 2001-08-21
Classification: B41K

Abstract:
A stamp plate producing apparatus for producing a stamp plate, the stamp plate made from a porous base plate having a stamp surface on which an ink permeable non-melted portion and an ink impermeable melted-solidified portion are formed, the stamp plate producing apparatus comprising a thermal head with a plurality of dot heating elements, a portion of the thermal head contacting the stamp plate at a contact point on one surface of the porous base plate and selectively heating and melting the surface of the porous base plate, wherein said plurality of dot heating elements are arranged on the thermal head with an arranging pitch and each dot heating element has a predetermined size in both a primary scanning direction defined by the dot heating elements of the thermal head and a secondary scanning direction transverse to the primary scanning direction and the predetermined size is set in a range of 70%-130% of the arranging pitch.