Back to results
US 8,418,611 B2Granted
Printing unit
AssigneeHeidelberger Druckmaschinen AG
InventorsWolfgang Schoenberger, Dieter Schaffrath, Hans Butterfass
Life of this patent
Estimating the term…
Abstract
A printing unit contains a dampening unit and an inking unit which includes a screen roller with a circumference and an ink applicator roller with a circumference and a gap having an arc length or curve length, the ink applicator roller resting against the screen roller. The circumference of the screen roller and the circumference of the ink applicator roller and the arc length or curve length of the gap are dimensioned in predetermined proportions relative to each other so as to avoid ghosting.
Claims4
A printing unit, comprising:
- a dampening unit;
- and
- an inking unit having a screen roller with a circumference URW and an ink applicator roller with a circumference UFA and a gap having an arc length or curve length KBL, said ink applicator roller resting against said screen roller, said screen roller and said ink applicator roller including said gap being dimensioned such that for URW<UFA and an integer n≧1, the following applies:
- n×URW+KBL≦UFA;
- (n+1)×URW≧UFA+KBL;
- 3×KBL≦UFA;
- and
- 2×KBL≦URW.
5 more elements
Dependencies are inferred from the claim text.