Abstract: Printing machine having at least one impression cylinder (16), characterised in that the impression cylinder (16) has a cylinder body (44) made of a material which, in circumferential direction of the impression cylinder (16) has a linear thermal expansion coefficient of less than 2×10?6 K?1. The material may be a composite material, for example, a material containing carbon fibers, in particular a synthetic resin reinforced with carbon fibers.

Abstract: A method of printing with a rotary printing press having a plurality of printing cylinders that are adapted to be adjusted on and off from a running web, with a length of a printed image being larger than a peripheral length of the largest one of the printing cylinders, the method including the steps of subdividing the printed image into elements, printing these elements with different printing cylinders, and periodically shifting at least one of the printing cylinders off from the web, each time for at least a duration of one turn of the printing cylinder.

Abstract: A device for handling sleeves (20) for cylinders of printing presses, wherein a carrying tube (26) is provided, on which a mounting device (28), engaging these sleeve (20), is disposed for mounting the sleeve in a position, which is aligned coaxially with the carrying tube.

Abstract: Multiple-stand photogravure machine with a first (10) and at least an additional printing unit (12a, 12b), each containing an impression roller (32, 52) and a driven print cylinder (34, 54), characterized in that in the at least one additional printing unit (12a, 12b) the impression roller (52) is provided with a regulated drive (56) and is in contact with the printable material (16) such that it can sustain a web velocity of the printable material (16) different from the circumferential speed of the adjoining print cylinder (54).

Abstract: A printing press with a doctor blade device (24), which has a doctor blade (26), which can be placed against a cylinder (10), wherein the doctor blade (26) is caused to oscillate with a frequency of at least 1 Hz by an oscillator (38).

Abstract: A seal for a chambered doctor blade (10) of a printing machine, in the form of a rubber-elastic body, which is inserted at the end of the chambered doctor blade in a seal holder (18) and, with an obliquely applied lip (24), lies against the periphery of a roller (12), against which the chambered doctor blade is placed, wherein the seal (20) has a second lip (24), which forms a V-shaped cross section with the first.

Abstract: A cleaning device for cleaning blocks clamped on a rotationally driven printing cylinder of a printing machine, the cleaning device including a rotatable cleaning roller, cleaning organs disposed on a periphery of the cleaning roller and which can be placed in contact with a peripheral surface of a printing cylinder, with angular positions of the cleaning organs varying in an axial direction of the cleaning roller, and the cleaning organs, in each angular position, are disposed on the periphery of the cleaning roller in only a single axial section of the cleaning roller, and control equipment for locking the cleaning organs in different angular positions.

Abstract: A seal for a chambered doctor blade (10) of a printing machine, in the form of a rubber-elastic body, which is inserted at the end of the chambered doctor blade in a seal holder (18) and lies against the periphery of a roller (12) against which the chambered doctor blade is placed, wherein the part of the seal (20) taken up in the seal holder (18), is constructed as a solid, rectangular support (22), which lies, with one end face, with a smooth surface (42), in contact with the chambered doctor blade (10) and is surrounded at the three remaining sides by continuous tolerance equalization lips (44).

Abstract: A flexographic printing press with a back-pressure cylinder (10) and at least one inking unit (12, 14, 16), which has an exchangeable printing cylinder (20), which can be placed against the back-pressure cylinder (10), an engraved ink transfer cylinder (24; 38), which can be placed against the printing cylinder and a chamber doctor blade (26), which can be placed against engraved ink transfer cylinder, wherein a washing cylinder (34) is constructed to be inserted in the inking unit (12, 14, 16) instead of the printing cylinder (20) and to apply cleaning liquid to the surface of the back-pressure cylinder (10).

Abstract: A method of exchanging a printing cylinder sleeve in a printing machine, which printing machine comprises a central cylinder and a plurality of ink units adapted to be adjusted against the central cylinder, each ink unit comprising a plate cylinder having a printing cylinder sleeve mounted on a mandrel, and a detachable bearing for supporting the mandrel, the method comprising the following steps, which are performed while the printing machine is running: moving the plate cylinder away from the central cylinder to such an extent that a space formed between the plate cylinder and the central cylinder becomes large enough for gripping the printing cylinder sleeve, detaching the bearing, and withdrawing the printing cylinder sleeve axially from the mandrel.

Abstract: A printing cylinder with a cylinder core (10), on which a carbon fiber-containing casing (20) is disposed, wherein the casing (20) is self-supporting and held at a distance from the peripheral surface (18) of the cylinder core (10) by disks (22) disposed at the two ends.

Abstract: A method of exchanging a printing cylinder sleeve in a printing machine,

Abstract: A flexographic printing press with a back-pressure cylinder (10) and at least one inking unit (12, 14, 16), which has an exchangeable printing cylinder (20), which can be placed against the back-pressure cylinder (10), an engraved ink transfer cylinder (24; 38), which can be placed against the printing cylinder and a chamber doctor blade (26), which can be placed against engraved ink transfer cylinder, wherein a washing cylinder (34) is constructed to be inserted in the inking unit (12, 14, 16) instead of the printing cylinder (20) and to apply cleaning liquid to the surface of the back-pressure cylinder (10).

Abstract: A printing machine with a cylinder sleeve (16), which can be rotationally driven and is supported at both ends with protruding axle journals (18) directly in the machine frame (10, 12), and with a shaft (22), which passes through the cylinder sleeve and can be driven along with it, such that the rotational driving takes place over the shaft (22) and the cylinder sleeve (16) can be set axially against a torque transfer element (28), which is seated on the shaft.

Abstract: A drive clutch for connecting a drive shaft (12) with an exchangeable cylinder (10) of a printing machine, such that, at one end of the cylinder (10), a locking part (24) is provided and that, in or on the drive shaft, a spanner (32) is disposed, which has a recess (38), which opens up radially and into which the locking part (24) can be introduced positively, and that the spanner (32) can be retracted axially, in order to pull the cylinder (10) with the help of the locking part (24) against the end of the drive shaft (12).

Abstract: Apparatus for detecting collisions in a printing machine having at least one rotationally driveable rotary body (18; 20) and an actuator (28; 30) for adjusting the rotary body in a direction normal to the axis of rotation, the apparatus including a torque sensor (T) and/or an angle increment sensor (&OHgr;) for detecting the driving torque and/or the rotary speed of the rotary body (18; 20), and a control unit (38) adapted to detect a collision of the rotary body with another component member on the basis of the signal of the torque or angle increment sensor and to stop the actuator (28; 30) thereupon.

Abstract: A seal for a chamber doctor blade (12) of a printing machine, with a sealing block (30) of a pliable material, which is inserted at one end of the chamber doctor blade between two doctor blades (16, 18) and closes off an inking chamber (20), bounded by the periphery of an applicator roller (10) of the printing machine, the doctor blades and a housing (14) of the chamber doctor blade, in which the surface of the sealing block (30), facing the applicator roller (10), is covered with a strip (34) of elastic material, which is harder than the material of the sealing block.

Abstract: A method for producing bags (12) with carrying handles (48), for which the starting material for the carrying handles is supplied as endless material and at least two carrying handles are affixed to each finished or still unfinished bag, in which the starting material for the several carrying handles (48) belonging to one bag (12), to begin with, are supplied in the form of a single strip (20) of material, which then is divided up continuously into several parallel partial strips (38, 40) for the individual carrying handles.

Abstract: A method for manufacturing flat-bottom bags with a glued-in bottom lining includes the steps of applying a contact adhesive, which develops a desired adhesive force only when two surfaces, both of which are coated with the contact adhesive, are pressed against one another, onto a starting material for the bag, subsequently closing the starting material into a tube, supplying the tube to a bottom-laying station to produce a flat-positioned bottom of the bag, and completing gluing by exertion of pressure on the flat-positioned bottom of the bag after the bottom lining has been placed upon the flat-positioned bottom.

Abstract: A printing machine with preferably several inking units, which are disposed on a common back-pressure cylinder (12), with in each case at least one roll body (16, 18), which is held with its two opposite ends in two bearing blocks (22, 24) that can be moved approximately radially with respect to the back-pressure cylinder, and is held with its one end in a hinged bearing (42), fastened to the bearing block (22) there, while it is clamped with its other end in a cantilever manner in a holding device (26), it being possible to move the holding device and the hinged bearing in such a manner relative to one another that, after the hinged bearing is lifted up, the roll body can be moved out of this bearing and then removed in an axial direction, characterized in that the hinged bearing (42), in the lifted-up state, is open in the direction of movement of the associated bearing block (22) and, by moving this bearing block in the direction approximately radial to the back-pressure cylinder (12), can be moved into th