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US 2020/0254753 A1Published application
Inking system with minimal ink storage
AssigneeBobst Firenze S.R.L.
InventorFederico D'ANNUNZIO
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Abstract
The invention discloses an inking system for a rotary printing machine, like a flexographic or rotogravure press. The inking system uses the nip area between two cylinders of the machine as the sole source for inking the printing cylinder. This results in an inking system with very little ink, thereby gaining in reaction time and ink waste.
Claims14
An inking system, for a rotary printing unit, comprising:
- an inking cylinder and an etched cylinder arranged to retain ink between them in a nip area;
- an ink outlet configured to provide the nip area with ink;
- and
- a sensor configured to measure an ink level in the nip area,
- wherein the inking cylinder and the etched cylinder are configured to turn in a same direction.
2 more elements
A method for inking an etched cylinder using a minimal amount of ink, for a printing unit comprising an inking cylinder kept in contact with the etched cylinder along a contact line and an ink outlet, the method comprises
- providing ink through the ink outlet to a nip area located between the ink outlet and the contact line;
- spinning the inking cylinder in a same direction than the etched cylinder to retain the ink in the nip area;
- and
- controlling the ink level in the nip area by adding ink when necessary.
1 more element
Dependencies are inferred from the claim text.