Screening method and apparatus for use in intaglio printing

摘要

The present application provides a screen method for intaglio printing, comprising: dividing multiple classes of regions according to a brightness range; and generating screen dots with various screen patterns for the grouped classes of regions. The present application also provides a screen device for intaglio printing, comprising: a dividing module configured to group multiple classes of regions according to the brightness range; and a generating module configured to generate screen dots with various screen patterns for the grouped classes of regions. Since multiple kinds of screen patterns are applied in the technical solutions in present application, the problem, i.e., water ripple will occur in the prior art, may be addressed, so as to improve the quality of printing.

主权项

1. A screening device for use in intaglio printing, comprising:
a dividing module configured to divide tonal zones to be printed into a plurality of classes of regions according to the brightness ranges; and a generating module configured to generate screen dots with various screen patterns for the classes of regions, wherein, the dividing module sets a region having brightness in [0, Per1], a region having brightness in a light tone region[Per1, Per2], a region having brightness in a light tone region [Per2, Per3] and a region having brightness in [Per2, 1] as a light tone region, a light tone-mid tone region, a mid tone-dark tone region and a dark tone region, respectively, and wherein Per1=0.25, Per2=0.5 and Per3=0.8.