Abstract: A rotary printing press includes an inking unit with an ink fountain and an ink fountain roller. An ink fountain blade to be disposed in the ink fountain for scraping printing ink from the ink fountain roller includes a base body having a free end region to be associated with the ink fountain roller. The free end region has a plurality of slits formed therein for dividing the free end region zonally into a corresponding number of individual blades and defining zones of contact of the individual blades with the ink fountain roller. A hard-material coating is disposed on the base body in the zones of contact.

Abstract: A printing unit of a rotary printing press utilizes a "waterless" planographic printing plate which is fastened on a printing cylinder. This "waterless" planographic printing plate receives ink from a short inking unit and directly prints a material to be printed. An additional printing cylinder, that is also equipped with a "waterless" planographic printing plate, acts as the counterpressure cylinder.

Abstract: The specification describes an apparatus for providing a fluid under pressure to an exterior surface of an elongate cylinder. The apparatus is comprised of an elongate housing having a fluid collection chamber havingan opening positionable adjacent the exterior surface of the cylinder and an elongate nozzle in the housing which is projected through the opening in close proximity to the exterior surface of the cylinder. The nozzle has a length which is about equal to the length of the cylinder and a width which is less than the diameter of the cylinder. Conduits are connected in fluid flow communication with the nozzle and chamber in order to provide a flow of ink or cleaning fluid to the nozzle for inking or cleaning the cylinder under pressure and to maintain a reduced pressure in the chamber relative to the pressure of fluid exiting the nozzle.

Abstract: Apparatus (10) for adjusting and aligning a first, slidable surface (12) in proximate contact with a second, rotating surface (14). Means for urging a lateral edge of the first surface (12) towards and subsequently in contact with the second surface (14) includes a motion transfer system which includes a pivot arm (18,19) driven by a respective rotatable rod-like member (40,42). The rod-like member (40,42), when moved axially, urges the respective pivot arm (18,19) into forced moving contact with an end portion of the first surface (12) until it is aligned with and subsequently in proximate contact with the roller surface (14). Alignment of the doctor blade (12) is achieved by turning a hex nut portion of the rod like member controlling the respective pivot arm until the end portion of the blade is aligned identically with the roller surface (14).

Abstract: In an inking apparatus for use in a printing press, an ink pan located below a plate cylinder is separated into a first part which accommodates a furnisher roll for furnishing ink and a second part which receives contaminated ink containing foreign substance scraped off a doctor blade. In order to prevent the ink within the second part from flowing directly into the first part, partitions are provided, or alternatively the second part is positioned lower than the first part, or alternatively the first part and the second part are comprised of two separate receptacles. The supply of ink to the plate cylinder may be carried out by any suitable means other than the furnisher roll. The ink pan may be configured in the form of an exclusive receptacle adapted to receive only the contaminated ink containing foreign substance scraped off the doctor blade, the supply of ink to the plate cylinder being effected without passing through the ink pan.

Abstract: An apparatus for precisely locating and instantaneously securing and releasing a first, stationary surface in proximate contact with a second, movable surface. A portion of the first surface is compressively secured by the apparatus so as to expose a lateral edge of the first surface for contacting the second surface. Means for securing and releasing the first surface is provided to enable a quick and easy adjustment or removal of the first or second surface.

Abstract: A dampening water circulation system achieves further lightweighting, easy maintenance and decreases a heat energy influencing the temperature of the dampening water. There are provide a dampening water supply pipe 50 and the dampening water pool bar 60 along the water fountain roller 20. The dampening water pool bar and the water fountain roller are arranged to maintain an aperture G of several mm to thereby form the water pool portion 70 between two members. The fed water can be kept in the dampening water pool portion to be applied on the water fountain roller. The dampening water pool portion is made small in size to minimize a time for the dampening water from the supply pipe 50 to the water fountain roller whereat the supplied water does not influenced by any foreign element, which can minimize the return water amount and is effective to decrease the cooling capacity for the used dampening water.

Abstract: A doctor blade unit for the inking system of a rotary printing press consists of a doctor blade carrier, on which two doctor blades that can be brought into contact with an inking roller or screen roller are fastened parallel to one another in the approximate shape of a roof, with said doctor blades limiting an ink chamber in cooperation with the inking roller, the doctor blade carrier and sealing elements provided on the ends of said doctor blade carrier. Ducts for supplying and discharging ink into/out of the ink chamber and contacting units for pressing the doctor blade carrier against the inking roller are also provided. In order to ensure that both doctor blades can be pressed against the screen roller with exactly the same contact pressure, the doctor blade carrier is connected to a doctor blade unit carrier that is provided with the coupling rods of parallel pitman systems. The parallel pitmans are coupled to inking system flames or supports of the inking system flames.

Abstract: A registering apparatus for plate cylinders, comprising a helical tooth-carrying driving gear (16) mounted nonrotatably and slidably on an end portion of a cylinder shaft (10) at a driving side of a plate cylinder and meshed with a helical tooth-carrying driving gear (24) on a blanket cylinder, first crank arms (32) engaged with an end portion of the shaft (10) so as to apply a thrust in the axial direction of the shaft (10) and adapted to be pushed by a first thrust means (40), and second crank arms (34) engaged with a side portion of the driving gear (16) so as to apply a thrust to the plate cylinder in the axial direction thereof and adapted to be pushed by a second thrust means (46).

Abstract: An inking and coloring device for a printer has a pair of ink supply rollers, a pair of ink transfer rollers, a printing drum, a cam arm and a drive device. Each of the ink transfer rollers are movable between a first position in which the ink transfer rollers contact a respective ink supply roller and a second position for transferring ink to the printing drum. Each of the ink transfer rollers are connected to a respective cam roller operable by the cam arm. The drive device causes the cam arm to move in a reciprocal manner, thereby causing each cam roller to move a respective ink transfer roller between its first and second positions. The arrangement is such that when one ink transfer roller is in the first position, the other is in the second position and, vice versa. The printing drum is reciprocally movable between the ink transfer rollers simultaneously with the movement of the said cam arm.

Abstract: Generally, the present invention relates to a fluid container in a unit of a printing machine, comprising a device filling a fluid container with fluid, the device being mounted on a carriage so as to be movable to and fro in longitudinal direction of the fluid container, and comprising a device monitoring the fluid level in the fluid container by means of sensors being fastened to the carriage.

Abstract: An assembly for controlling the temperature of a fountain fluid and/or selected drums of a printing machine comprises a fountain fluid circulating system for supplying a fountain fluid application means with a fountain fluid, a cooling fluid circulating system for supplying a drum cooling means with a cooling fluid, a first internal cold source which is in heat-exchanging relationship with the fountain fluid circulating system, a second external cold source which is in heat-exchanging relationship with the cooling fluid circulating system, and a means for selectively operating one of the circulating systems, for the fountain fluid or the cooling fluid, or both of these circulating systems. Further the condenser means of the first cold source is in heat-exchanging relationship with the refrigerant circulating system of the second cold source. The temperature controlling assembly thereby allows the requirements for cooling energy to be precisely matched to the currently effective operational mode.

Abstract: A printing system for a multi-color web-fed rotary printing press utilizes a plurality of printing system units that are arranged in a vertical array. Each printing system unit includes a left printing portion, a right printing portion, and a central printing portion. The left and the right portions are supported in left and right shiftable frames which are shiftable horizontally with the respect to a center frame that supports the center portions of the printing system units.

Abstract: A process and rotary printing machine for indirect rotogravure printing without intermediate drying, wherein the printing ink with a viscosity in the range of 80 to 1000 mPa s is supplied to the rotogravure form cylinder by a chamber doctor. Additionally, the transfer cylinder carries a covering with a closed surface, low surface roughness, low wettability and high radial compressibility.

Abstract: A system for supplying dampening fluid to a lithographic press dampening system. A metering roller pair is arranged to form a metering nip such that dampening fluid cannot drain away in a circumferential direction when the rollers stop moving. The metering nip constitutes a reservoir capable of being replenished with dampening fluid so the metering rollers can deliver dampening fluid in a manner that prevents contamination. The system includes a pair of metering rollers having a nip at their junction and a sensor for controlling the supply fountain solution available for delivery to the metering nip.

Abstract: The amount of a dampening agent applied to a printing unit is regulated by sensing the light reflected from several unprinted areas of a web that has passed through the printing unit. The reflectance of a center blank strip is used as a reference and the reflectance of adjacent strips are compared to this reference. Dampening fluid is regulated on the basis of this comparison.

Abstract: The present invention relates to a drive for distributor rollers in an inking-unit of a rotary printing machine comprising a central gearwheel driven by a printing unit-cylinder, and distributor rollers the drive gears of which are in mesh with the central gearwheel, each of the distributor rollers performing a lateral stroke, and the central gearwheel being provided with an adjusting possibility of varying the timing point of starting the lateral stroke with respect to the front end of the printing plate, and thus influencing the inking of the printing plate according to the respective subject to be printed.

Abstract: Slave rollers 5x, 5y and 5z are attached to a co-axis of a treating roller, and releasing cams 8x, 8y and 8z contacting with the slave rollers 5x, 5y and 5z for separating the treating roller from the plate carrier 2 when a protruding portion protruding above the plate carrier 2 passes through the treating roller, so that the treating roller having contacted with the rotating carrier plate 2 is released from the plate carrier 2.

Abstract: An ink furnishing apparatus is capable of furnishing relative high viscosity ink in keyless ink furnishing. The apparatus operates in such a manner that an ink drawn from an ink fountain by rotation of a fountain roller and having a thickness corresponding to a first gap is supplied to the peripheral surface with compression by passing through a second gap, is provided fluidity by compression and disrupter through contact between the peripheral surfaces of an uneven surface roller and an intermediate roller and contact between the peripheral surfaces of the intermediate roller and a metering roller for supplying to the peripheral surface of the metering roller, the excess amount of ink on the peripheral surface of the metering roller is scraped off by a doctor means and returned to the ink fountain for supplying substantially uniform amount of ink at any axial position of the metering roller to a printing plate on a plate cylinder via the peripheral surface of the form roller.

Abstract: A gravure printing press assembly composed of an impression roller having a core portion, a support shaft for the core portion which is rotatable with respect to the core portion, and an outer conductive layer disposed about the core portion and a high-voltage contact assembly for applying a high voltage to the impression roller. The high-voltage contact assembly comprises a first assembly having a brush support member and a plurality of brushes associated with the brush support member, the brushes being held by the brush support member at a plurality of positions circumferentially disposed with respect to a central axis passing through the support shaft; a second assembly having a conductive contact ring disposed adjacent the brushes and being rotatable relative to the first assembly; and means for allowing relative movement between the first assembly and the second assembly in a direction parallel to the central axis of the support shaft.