Banding-reduced imaging of a printing form
AssigneeHeidelberger Druckmaschinen AG
InventorsBernard Beier, Uwe Ernst, Bernd Vosseler
Life of this patent
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Abstract
A method and a device for imaging a printing form (48) via at least two imaging modules (40,418) which each have at least one light source are disclosed for avoiding the banding effect that an imaging in a transition region (416). The two imaging modules (40,418) are provided in such a manner that a number of at least partially not-simply connected printing dots are produced in the transition region (416) by the first imaging module (40) and the complementary, not-simply connected printing dots are produced in the transition region (416) by the second imaging module (418).
Claims10
A method for imaging a printing form via at least one first imaging module and one second imaging module for producing printing dots on the printing form, in connection with which both imaging modules, for the imaging in a transition region, cover identical locations of the printing form, comprising the steps of:
- producing in the transition region a plurality of at least partially not-simply connected first printing dots using the first imaging module;
- and
- producing in the transition region complementary, not-simply connected second printing dots using the second imaging module.
A device for imaging a printing form comprising:
- a first imaging module for guiding first imaging spots of at least one first light source over a transition region of the printing form, the first imaging spots of the at least one first light source producing a first set of printing dots in the transition region constituting a not-simply connected set;
- and
- a second imaging module for guiding second imaging spots of the at least one first light source or at least one second light source over the transition region of the printing form, the second imaging spots producing a complementary, not-simply connected second set of printing dots in the transition region;
- the first and second imaging modules being movable relative to the printing form.
Dependencies are inferred from the claim text.