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US 9,221,243 B2Granted
Doctor-type ink fountain having a rear wall in a printing press and printing press having a doctor-type ink fountain
AssigneeHeidelberger Druckmaschinen AG
InventorMichael Diews
Life of this patent
Estimating the term…
Abstract
A doctor-type ink fountain includes a rear wall and a row of flow profiles provided along the rear wall. The flow profiles are obliquely aligned at an acute angle relative to an axis of rotation of a screen roller interacting with the doctor-type ink fountain. A printing press having the doctor-type ink fountain is also provided.
Claims10
In a printing press having a screen roller with an axis of rotation, a doctor-type ink fountain interacting with said screen roller having a helical engraving, the doctor-type ink fountain comprising:
- a rear wall having a side;
- said rear wall being formed with a row of flow profiles on said side, said flow profiles being configured to fluidically influence printing ink;
- said flow profiles being obliquely aligned at an acute angle relative to the axis of rotation of the screen roller, said flow profiles being profiled and directed to compensate for a conveying flow caused by the helical engraving of the screen roller with a backward flow or backward flows caused by said flow profiles, said flow profiles rising in a direction opposite the direction of slope of the helical engraving in an operating condition of the doctor-type ink fountain;
- and
- a doctor blade, said rear wall together with said flow profiles being supported to be adjustable relative to said doctor blade.
2 more elements
Dependencies are inferred from the claim text.