Flexography printing
AssigneeXeikon Prepress N.V.
InventorBart Mark Luc Wattyn
Life of this patent
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Abstract
A flexographic printing plate includes at least one halftone printing area with a plurality of halftone dots. A halftone dot of said plurality of halftone dots is shaped as a relief area. Said relief area includes a central portion and a surrounding portion. Said central portion has a central dot floor with a first pattern of a plurality of pins protruding upwardly from the central dot floor. Said surrounding portion protrudes upwardly from the central dot floor and has a top side including a second pattern of a plurality of recesses. The first pattern and second pattern are such that the surrounding portion can be distinguished from the central portion.
Claims16
A method for generating a plate layout for making a flexographic printing plate, said plate layout representing an image comprising solid image areas and halftone image areas, said method comprising:
- providing a computer,
- the computer receiving digital values representing point by point the image to be printed;
- and
- the computer generating a plate layout in which the digital values have been converted into binary data allowing to form the halftone image areas and the solid image areas, wherein for the halftone image areas, at least a tile associated with a halftone dot is calculated, said tile containing a plurality of pixels arrayed in two dimensions;
- wherein the tile is calculated such that it contains a central portion with a first pattern of a plurality of pins;
- the plurality of pins being represented by a binary value different from the rest of the central portion;
- and a surrounding portion comprising a second pattern of a plurality of recesses;
- the plurality of recesses being represented by a binary value different from the rest of the surrounding portion;
- wherein the first pattern and second pattern are such that the surrounding portion can be distinguished from the central portion.
A computer program product which encodes a program in machine-readable and machine-executable form to perform the steps of:
- receiving digital values representing point by point an image to be printed;
- and
- generating a plate layout in which the digital values have been converted into binary data allowing to form halftone image areas and solid image areas, wherein for the halftone image areas at least a tile associated with a halftone dot is calculated, the tile containing a plurality of pixels arrayed in two dimensions;
- wherein the tile is calculated such that it contains a central portion with a first pattern of a plurality of pins;
- the plurality of pins being represented by a binary value different from the rest of the central portion;
- and a surrounding portion comprising a second pattern of a plurality of recesses;
- the plurality of recesses being represented by a binary value different from the rest of the surrounding portion;
- wherein the first pattern and second pattern are such that the surrounding portion can be distinguished from the central portion.
Dependencies are inferred from the claim text.