Abstract: An apparatus for cleaning one or more selected portions of a surface of a cylinder of a printing press includes a plurality of brush elements disposed adjacent one another opposite the surface of the cylinder. A device for selectively moving one or more of the plurality of brushes to contact the selected portion or portions of the surface of the cylinder so as to clean the selected portion or portions is provided.

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: In a rotary screen printing apparatus, a method and apparatus are disclosed for converting a printing station into a cleaning station. A cleaning attachment replaces either the squeegee or the flood bar, or both, in a conventional print station.

Abstract: A cleaning element for a solder paste printing machine includes a shaft with an opening therein. Positioned within the opening is a protrusion element. A spring element is also positioned within the opening. The protrusion element further includes a first portion which fits within the opening of the shaft, and a second portion which extends beyond the opening in the shaft. At least a portion of the spring element is sandwiched between the opening in the shaft and the first portion of the protrusion element. A cover having a slot therein for allowing the second portion of the protrusion element to pass therethrough may also be provided for covering the shaft.

Abstract: A self-adjusting blade for engagement with a moving work surface, comprising a steel strip elongated in a first direction between first and second sides, said strip having an edge section along said first side for contact with said work surface, and said edge section being hardened to a hardness exceeding that of the remaining part of said strip. The self-adjusting blade is provided with a coating of a low wear resistance material covering substantially all of said edge section at least on the part thereof contacting the work surface.

Abstract: At least one restriction (R) of the terminal part of the fluid mixture delivery channel (20) is introduced upstream of each bifurcation (B), preferably at the branching point of the said bifurcation, this restriction having the function of recompacting the said mixture on the mid-line of the said bifurcation, in such a way that the distribution of the said mixture can be carried out in an equal way in the two following channels. The aforesaid restriction also has the function of progressively calibrating the pressures in the fluid mixture transport circuits, in such a way that identical quantities and qualities of mixture reach the various outlet holes (10), even when the transport channels (1000) are made with sufficiently large dimensions to ensure that the quantity of air required for effective spraying of the transported detergent liquid reaches the final outlet holes (10).

Abstract: A system and method of cleaning a printing cylinder surface, wherein solid carbon dioxide is incorporated into an air stream, through a nozzle, and impinged on the printing cylinder surface. An exhaust tube may be present to evacuate materials removed by impacting the solid carbon dioxide on the printing cylinder surface. The nozzle and exhaust tube may be reciprocated over the printing cylinder surface to enable a more thorough and efficient cleaning operation. A sensor and control unit may be optionally present. The sensor would sense the thickness of a film being cumulatively deposited on the printing cylinder surface and generate a signal when the film reached a predetermined thickness. The control unit would initiate the cleaning operation in response to the signal from the sensor.

Abstract: Upon replenishing cleaning members 10 of a plurality sets of cleaning means 1 of a cleaning apparatus with a cleaning solution, those sets of cleaning means 1 having the cleaning members 10 to be replenished, respectively, are fed with the cleaning solution from a cleaning solution supply source part 21 communicated with the plurality sets of cleaning means 1 through supplying conduits 23 via supply branching part 22. The cleaning solution as fed out reaches the supply branching part through the supply pipe, and fed out from the supply branching part in a manner branched into the supplying conduits branched to feeding destinations, respectively, to thereby reach the plurality of cleaning members to be replenished. In this way, upon replenishing a plurality of cleaning members of a bearer cleaning apparatus with a cleaning solution, it becomes possible to replenish the plurality of cleaning members with the cleaning solution from a single location in an extremely simple manner.

Abstract: A rotary printing press for printing on different width paper. The printing press utilizes multiple rotating plate cylinders of different width size housed in an independently rotating magazine which allows for printing on sheet fed or web paper without having to change printing modules or ink transfer cylinders. The multiple rotating cylinders of different width size are engaged with a continuous ink transfer device which transfers the ink from the imaged inked plate to the paper or printed substrate. This press may be utilized to print on both sides of the paper or printed substrate by combining two printing presses on either side of the paper or printed substrate.

Abstract: The present invention relates to a print element design which can be used to print an image on a substrate such as an absorbent disposable paper product. This invention also relates to a print plate which incorporates this print element design. The invention further relates to an absorbent disposable paper product which incorporates this element design. The print element design of the present invention reduces ink and fiber adherence to the printing plates thus resulting in improved printing press hygiene.

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 bladder for bringing and engaging a cleaning cloth into contact with a blanket cylinder. The bladder has a molded (extruded or machined) shape optimized to, when inflated, provide a contact surface elevated above the remainder of the bladder. When the bladder is not inflated, the central portion is elevated above the remainder. In addition, the device has improved contact characteristics, providing significant improvement in the consistency of contact surface with less sensitivity to pressure fluctuations between the cylinder and the bladder over prior art.

Abstract: A continuous conditioning system for a printing belt or cylinder in a printing press includes a conditioning device and a cleaning device. The continuous conditioning system is designed to improve print quality by removing and/or significantly reducing transferability of excessive or wet ink, debris, residue or shadows from previous impressions that accumulate on a printing belt or cylinder. The conditioning device includes a conditioning cloth which is in the form of a belt that is in continuous engagement with the printing belt or cylinder. The continuous conditioning system may include a cleaning cloth which is in the form of a belt that is periodically brought in engagement with the printing belt or cylinder. The conditioning device and the cleaning device each have a cloth-rinsing/cleaning device for cleaning the conditioning cloth which is in the form of a belt and cleaning cloth which is in the form of a belt after they contact the printing belt or cylinder.

Abstract: A removable, compact and easily accessible cylinder impurity remover apparatus has a wiping position for removing impurities from a rotatable printing plate cylinder on a printing press and a non-wiping position. The impurity remover removeably slides or swings into position for wiping a plate on the plate cylinder. Most preferably, a pressure source acts on two pistons to move two parallel reciprocably mounted shafts and a wiper blade mounted thereon to the wiping position. Both the pistons and shafts are preferably contained inside an actuator bar, which is mounted parallel to a printing plate cylinder. As the wiper blade moves forward to the wiping position, a bias member is compressed and remains compressed until the pressure source stops, allowing the bias member to automatically retract the reciprocably mounted shafts and wiper blade to a non-wiping position.

Abstract: A cleaning apparatus for a printing press. The cleaning apparatus of the present invention allows for effective removal of contaminants from printing press print plates while the printing press is running. Furthermore, the cleaning apparatus of the present invention effectively applies and removes cleaning fluids such as water from the printing plate without resulting in the formation of water drops and streaks on the printed substrate.

Abstract: A cleaning device is attached at each end to shoulders pivoting on a pair of parallel arms hinged at the other end to the side walls of a machine. There pivots on at least one of the arms an assembly of pneumatic actuators, which actuators pivot at the other end on a lug integral with one of the shoulders, which shoulders are provided with spindles or rollers that run in cam paths formed in plates attached to the side walls. The cleaning device can be oriented and positioned against either of the two cylinders to be cleaned or can be set in a position remote from both of these cylinders. Mounted on at least one of the arms or on both of the shoulders are idle rollers designed to engage with corresponding cams, so that the cleaning device is moved away automatically whenever it passes over the clamps.

Abstract: The invention relates to an apparatus for imaging surfaces in printing presses, whereby the surfaces to be imaged contains image information of the preceding printing job. The apparatus allows a fast and low-cost regeneration of surfaces carrying image information in printing presses. The apparatus comprises at least one printing form cylinder, a disengageable inking unit, and a movable imaging unit having an image creation unit for applying image information to image and non-image carrying layers on the surface. The imaging unit has an erasing unit preceding the movable imaging unit in the moving direction.

Abstract: A method of printing a printing material on an object, including the steps of printing the printing material on the object through a mask having at least one through-hole formed through a thickness thereof, inspecting the printing material printed on at least one portion of the object through the at least one through-hole of the mask, and re-printing, when the inspection shows that an amount of the printing material printed on the at least one portion of the object is short, the printing material on the at least one portion of the object through the at least one through-hole of the mask to compensate for the short amount of the printing material.

Abstract: In a rotary screen printing apparatus, a method and apparatus are disclosed for converting a printing station into a cleaning station. A cleaning attachment replaces either the squeegee or the flood bar, or both, in a conventional print station.

Abstract: A cleaning apparatus includes a cleaning cloth, supply shaft, take-up shaft, detector, projections, proximity switch, and catching detection unit. The cleaning cloth is pressed against a rotary member and cleans an outer surface of the rotary member. The cleaning web before cleaning is wound around the supply shaft. The supply shaft rotates in accordance with supply operation of the cleaning cloth to the outer surface of the rotary member. The take-up shaft is rotatably driven to take up the cleaning cloth supplied from the supply shaft to the outer surface of the rotary member. The detector, projections, and proximity switch output a signal corresponding to a rotational speed of the supply shaft. The catching detection unit detects that the cleaning cloth is caught in the rotary member on the basis of a state of the signal output from the detector, projections, and proximity switch. A method of detecting catching of the cleaning web in the cleaning apparatus is also disclosed.

Abstract: A de-duster for a moving printing material web includes at least one blower nozzle assigned to a first side of the printing material web, and at least one blower nozzle assigned to a second side of the printing material web. The blower nozzles are set counter to web travel direction at an angle &agr;. The de-duster further includes at least one extraction nozzle assigned to the first side of the printing material web, and at least one extraction nozzle assigned to the second side of the printing material web. The extraction nozzles are set counter to the web travel direction at an acute angle &bgr;. Each of the at least one blower nozzle is disposed between the at least one extraction nozzle at a respective side of the printing material web and the respective side of the printing material web. A combination of the de-duster and a cutting device, a folder with the combination, and a web-processing printing press in combination with the folder, are also provided.

Abstract: Apparatus for cleaning a curved surface by employing the cloth principle, the apparatus having a roll for unsoiled cloth with unused cleaning cloth thereon, a roll for soiled cloth for taking up used soiled cloth, a pressing element for pulling unsoiled cleaning cloth off the roll for unoiled cloth and to bring it in contact with a surface to be cleaned by a movement of the element toward the surface, and means for pulling cleaning cloth off the roll for unsoiled cloth and for rolling soiled cloth up on the roll for soiled cloth by rolling up a part of the cleaning cloth that is longer or equal to the part thereof that is removed by the pressing element from the roll for unsoiled cloth independently of the respective diameters of the rolls for soiled and unsoiled cloth.

Abstract: A screen-printing device for printing a substrate, comprising at least one printing station having a removable stencil, a printing-medium feed and a squeegee device, a cleaning unit which can be displaced to and fro in the stencil at least in the longitudinal direction, feed means for feeding cleaning liquid into the stencil, and discharge means for removing printing medium and/or cleaning liquid from the stencil. The discharge means comprise a suction nozzle for sucking printing medium and/or cleaning liquid out from the stencil, which nozzle is arranged on the displaceable cleaning unit and can be moved to and fro in the longitudinal direction inside the stencil together with this unit.

Abstract: A method and apparatuses to safely and easily remove dried ink and foreign other materials from the surface of anilox rollers using one or more jets of high pressure steam.

Abstract: An automatically controlled cleaning system has a cleaning fluid reservoir with a feed of the cleaning fluid to the rotating bodies to be cleaned via a cleaning element for each body. Its serviceability can be monitored, in particular erroneously exceeding the critical quantity of cleaning agent per unit time during the cleaning of the rotating bodies of the press can be detected and countermeasures can be initiated, by constructing the cleaning reservoir as a pressure container which can be pressurized from a compressed-air source via an electronically drivable changeover valve V1, and by implementing each feed of the cleaning fluid to the rotating body by means of a fluid feed line in which there are installed at least one electronically driveable changeover valve V4 that controls the flow, and at least one further electronically driveable changeover valve V5 which controls the expulsion quantities and expulsion times of the cleaning fluid.

Abstract: A printing machine with a printing cylinder (10), the rotation of which can be driven, and a cleaning device for the local cleaning of blocks (12), clamped on the printing cylinder, for which the cleaning device is constructed as a rotatable cleaning roller (14), which can be placed in contact with the peripheral surface of the printing cylinder and is equipped with cleaning organs (16), so that the angular positions of the cleaning organs vary in the axial direction of the cleaning roller, wherein the cleaning organs (16), in each angular position, are disposed on the periphery of the cleaning roller (14) only on a single axial section of the same and the cleaning roller can be locked in different angular positions by control equipment (18).

Abstract: A coating system for supplying a coating medium to sheet material in a printing press. The coating system includes a tempering system operable for influencing the temperature of both a coating medium processed through the applicator system and rinsing mediums supplied to the applicator system for cleaning the system. The tempering system includes and intermediate container connected to the metering system of the applicator system, a first storage container connected to the intermediate container for containing a stored quantity of coating medium, and a second storage or discharge container connected to the intermediate container for a rinsing medium. The intermediate container includes a heat exchanger such that upon selected connection of either the first or second storage containers to the intermediate container, the cleaning medium or the rinsing medium can be individually tempered for optimum processing.

Abstract: A roller or a cylinder of a rotary printing press is cleaned using a liquid. A carriage is movable back and forth along the roller or cylinder. A supply container carries a clean liquid in a specified amount. A dirty liquid is returned to a receptacle. The clean and dirty liquids are supplied to, and removed from, the carriage when it is in a parked position.

Abstract: A cleaning device for printing machine cylinders and bearings (2, 60) for this for the rotatable mounting of a cloth spindle (4, 92) for a cleaning cloth. At least one of the bearings (2, 60) has a bearing bush (14, 64) which is provided with an external thread (16, 66) and which can therefore be screwed into an internal thread (17, 67) of a side part (20, 70).

Abstract: The invention relates to a washing bar for a printing press cylinder. Said washing bar comprises a flexible pressing element (6) that has an arcuate cross section and whose longitudinal edges (16, 17) are inserted between an inner strip (12) and an outer strip (18, 19). The inner strip (12) is detachably fastened so that it can be pulled out of the pressing element (6) in the longitudinal direction of the washing bar.

Abstract: A card printer is provided with a cleaning roller that will pick up debris on the surface of a card on which printing is to take place. The cleaning roller has a sticky surface, that is engagement with a band of adhesive tape that moves to contact the surface of the cleaning roller and remove debris that is on the cleaning roller surface. The tape is preferably formed in an endless band mounted on a pair of rollers that are in a common housing with the cleaning roller. The housing is removably mounted in the printer, and can be opened for replacement of the band of tape.

Abstract: A method of starting up a printing machine after washing a rubber blanket thereof, includes pre-inking the rubber blanket by performing at least one complete revolution of the rubber blanket in contact with the inked printing plate before the start of printing.

Abstract: A method for two-sided printing of a sheet of printing material having a front side and a rear side, in a sheet-fed rotary printing press, wherein the front side is cleaned before being printed, includes also cleaning the rear side of the sheet before printing thereon; and a sheet-fed rotary printing press for performing the method.

Abstract: An inking unit in a printing machine, having an ink reservoir, a dampening-solution reservoir, and conveying paths for conveying ink and dampening solution from the ink reservoir and the dampening-solution reservoir, respectively, to a web to be printed, and for conveying ink, that has emulsified with the dampening solution and that has not been picked up by the web, back to the ink reservoir, includes an ultrasonic transmitter installed so as excite an exposed dampening solution-carrying surface section of the inking unit.

Abstract: To prevents a displacement of a screen mask accompanying with a movement of a squeegee and an oxidization of a printing agent, a printing agent sweeping drum (1) has closed both end portions, has a supporting shaft (2) inserted to a center portion thereof, has a lower end portion partly opened, is made rotatable with respect to the supporting shaft, oscillates along a moving direction of the squeegee via a movement of the supporting shaft (2), moves downward at a movement starting end position, moves upward at a terminal end position, and rotates at a predetermined angle in an opposite direction at a predetermined timing at the starting end position and the terminal end position, a squeegee (4) inclined at a predetermined angle and moving upward and downward at a predetermined timing being arranged within the printing agent sweeping drum 1, a squeegee (10) and a printing agent extruding plate (11) being attached to a lower end of the squeegee holder (4) and a nitrogen gas (17) being charged into the printing

Abstract: A device for cleaning a roller in a rotary printing press uses a plurality of rotating brushes. Spray nozzles are arranged centrally in each of these rotating brushes. The brushes are supported on a carriage that can be moved along the length of the roller which is to be cleaned.

Abstract: A cleaning device (1) having a guide rail (3) with a longitudinally moveable carriage, to which carriage (4) a washing apparatus (5) is releasably affixed. The guide rail (3) is positionally adjustable for operationally placing the washing apparatus (5) at a printing cylinder (2). The washing apparatus (5) is connected to a supply unit by means of supply lines. The supply lines extend within the guide rail (3) from the washing apparatus (5) to a stationary connection position (7). The guide rail (3) includes a suction wastewater channel (14) which is placed between an upper section (15) and a lower section (16) of a movable belt (19) which is designed for the reciprocal transport of the carriage (4). A belt (19) section (15) forms a cover for the suction wastewater channel (14).

Abstract: The amount of cleaning media needed for cleaning the printing forme is determined with regard to the level of coverage with ink and/or image carrier material of a printing surface and/or from image data about the printing surface. An erasing and hydrophilizing apparatus includes a cleaning apparatus and nozzles for applying a cleaning medium, the cleaning apparatus and/or the nozzles being connected to a computing and/or storage device.

Abstract: A method of operating equipment for coating printing materials in a printing press includes providing equipment made up of at least one metering system and a circulating line system associated with the metering system for at least one liquid medium received in at least one container. The circulating line system also has a pump subsystem with at least one feed pump for feeding the liquid medium from the container to the metering system, and at least one return pump for returning the liquid medium from the metering system into the container. Furthermore, a feed line is disposed between the metering system and the feed pump.

Abstract: A blanket washer for the cleaning of cylinders in a printing press comprises a cleaning unit containing rolls for a cleaning cloth, which is to be transferred past an external pad unit on the cleaning unit. The cleaning unit has a front profile for the mounting of one or more pad units in different positions thereon.

Abstract: Method and apparatus for cleaning a rubber coated cylinder (10) mounted in an offset printing machine for transferring the print from a printing plate cylinder (11) to a paper web (12) running in contact with the rubber coated cylinder, while the offset printing machine is running. The surface of the rubber coated cylinder is brushed by means of a brush (16) which extends in parallel with the cylinder and has substantially the length thereof and which is engaged with the rubber coating and imparted an axially reciprocating movement for loosening the contaminants and distribution thereof over the surface of the cylinder. Washing liquid is sprayed onto the surface of the rubber coated cylinder from a ramp (14) mounted in parallel with the cylinder and having a number of spray nozzles distributed along the ramp for dissolving the contaminants. Washing liquid and contaminants are removed from the surface of the cylinder by means of the paper web running through the offset printing machine.

Abstract: A device for cleaning a cylinder of a machine for processing printing material includes a cleaning cloth pressable onto the cylinder for forming a contact zone. A first monitoring zone is monitorable with regard to a faulty position of the cleaning cloth, and is disposed downstream of the contact zone in a travel direction of the printing material. A second monitoring zone disposed upstream of the contact zone in the travel direction of the printing material is monitorable with regard to another faulty position of the cleaning cloth.

Abstract: Dirty-cloth takeup roller for cleaning devices Dirty-cloth takeup roller for cleaning-cloth devices for cleaning running printing material webs or cylindrical rotating bodies in a printing machine or another machine in a print shop. From a longitudinal slot in a sleeve (4), on which the cloth can be wound up, a drive lip (10) for guiding the cloth in the direction of rotation can be extended radially counter to a spring force by an inner body (14) that can be inserted into the sleeve. The drive lip (10) gives the cloth roll an inner diameter which is greater than the outer diameter (12) of the sleeve (4). As a result, the cloth roll can easily be pulled off the sleeve (4) when the drive lip (10) is moved back into the sleeve (4).

Abstract: There is disclosed a pressure pad used in an apparatus for cleaning the outer surface of a cylinder with a cleaning fabric. The cleaning fabric is directed between the pressure pad and the cylinder, the pressure pad having opposite side edges which are fixed in the apparatus to extend parallel to the cylinder. The pressure pad is made of elastomer and curved between the opposite side edges thereof to be convex toward the outer surface of the cylinder. The pressure pad cooperates with the cleaning fabric so that the cleaning fabric can be pressed against the outer surface of the cylinder by the pressure pad to clean the outer surface of the cylinder. The pressure pad comprises an engaged portion engaged with the cleaning fabric so that the cleaning fabric is sandwiched between the engaged portion and the cylinder to be pressed against the outer surface of the cylinder.

Abstract: A blanket cylinder washing method for use in a web offset printing press. A blanket cylinder is rotated independently of running of a web, with the blanket cylinder thrown off, preferably, the blanket cylinder is rotated at a speed V1 higher than a running speed V0 of the web, and the blanket cylinder is washed. It is thereby possible to decrease the amount of spoilage generated when the blanket cylinder is washed.

Abstract: Detachable inking device for a flexographic printing machine, its embodiment, cleaning and use in such a machine. This device comprises a chambered doctor blade (9) mounted on two lever-supports (13, 14) crossed by duct joining pieces (15, 16) respectively. The lever-supports are rigidly attached to a shaft (11) about which they are pivotable and which is held between the frames (34) of said flexographic printing machine. Said chambered doctor blade (9) consists of a body (25) made of light metal material, crossed at one of its ends by a tube (26) emgerging from the bottom (28) of said body (25), and at the other end by a tube (40) having its opening part (29) at level with the bottom (28) of the body (25). The latter rests on seals (38, 39) secured to the lever-supports (13, 14) to which are attached centering and fixing means (17, 18) allowing a quick loosening of the chambered doctor blade (9) without the help of any tool.

Abstract: A cleaning mat provided with a single rubber layer including many extra-fine short fibers. The extra-fine short fibers are undirectionally protruding from a surface of the rubber layer to form brush-like protruding portions. The cleaning mat is made by polishing the surface of the rubber layer composed of a mixture of raw rubber material and the extra-fine short fibers.

Abstract: A device for cleaning a cylinder in a printing machine, the cylinder having a jacket surface with at least one raised element, includes a cleaner engageable with the jacket surface of the cylinder and being rotatable about an axis of rotation for cleaning the jacket surface, the cleaner being formed with at least one recess through which the at least one raised element is able to pass.

Abstract: Rotary printing machine with forme and impression cylinders for variable-format or variable-circumference printing and with service apparatus which are capable of being moved radially in relation to the printing-unit cylinders for throw-on or throw-off movements and in the axial direction of the cylinders or in the side-wall plane. The service apparatus and the printing-unit cylinders are arranged on cross slides which can each be moved in two directions relative to the printing-unit side wall.

Abstract: The invention relates to a washing installation for printing press cylinders. A free-wheel drive (22) of a dirty-cloth roller (12) draws a section of a washing cloth from a clean-cloth roller (10) in each case via a pressing element (18) onto the dirty-cloth roller when a washing bar (4) that carries said components is returned from a washing position to a base position, and in the process a cloth transport lever (28) of the free-wheel drive catches on a first stop that is fastened to a holding device in which the washing bar (4) is guided. When the washing bar is inserted into the guides of the holding device, a lever arm (38) of the cloth transport lever (28) catches on a second stop that is provided on the holding device. This has the effect of moving the cloth transport lever (28) past the first stop (26) and simultaneously advancing the cloth from the clean-cloth roller (10) to the dirty-cloth roller (12).