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: A non-aqueous composition cleaning system and method for a printing press recirculation system. The cleaning system comprises two powdered compositions, each composition being applied individually to the recirculation system in a two-step process. The first composition is prepared by dry blending 15-30% by weight of an alkaline cleaning agent, 15-30% by weight of a detergent salt, 15-30% by weight of an emulsifying/wetting agent, 15-30% by weight of a silicone antifoam and 0-10% by weight of a free-flowing silica additive. The second composition is prepared by dry blending 20-40% by weight of an organic acid and 60-80% by weight of a non-foaming detergent/wetting agent. The method comprises dissolving 10 to 40 grams of the first composition in 45 to 200 milliliters of water for each gallon of fountain solution and pouring the resultant solution into the printing press recirculation system. The resultant mixture is then allowed to recirculate for at least 30 minutes.

Abstract: A printing machine has a subassembly couplable therewith and being insertable therein. The subassembly includes a rotor mounted in a mounting which allows, in addition to a rotation of the the rotor about a first axis, a pivoting of the rotor about at least one second axis which is oriented at an angle to the first axis.

Abstract: A self-cleaning web-threading apparatus for a web-fed printing press includes guide rails, a web leader, driver and a detergent supply. The guide rails define a web guideway along which a web is to be threaded through a printing press. The web leader travels along the web guideway in sliding engagement with the guide rails for threading the web through the press. The web leader is fabricated at least partially from a detergent-absorbent material for sliding contact with the guide rails. The driver drives the web leader along the web guideway. The detergent supply is disposed in a selected position on the web guideway for supplying a detergent to the web leader traveling along the web guideway to impregnate it with the detergent. The guide rails are cleaned by the detergent-impregnated web leader as it travels in sliding contact therewith.

Abstract: The invention relates to a method and an apparatus for cleaning from the outer surface of an endless transport belt the ink, not ejected for printing purposes, of an inkjet printer, said method and apparatus serving for completely removing and collecting the ink adhering to the transport belt, while retaining a high transport belt speed. The method is characterized by the application of a converging compressed-air stream onto the outer surface of the ink-wetted transport belt by means of an air conduit, comprising a suction nozzle, of a pressure nozzle, and by extraction of the resulting ink-air mixture by means of the suction nozzle, the two steps being performed simultaneously.

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 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 method of cleaning an imaged printing form having a silicone-based non-printing layer, which includes exerting a defined contact pressure by a cleaning arrangement on a printing-form surface to be cleaned, and moving at least one of the printing form and the cleaning arrangement relative to the other, further includes applying cleaning fluid to the printing-form surface to be cleaned, the cleaning fluid, besides water, containing a cleaning concentrate as a component, the cleaning concentrate having 1 to 30 percent by weight of an anionic surfactant and 1 to 30 percent by weight of a nonionic surfactant; and a cleaning fluid for cleaning a printing form.

Abstract: A method of removing from a printing machine, with the aid of a traverse of the printing machine, a cleaning device assigned to a cylinder, which comprises, in a first method step, shifting the traverse out of a parallel position relative to the cylinder, wherein a side wall of the printing machine blocks a movement of the cleaning device, guided by the traverse, out of the printing machine, into an inclined position relative to the cylinder, the cleaning device guided by the traverse being movable past an outer contour of the side wall or through an opening formed in the side wall, and out of the printing machine, and, in a second method step, moving the cleaning device, guided by the traverse, in the longitudinal direction of the traverse and out of the printing machine; an assembly for performing the method; and a printing machine having at least one assembly for performing the method.

Abstract: A recording apparatus removes foreign objects adhering to a recording medium over a long period of time, so that images having no defects caused by foreign objects are obtained over a long period of time. The recording apparatus includes a recording medium supply section, a recording medium conveyance section, a record medium cutting section, and a recording section. An adhesive rubber roller containing TiOx (titanium oxide) and a hydrocarbon compound, having a functional group of C—O or Si—O and not containing Ba (barium), is used in at least one of the recording medium supply section, recording medium conveyance section, recording medium cutting section and recording section.

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: An apparatus and method for removing and cleaning ink from an ink fountain in a rotary printing press. The ink fountain includes an ink fountain container having a fountain roll disposed adjacent an open side thereof. The apparatus includes a scraping device for forcing ink from the container in the direction of the inking roll, and a metering device disposed between the container and fountain roll which is movable to an open position to form a gap between the fountain roll and container through which ink forced by the scraping device is directed into an underlying catching trough. The container further includes a doctor blade positionable into adjacent relation to the fountain roll for removing ink from the fountain roll during a cleaning operation and directing the removed ink into the catching trough so as to preclude contamination of the downstream roll train of the inking unit.

Abstract: A scraping machine for scraping glue off of a screen printing frame that includes a base adapted to support a screen printing frame. A first actuator is mounted on the base and has a carriage movable by the first actuator. A scraper vibrator is pivotally mounted to the carriage and imparts a vibration to the scraper blade. A second actuator is used to pivot the scraping blade into and out of contact with a surface of the screen printing frame to be scraped. When the scraping blade is in contact with the screen printing frame, the first actuator is used to move the scraping blade across a surface of the screen printing frame.

Abstract: An apparatus for cleaning a tubular printing blanket, comprises a first end cap mounted to a first end portion of the tubular printing blanket; a second end cap mounted to a second end portion of the tubular printing blanket, a compressed air inlet passing through the first end cap; a compressed air supply coupled to the compress air inlet for supplying compressed air to the inside of the tubular printing blanket for stiffening the tubular printing blanket during a cleaning operation; and a cleaning element which interacts with the outside surface of the tubular printing blanket, for cleaning the tubular printing blanket.

Abstract: A device for cleaning the outer surface of rotary cylinders and the like (2) comprising a pair of rotatable members (9, 11) for unwinding and rewinding a fabric (10), a presser means (12) cooperating with the fabric (10), means (50) for feeding onto the fabric (10) a liquid for cleaning the cylinder (2), and means (51) for feeding drying air onto the rotary cylinder (2), in which the pair of rotatable members (9, 11), the presser means (12) and the detergent liquid feeding means pertain to a cleaning assembly (6) movable by pneumatic drive away from and towards the rotary cylinder (2).

Abstract: A wiping device of an intaglio printing press comprises a liquid tank storing a cleaning liquid inside, a wiping roll disposed in the liquid tank and contacting a plate of an intaglio cylinder for removing ink on a surface portion of the plate, a base plate disposed in the liquid tank, and a wiping roll cleaning sheet supported by the base plate and contacting a circumferential surface of the wiping roll for removing ink adhering to the circumferential surface of the wiping roll. The wiping roll cleaning sheet comprises a supporting wire net tautly supported on the base plate, a cleaning wire net supported by the supporting wire net so as to contact the circumferential surface of the wiping roll, and an elastic cloth supported by the supporting wire net so as to be interposed between the supporting wire net and the cleaning wire net, for pressing the cleaning wire net against the circumferential surface of the wiping roll. The wiping device requires less labor for maintenance and check.

Abstract: A cleaning device in a printing machine includes a cleaning tool and a tilting clamp mechanism for holding the cleaning tool in different positions. The cleaning tool and the tilting clamp mechanism are coupled to, and can be decoupled from, each other by a coupling device. A printing machine having a cleaning device is also provided.

Abstract: A method for removing a cleaning device from a printing machine and for inserting the cleaning device or another cleaning device into the printing machine, the inserted cleaning device being secured in position in the printing machine by a fixing device, includes opening a protective covering of the printing machine and automatically inactivating the fixing device by the opening of the protective covering, removing the cleaning device from the printing machine through an opening in the printing machine exposed by the protective covering, inserting the respective cleaning device into the printing machine, and closing the protective covering and automatically activating the cleaning device by the closing of the protective covering, so that the inserted cleaning device is secured in the inserted position thereof; and a printing machine for performing the method.

Abstract: An image-forming material removing apparatus capable of continuously peeling image-forming material such as toner from the recording medium while, with simple structure, maintaining high quality will be provided.

Abstract: A printing unit includes rotating blanket cylinders (4, 5) and rotating plate cylinders (6, 7). Said rotating cylinders (4, 5; 6, 7) each have bearers (16) assigned to respective front sides thereof. Surface cleaning units (11) are assigned to respective surfaces (17, 34) of said bearers (16), said cleaning units (11) having quick clamps (21, 22; 27, 28) for quick clamping of wiper elements (12).

Abstract: A cleaning device for a printing press, having a cloth spindle formed with a longitudinal groove, and a cleaning cloth clampable in the longitudinal groove, comprising a clamping body rotatable inside the longitudinal groove out of a first position, wherein clamping of the cleaning cloth is undone, and into a second position, wherein the cleaning cloth is clamped between the clamping body and an inner face defining the longitudinal groove; and a printing press and, more particularly, a rotary printing press, in combination with the cleaning device.

Abstract: An apparatus for cleaning a roller for a liquid printer includes a first cleaning unit and second cleaning unit. Foreign materials adhering on the transfer roller are removed from the surface of the transfer roller and transferred to the cleaning roller of the first cleaning unit. A cleaning web of the second cleaning unit is used for removing foreign materials from the surface of the cleaning roller of the first cleaning unit. The surface of the transfer roller is prevented from contamination. Also, the transfer roller can transfer clear images to the paper.

Abstract: According to the invention, there is provided a cylinder cleaning device for use with a cleaning fabric supply roll having a cleaning fabric wound thereon. The cleaning fabric is supplied from the supply roll and pressed against the outer surface of a cylinder to clean the outer surface of the cylinder. The device comprises frame means and roll receiving means mounted on the frame means. The outer surface of the supply roll is engaged with and received by the receiving means. The device further comprises roll stabilizing means for stabilizing the supply roll on the receiving means when the supply roll is rotated on the receiving means to supply the cleaning fabric and have a diameter correspondingly decreasing.

Abstract: A system for cleaning a web surface including an axially oscillable contact cleaning roller (CCR) positionable to be in contact with the web surface on a free-span of the web. The CCR, which may be mounted in a frame, enjoys a wrap angle greater than 0.degree. and may also be positionable to be out of contact with the web for renewal of the CCR surface. The increased CCR wrap angle can improve the efficiency of particle removal relative to a nipped CCR installation. Either the frame or the roller itself is oscillable such that the CCR may be moved transversely of the web while in rolling contact with the web surface to distribute particles associated with the edges of the web over a broader area of the CCR. Preferably, the ratio of oscillation velocity to web velocity is less than about 0.01 and preferably the web tension is greater than about 0.5 pounds per inch of web width. Plastic and paper webs having a thickness as low as about 0.001 inch may be readily cleaned without wrinkling.

Abstract: A method and devices for cleaning an inking system of a printing machine in which a further drive of the inking system (1) is used for the reverse transport of the ink into the ink fountain (4), while the clock-pulse movement of vibrator roller (5) between ductor roller (6) and distributor roller (7) continues to take place, and that only after this reverse transport of the ink is the customary cleaning of the inking system (1) carried out.

Abstract: There is disclosed a device for cleaning the cylinder of a printing press with a cleaning fabric. The device comprises a pad including a surface opposed to the cylinder. The cleaning fabric is directed between the surface of the pad and the cylinder, the surface of the pad being at least partially uneven. The device further comprises means for moving the surface of the pad toward the cylinder so that the cleaning fabric is pressed against the cylinder by the pad to clean the cylinder.

Abstract: A fixing device for a wet type master sheet making apparatus for making a master sheet has a heated panel for fixing and drying a developed image on the master sheet while the master sheet moves on the panel, and a cleaning web placed between a surface of the panel and the master sheet to absorb extra developing liquid on the master sheet while the master sheet moves on the panel. The fixing device has web winding means for winding the web to move the web along the surface of the panel, and actuating means for selectively actuating the winding means by one of manual and electrical operations. Therefore, the user can easily and quickly tension the cleaning web to make the cleaning web tightly contact the surface of the panel by manually actuating the winding means when the cleaning web is replaced.

Abstract: A printing machine has a printing cylinder receiving printing substrates for printing. A cleaning device for cleaning the printing substrates transferred to the printing cylinder is provided. The cleaning device has a slotted nozzle connected to a vacuum source and having a slot opening. The cleaning device includes a compressed air conduit extending perpendicularly to the direction of movement of the printing substrates. The compressed air conduit is arranged centrally in the slot opening and extends in the longitudinal direction of the slot opening such that on opposite sides of the compressed air conduit two slots are formed in the longitudinal direction. The compressed air conduit has compressed air outlets directing the air flow onto the printing substrates. The compressed air outlets have a diameter of 2 mm to 4 mm and the air nozzle has a width of 15 mm to 25 mm.

Abstract: A method for multicolor printing of stock in web or plate form and having a smooth, nonabsorbent surface, includes printing on the stock by the indirect flexographic printing process; assigning each color to be printed to a respective printing unit which includes an inking unit, a cylinder for a flexographic printing form, a transfer cylinder and a counterpressure cylinder; always drying the ink on the stock before passing the stock to the next printing unit; and removing ink located in indentations and on sides, respectively, of the printing surfaces of the flexographic printing form; and a printing press for printing in accordance with the method.

Abstract: In a method for repeatedly using an image holding member such as a sheet of paper, toner for an electronic photograph is constructed such that a maximum value of viscoelasticity of the toner shown by tan .delta. is equal to or smaller than 3 in the range of a heating temperature when the toner is heated and fixed to the image holding member. Such toner has sufficient elastic or cohesive force. Accordingly, when the toner is heated and fixed to the paper sheet, no excessive adhesive force is caused to such an extent that paper fibers of the paper sheet eat into the toner attached to the paper sheet. Accordingly, after an aqueous solution including a surfactant is supplied to the paper sheet by a liquid supplying unit, the toner is softened by heat from heating rollers so that the toner is attached to a surface of an offset belt.

Abstract: An ink squeezing device for an anilox roll comprises a doctor blade adapted to contact the roll at an angle against the direction of rotation of the roll, and a bank member supporting the doctor blade along the anilox roll. An ink fountain is formed by the doctor blade, the anilox roll, the bank member and a pair of dam members. The ink squeezing device is coupled to a pressure cylinder device for pressing the doctor blade against the anilox roll. The cylinder device presses the doctor blade against the anilox roll during printing and during cleaning of the anilox roll. The doctor blade also serves the function of scraping off a cleaning liquid from anilox roll during cleaning of the roll.

Abstract: A method of cleaning the outer surface of a cylinder by using a cleaning fabric intermittently fed from a supply, and engaged with and pressed against the outer surface of the cylinder. The method includes predetermining periods for each of which the cleaning fabric is engaged with the outer surface of the cylinder a time so that at least some of the periods are different in length from other periods in a cleaning cycle.

Abstract: According to the invention, there is provided a cylinder cleaning device for use with a cleaning fabric supply roll having a cleaning fabric wound thereon. The cleaning fabric is supplied from the supply roll and pressed against the outer surface of a cylinder to clean the outer surface of the cylinder. The device comprises frame means and roll receiving means mounted on the frame means. The outer surface of the supply roll is engaged with and received by the receiving means. The device further comprises roll stabilizing means for stabilizing the supply roll on the receiving means when the supply roll is rotated on the receiving means to supply the cleaning fabric and have a diameter correspondingly decreasing.

Abstract: An adapter for converting an existing under screen cleaning apparatus from one which uses a solvent to a solventless under screen cleaning apparatus. The adapter fits within the vacuum channel and between the blades of a known under screen cleaning apparatus. The adapter extends above the top edges of the blades and provides a top surface with at least three lands and a plurality of slots. An interior hole within the adapter connects the slots with a vacuum outlet of the vacuum channel. Optionally, suction is applied to the slots by pumping air from the vacuum outlet.

Abstract: In a print head of a postage meter of the type having a rotary drum, said print head being provided with a set of engraved printing surfaces, which set has at least first print wheels for printing a postage value and second print wheels for printing a current date, and said postage meter including an inking support on which an inking roller is mounted for the purpose of inking the print head, firstly the inking roller is replaced with the cleaning roller, then the motor of the print head is actuated for a determined duration, and, at the end of said determined duration, the inking roller is put back into place after the cleaning roller has been removed. The invention also relates to a a corresponding cleaning system, and to a postage meter incorporating such a system.

Abstract: A contact cleaning roller (CCR) system includes a shell having an electrostatically active outer surface and being supported by a close-fitting rotatable shaft. The shaft within the shell is provided with a cam groove extending from a first axial location to a second axial location disposed 180.degree. from the first axial location, and then back to the first axial location. A cam follower attached to the inner surface of the shell rides in the cam groove, causing the shell to oscillate axially of the shaft at a frequency of oscillation which is the numerical difference between the rotational frequencies of the shell and shaft. In a preferred embodiment, the CCR shell is nipped against a backing roller, which may be an idle roller or a driven roller, the web passing therebetween in contact with the working surfaces of both rollers.

Abstract: The cylinder cleaning device according to the present invention is structured by independent components of a cleaning fabric supply element, a cleaning fabric take-up section, a cleaning fabric pressing section, and a brake section. The cleaning fabric supply element is formed by a flat box-form container. A shape-retaining member is provided on or in the vicinity of an inner surface of said container facing to a crease portion and/or a lateral portion of the cleaning fabric folded in multiplicity so as to act on the crease portion and/or the lateral portion of the cleaning fabric for retaining a folded shape of the cleaning fabric. The cleaning fabric supply element, the cleaning fabric take-up section, the brake section can desirably be arranged in a vacant space around the cylinder. Therefore, even in an existing machine the design for device structure is easy to design in a manner adapted for a vacant space without carrying out especial working.

Abstract: A dispenser apparatus (36) permits dispensing from different model machines sheet material from a standard size supply roll (40), mounted as part of a supply roll member (38) on a support bar (46) having a locator (48a, 48b) which adapts the dispenser apparatus (36) to be mounted on any one of a variety of models of under-stencil wipe fixtures (26). Support bar (46) has a plurality of radial bores (52a-52d) to enable positioning supply roll member (38) at a selected longitudinal position in support bar (46) to permit aligning the supply roll (40) with a given cut-out pattern (18) on stencil (16). Supply roll member (38) comprises a supply roll (40) mounted on a core member (42) having a core member extension (42a) which protrudes beyond supply roll (40) and has a radial bore (42b) for mounting supply roll member (38) on support bar (46) by screw fastener(54).

Abstract: A main wiping portion which contacts the back of a mask through a cleaning paper is provided behind a suction port as viewed in the direction of movement of an air suction portion. The cleaning paper is able to wipe off both solder paste adhered on the back of the mask and solder paste discharged from openings of the mask by suction through the suction port, whereby the solder paste deposits on the mask can be cleaned off at high removal efficiency.

Abstract: A fixing apparatus for a wet-type plate making machine, which includes panel heaters 13 and 14 for fixation and drying of an electrostatic latent image an a front surface of a master X after development with developing solution and a cleaning web 20 that is laid over top surfaces of the aforenamed panel heaters 13 and 14 and that will be wound around a web take-up bobbin 20B that is disposed at an end of the same panel heater 14, and which also includes a web take-up shaft 27 that has a bobbin attachment and 27a for supporting of the aforenamed web take-up bobbin 20B and a manual operation end 27b that can be turned freely with finger tips, a first one way clutch 31 that is fitted on the take-up shaft 27 and that transmits revolving movements of a clutch sleeve 31a that is reciprocally revolved by a solenoid 29 at the apparatus securing part but transmits only those in one direction to the aforenamed take-up shaft 27, and a second one way clutch 36 that in fitted on the take-up shaft 27 and that allows forced

Abstract: A dry cleaning system for removing dust and lint on the fly from blanket cylinders in offset printing presses. The cleaning system includes a relatively small brush mounted for rotation about an axis substantially perpendicular to the rotational axis of the blanket cylinder. In operation, the brush can be reciprocally moved across the surface of the blanket cylinder and selectively moved into and out of contact with the blanket cylinder. The contact pressure of the brush is pneumatically controlled to maintain a predetermined, set pressure and the brush automatically retracts should the pressure source fail. The system can be operated to clean the entire width of the blanket cylinder or only the portion of it actually being used to print. A vacuum pickup is included with its separately mounted housing and the entire cleaning system is carried on a unitary support structure that is removably secured at its ends for quick and easy installation and removal.

Abstract: An apparatus for developing a cylindrical surface in a printing press that has a device for writing and/or imaging on a rotatable printing form cylinder, the cylinder having a silicon-containing operating surface, the apparatus comprising a rotatable cleaning roller, an elastic cover and a fabric blanket over the cleaning roller, the cleaning roller having an optionally wettable cleaning surface, means for rotating the cleaning roller synchronously with or in opposition to the rotation of the printing form cylinder, means for selectively establishing and breaking contact between the cleaning roller and the printing form cylinder, whereby silicon particles created on the operating surface during writing and/or imaging are removed by contact between the operating surface and the cleaning cylinder.

Abstract: A cleaning device for cleaning an outer cylindrical surface of an impression cylinder of a rotary printing machine includes a cleaning cloth pressed against the outer cylindrical surface by a beam. The beam is pivotally mounted to engage the cleaning cloth with the outer cylindrical surface upon pressurization of a pneumatic cylinder. A spring pivotally returns the beam to disengage the cleaning cloth with the outer cylindrical surface upon depressurization of the pneumatic cylinder. To assure radial clearance between the cleaning device and the gripper fingers of the impression cylinder, the pneumatic cylinder is depressurized at a first angular position of the impression cylinder and the pneumatic cylinder is subsequently pressurized at a second angular position of the impression cylinder.

Abstract: Web displacing apparatus selectively displaces a web between a first position engaging a fluid source and a second position spaced from the fluid source. A web drive is constructed and arranged to move the web in a direction from the fluid source toward a surface for engagement with the web for receiving fluid carried by the web from the fluid source. Web moving structure is constructed and arranged to selectively move the web between the first and second positions.

Abstract: A cleaning device for cleaning a screen plate used in a screen printing is disclosed. The cleaning device comprises a base structure which can be placed just below the screen plate. A press member, such as a cleaning blade or cleaning roller is carried on the base structure The press member has a contact portion which contacts a lower surface of the screen plate to scrape off any foreign things from the lower surface when the base structure is moved in a direction parallel with a major surface of the screen plate. In some embodiments, a cleaning paper wet with a solvent is intimately put between the contact portion of the press member and the lower surface of the screen plate to promote the cleaning effect.

Abstract: A device for washing outer cylindrical surfaces of a rotary printing machine is disclosed. The device uses a washing cloth which is unwound from a supply roll and, via a pressing-on rail, supplied to a take-up roll. The washing cloth is pressable by the pressing-on rail against the outer cylindrical surface to be washed. To simplify operation only the two washing-cloth rolls with the washing cloth are changed and the other components of the washup device remain inside the machine.

Abstract: A cleaning device provided on a rotary printing machine for cleaning the outer cylindrical surfaces of cylinders includes a pressing-on bar for pressing a cleaning cloth on a respective outer cylindrical surface, adjusting elements for engaging the pressing-on bar, and an elastic profile rail to guide and press a cleaning cloth onto an outer cylindrical surface over the entire cylinder width. The elastic profile rail receives a plurality of forces from spring elements. The elastic profile rail and the spring elements allow a uniform cleaning of the outer cylindrical surface despite the presence of uneven or rough portions of the outer cylindrical surface that might be encountered by the cleaning device during cleaning.

Abstract: A cleaning apparatus designed for use in conjunction with a lithographic printing member associated with a rotary cylinder comprises an elastomeric (preferably foam) roller for making rotating contact with the printing member; a fixed screen; and a brush in rotating contact with the roller and with the screen. The roller may extend axially at least across the imaging region of the printing member (i.e., that portion of the imaging member that actually receives the image to be printed). The elastomeric roller removes imaging debris from the cylinder, while the brush removes from the roller debris that would otherwise accumulate therein. As the brush rotates past the screen, it sheds debris withdrawn from the roller; debris passing through the screen may be collected, for example, in a container or removed from the system by vacuum. The system may also include one or more doctor blades in contact with the roller for removing debris remaining on the roller following its contact with the brush.

Abstract: A cleaning apparatus for a rotary printing press includes a cleaning blade, a cleaning cloth, and a cleaning unit and air cylinders, or an air cylinder, a guide shift mechanism, and a cleaning cloth travel mechanism. The cleaning blade has a distal end portion which abuts against the circumferential surface of an oscillating roller during a cleaning operation to scrape a waste ink, and a rear surface continuous to the distal end portion to guide the scraped waste ink downward. The cleaning cloth travels during the cleaning operation done by the cleaning blade to collect the waste ink scraped by the cleaning blade. The cleaning unit and air cylinders, or the air cylinder, the guide shift mechanism, and the cleaning cloth travel mechanism bring the cleaning cloth into contact with the rear surface of the cleaning blade, when the distal end portion of the cleaning blade is in contact with the circumferential surface of the oscillating roller, to collect the waste ink on the cleaning blade.

Abstract: A contact cleaning roller (CCR) system includes a shell having an electrostatically active outer surface and being supported by a close-fitting rotatable shaft. The shaft within the shell is provided with a cam groove extending from a first axial location to a second axial location disposed 180.degree. from the first axial location, and then back to the first axial location. A cam follower attached to the inner surface of the shell rides in the cam groove, causing the shell to oscillate axially of the shaft at a frequency of oscillation which is the numerical difference between the rotational frequencies of the shell and shaft. In a preferred embodiment, the CCR shell is nipped against a backing roller, which may be an idle roller or a driven roller, the web passing therebetween in contact with the working surfaces of both rollers.