Transfer roll with ceramic-fluorocarbon coating containing cylindrical ink holes with round, beveled entrances

A transfer roll for transferring ink or like mediums from ink holes formed therein to a print roll or material comprising:

• (a) a metal substrate;
• (b) an outer coating of a ceramic-fluorocarbon mixture covering said substrate, said ceramic-fluorocarbon mixture coating containing a fluorocarbon polymer homogeneously dispersed throughout the entire thickness of the outer coating, thereby lowering the dyne level to greatly enhance ink transfer from the transfer roll to the print hole by providing a precise distribution of ink to the print roll and improving the durability, and corrosion resistance of the transfer roll;
• and
• (c) micron-sized pulsed laser beam ink holes formed radially in the outer surface of said outer coating, each of said ink holes having a hemispherical bottom, a generally cylindrical intermediate portion and a rounded, beveled entryway, the thickness of the ceramic-fluorocarbon mixture coating being substantially greater than the depth of the ink holes.

A transfer roll for transferring ink or like medium from ink holes formed therein to a print roll or material comprising:

• (a) a metal base cylinder,
• (b) said cylinder having a ceramic-fluorocarbon mixture coating about the periphery thereof with a fluorocarbon polymer dispersed homogeneously throughout the entire thickness of the coating, thereby lowering the dyne level to greatly enhance ink transfer from the transfer roll to the print roll by providing a precise distribution of ink to the print roll and improving the durability and corrosion resistance of the transfer roll;
• and
• (c) a plurality of pulsed laser drilled, micron-sized ink holes radially formed in the outer coating, each of said ink holes having a hemispherical bottom, a generally cylindrical intermediate portion and a rounded, beveled entry way.