Abstract: An ink metering system in a printing press is described. The printing press has a roller that is divided into a plurality of ink zones, whereby each of the ink zones has an associated piezoelectrical actuating drive. An ink metering system is characterized by a control device containing the actuating drive and a sensor.

Abstract: An ink metering system in a printing press is described. The printing press has a roller that is divided into a plurality of ink zones, whereby each of the ink zones has an associated piezoelectrical actuating drive. An ink metering system is characterized by a control device containing the actuating drive and a sensor.

Abstract: A device for movably positioning in a plurality of positions a magazine for automatically changing printing plates in a printing machine for changing the printing plate of the plate cylinder, replacing the printing plates of the magazine, servicing the printing machine and normal operation, includes a device for mounting the magazine, including a vertical guide wherein the magazine is displaceable, and a horizontal shaft about which the magazine is swivelable, and drive devices for displacing and swiveling the magazine.

Abstract: An actuator or adjusting drive having an electric drive motor connected to an actuating shaft and a position transmitter, comprising a reduction gear unit intermediately connected to the drive motor and the actuating shaft, and a gear drive intermediately connected to the drive motor and the position transmitter, at least one of the reduction gear unit and the gear drive having two bearing shafts extending parallel to one another, and reduction gearwheels formed of a pinion and a spur gear connected thereto so as to be fixed against relative rotation therewith, the reduction gearwheels being exchangeably mounted on the two bearing shafts for selectively varying at least one of quantity and diameter of the reduction gearwheels so that the pinions and the spur gears of the reduction gearwheels are disposed in meshing engagement with one another on different ones of the bearing shafts.

Abstract: A device for elastically deforming a printing plate clamped on a plate cylinder having a longitudinal channel formed therein includes a first tensioning device mounted in the longitudinal channel for tensioning the printing plate in circumferential direction of the plate cylinder, a second tensioning device for elastically deforming an end of the printing plate in longitudinal direction of the plate cylinder, and a servomotor connected to the second tensioning device for actuating the second tensioning device, the second tensioning device including an hydraulic power converter.

Abstract: A device for holding at least one of a rotational speed and a rotational angle encoder rigidly attached to a drive shaft includes a holding frame for the encoder, a crossbar spaced from said holding frame for fastening the holding frame to a machine, the holding frame having an upright disposition with substantially vertical side crosspieces, means for attaching substantially vertically disposed leaf springs to the side crosspieces of the holding frame, the leaf springs having respective ends connected to the crossbar, the holding frame having at least another leaf spring fastened to respective ends of the substantially vertical side crosspieces at a substantially horizontal side of the holding frame, and at least one structural element for securing the encoder within a range of section of the other leaf spring.

Abstract: In combination, a tachogenerator of compact construction with a hollow shaft connection and a clamping element for fixing the tachogenerator onto a rotating drive shaft, the tachogenerator includes a stator connected to a stationary machine part for securing the stator against torsion, and a rotor rotatably carrying a coding disk, the rotor being formed in part of the hollow shaft connection and being mountable on the drive shaft so as to be fixed against rotation relative thereto, the stator being mounted, through the intermediary or bearings, on the rotor for free relative rotation therebetween, the rotor having a rear end face, and the rotating drive shaft being formed with a shaft collar, the clamping element bringing the rear end face of the rotor flatly into engagement with the shaft collar formed on the rotating drive shaft.

Abstract: Ink duct for offset or letterpress printing machines has an ink metering device by which a respective ink gap is adjustable zonewise in the axial direction of an ink duct roller. The ink metering device has metering elements pressable against the ink duct roller through the intermediary of a foil covering the metering elements, the foil being fastened so as to be movable tangentially to the ink duct roller. A device is provided for holding the foil, and an adjusting device is coupled with a motorized drive an engageable with the foil holding device for progressively moving the foil tangentially to the ink duct roller at a substantially uniform feed rate so as to dispose succeeding locations of the foil at a given distance from the ink duct roller corresponding to the width of the respective ink gap.