Abstract: A method for identifying a lateral position of a vibrator roll geared to a plate cylinder in a printing press includes the steps of sensing a reference lateral position of a vibrator roll, setting a counter to a setting corresponding to the reference lateral position of the vibrator roll and rotating a plate cylinder. The lateral position of the vibrator roll changes as a result of the rotating of the plate cylinder and the counter changes as a function of the rotating of the plate cylinder.

Abstract: An inking apparatus controller includes an oscillating roller rotatable in a circumferential direction and reciprocatable along an axial direction thereof; an oscillation-width adjustment mechanism for adjusting an oscillation width of the oscillating roller; an oscillation-width adjustment unit for operating the oscillation-width adjustment mechanism; and a control unit for controlling operation of the oscillation-width adjustment unit such that the oscillation width of the oscillating roller assumes a designated value and for controlling operation of the oscillation-width adjustment means such that during cleaning work, the oscillating roller oscillates over an oscillation width which is set in a memory in advance.

Abstract: A method for controlling the ink quantity in an inking unit of a printing machine by a predetermined nominal value, using a vibrator roller oscillating between a fountain roller and the inking unit, and picking up an ink portion and surrendering it to the inking unit with which the vibrator roller is in contact, includes varying the width of an ink stripe on the vibrator roller, depending upon the nominal value, by adjusting the size of the transferred ink portion, for a modification in the nominal value, from a size (FI) corresponding to the nominal value prior to modification, to at least one intermediate size (Fz) lying beyond a size (Fx) corresponding to the modified nominal value and, subsequent to the expiration of a transition time interval ([t1,t2]), adjusting the intermediate size (Fz) of the ink portion back to the size (Fx) thereof corresponding to the modified nominal value.

Abstract: A printing press has a ductor inking unit that includes a ductor roller and a motor for moving the ductor roller via a rotatable cam disc, the motor being constructed so as to subject the cam disc to periodic angular acceleration at constant printing speed of the printing press, and so as to rotate the cam disc alternatingly in opposite rotational directions; and a method of operating the printing press.

Abstract: A device for internal mass balancing in self-reciprocating rolls, in which a balancing weight is arranged so as to permit a force (Fa) in the direction opposite to a reciprocating movement (A,B).

Abstract: A method of operating a printing machine including an inking unit having a vibrator roller oscillatable reciprocatingly between an ink-duct roller and an inking-unit roller for making intermittent contact with the rollers, includes selectively operating the inking unit in a normal operating mode and in at least one reduced-ink operating mode wherein the ink-duct roller rotates with a movement characteristic different from that of the normal operating mode; a control method for the operating method; and a device for performing the operating method.

Abstract: A crank mechanism for use in a rotary printing press is capable of varying the crank stroke length while the rotary printing press is operating. A rotatable eccentric journal and an eccentric bushing are shiftable with respect to each other. A helical groove and a cooperating pin are used to shift the eccentricities of the journal and the bushing to vary the effective stroke length of the crank mechanism.