Device and method for adjusting and/or modifying a profile in the supply of dampening medium, extending in the direction of the printing width, and printing unit having a device for adjusting and/or modifying the profile

A device for adjusting and/or modifying a dampening medium profile that extends in the direction of a printing width in a printing unit (11, 21) having at least one printing unit cylinder (13, 19), at least one inking unit (17) for inking up the printing unit cylinder (13, 19), and at least one dampening unit (18) that cooperates with the printing unit cylinder (13, 19) and/or the inking unit (17), wherein a drying device (39) extending over the printing width is provided with a number of I (I ε , I>1) drying elements (41k), the influence of which on a surface (F) of the printing unit (11, 21) to be treated allows dampening medium to be removed from a number of n (n ε , n>1) axial sections aj (j=1, . . . , n) that are offset relative to one another in the direction of the printing width, and the extent of the influence of which with respect to the axial section (aj) and/or the operating state of which can be varied independently of one another, characterized in that the drying elements (41k) are embodied and arranged in the printing unit (11;

• 21) in such a way that at least 20% of the width (bj), as seen in the direction of the printing width, of multiple or all of the axial sections (aj), which are embodied as active sections (aj) having an active width (bj) of the drying elements (41k) in the printing unit (11;
• 21) over the extension of said sections overlaps with an adjacent axial section of the axial sections (aj), which are axially offset relative to one another in the direction of the printing width.

A method for adjusting and/or modifying a profile in the supply of dampening medium, extending in the direction of a printing width, wherein during operation, excess dampening medium is removed from a printing unit (11;

• 21), from a plurality of axial sections arranged offset relative to one another in the direction of a printing width, by means of a drying device (39) that has a plurality of drying elements (41k), which are individually adjustable in terms of their action, characterized in that in at least one operating situation, dampening medium is removed from at least one axial section (aj), in that a length of at least 20% of the active width (bj) of the axial section (aj), which is formed as an active section (aj) of an active drying element (41k), overlaps the active width (bj−1;
• bj+1) of an axial section (aj−1;
• aj+1) that is embodied as the active section (aj−1;
• aj+1) of an adjacent active drying element of the drying elements (41k), which are offset axially relative to one another in the direction of the printing width.