Abstract: A printing device, a patterning method using the same and a method of fabricating an LCD device using the same are disclosed. The printing device includes a printing roll having a blanket adhered to an outer surface thereof; and an absorption nozzle to absorb solvent from the blanket. The absorption nozzle may include an absorber having a slit, a vacuum controller connected to the absorber, and a pipe connected to the vacuum controller.

Abstract: A printing system comprises a moving rail, a cliché plate and a substrate positioned on the moving rail, a printing roller that transcribes a pattern material on the substrate by passing through the cliché plate. The printing system further comprises a cleaning unit that cleans the cliché plate.

Abstract: Provided is a method of cleaning a flexible substrate. The method includes the steps of: preparing a flexible substrate and detaching an impurity adhered to both surfaces of the flexible substrate using rotating first rollers disposed on the both surfaces of the flexible substrate; and removing the impurity by transferring the impurity from the first roller to a second roller using the rotating second roller having a relatively higher adhesion than the first roller.

Abstract: A guide element for guiding a cleaning apparatus of a printing press contains a diverter which is configured such that it can be switched by the cleaning apparatus. The guide element can be operated manually and is therefore comparatively uncomplicated. An adjusting drive for the diverter is not present, as it is not required. The guide element is suitable for occasional maintenance work, in which the cleaning apparatus has to be removed from the printing press and introduced again.

Abstract: An apparatus for efficiently cleaning a platen roller of a printer. A cleaning unit is attached to a main unit in place of a removal unit for an intermediate transfer sheet. A cam is turned by means of turning an arm UP/DOWN lever, and the arm is turned from an UP position to a DOWN position by means of the cam, to thus bring a cleaning pad on a leading end of the arm into contact with a platen roller and perform cleaning operation. When an operation mode is set to a cleaning mode and when attachment of the cleaning unit UC is detected, the platen roller is rotated, thereby allowing cleaning operation.

Abstract: An ink-jet recording apparatus has rollers, a conveyor belt, a conveyor belt driving mechanism, an ink-jet head, an absorber, a scraper, a supplier, and a supply controller. The conveyor belt spans the rollers. The driving mechanism rotates the rollers to move a record medium disposed on one surface of the conveyor belt in a predetermined conveyance direction. The absorber absorbs cleaning fluid and contacts and applies the cleaning fluid to the one surface of the conveyor belt. The scraper comes into contact with the one surface of the conveyor belt and scrapes the cleaning fluid attached to the one surface. The supplier supplies cleaning fluid to the absorber. The supply controller controls a supply of cleaning fluid from the supplier to the absorber, so that the supply controller makes the supplier supply cleaning fluid to the absorber in response to a print command, for a first period of time before the driving mechanism rotates the rollers to make the conveyor belt start traveling.

Abstract: A method for feeding a photopolymerised elastomeric printing plate, subsequent to exposure and washing out thereof, along a path through a rinsing station, comprises: optionally providing a plate assembly comprising the plate and, supporting the plate, a carrier having a pair of opposed peripheral regions each extending laterally beyond respective opposed lateral edge regions of the plate, providing, transversely of the path, at least one pair of driven rollers (8, 13) defining a nip therebetween through which the plate can pass so as to be forwarded along the path by frictional engagement of the plate or plate assembly with each of the driven rollers within the nip, at least one of which rollers is profiled so as (a) to allow contact of the profiled roller with the opposed lateral edge regions of the plate or, when provided, corresponding opposed peripheral regions of the plate assembly, thereby to allow the said frictional engagement, but (b) to allow freedom from contact of the plate with the or each profi

Abstract: A washing device for a cylinder in a printing press includes a washing cloth for removing contaminants and ink, etc. from the surface of the cylinder and an ultrasonic source directing sound energy onto the surface of the cylinder to assist a washing operation. A focusing device disposed in front of the ultrasonic source concentrates the sound energy on a substantially linear focus region on the surface of the cylinder, extending parallel to the axis of the cylinder.

Abstract: When the plate cylinder (D) is provided with at least one longitudinal channel (C) housing the sheet grippers (P) and when the ends of this channel have cams (Z) for contact with rollers mounted on the cleaning assembly, to ensure that when this assembly is actively working the presser (6) and cloth (T) do not interfere with the said grippers as they pass the said channel (C), the shoulders (2) of the said cleaning assembly are held stationary and the said cams (Z) of the cylinder (D) contact directly, or via interposed means, rollers (20) located at the ends of the presser (6), in such a way as to move only this component rather than the whole cleaning assembly as in the prior art. Compensating means are provided to cause the active length of cloth to remain suitably tensioned in the longitudinal direction and promptly to follow the presser's (6) movements of extension and retraction.

Abstract: A cleaning apparatus includes a first liquid supply unit, second cylinder, cleaning unit, third cylinder, second liquid supply unit, first cleaning liquid supply unit, and controller. The first liquid supply unit supplies a transfer liquid to a first cylinder. The second cylinder performs transfer to one surface of a transfer target body with the transfer liquid transferred from the first cylinder. The cleaning unit cleans the circumferential surface of the second cylinder in contact with it. The third cylinder is arranged to oppose the second cylinder and performs transfer to the other surface of the transfer target body. The second liquid supply unit supplies the transfer liquid to the third cylinder. The first cleaning liquid supply unit supplies a cleaning liquid to at least one of the first cylinder and the third cylinder. The controller controls the control unit to clean the second cylinder while the second cylinder is in contact with the first cylinder and the third cylinder.

Abstract: An apparatus and method for cleaning guide rollers of a printing unit, particularly a 9-cylinder satellite printing unit, of a web-fed printing press, is disclosed. A cleaning device having a cleaning body fastened to an actuating grip is insertable between the guide rollers of the printing unit. A cleaning cloth that can be wetted with cleaning fluid can be fastened to the cleaning body, and the cleaning body features cleaning surfaces on opposing sides that are adapted to the contour of the guide rollers.

Abstract: A sheet carrier apparatus includes a sheet carrier guide to guide a sheet in a first direction and includes an opening; and a paper-dust removal member that is arranged substantially above the opening and so as to make a contact with the sheet carried on the sheet carrier guide, is extending in a second direction orthogonal to the first direction, and removes paper dust so that the paper dust falls through the opening. In the sheet carrier apparatus, the paper-dust removal member includes a first part and a second part that are arranged along the second direction, and the first part and the second part have a different contact resistance against the sheet.

Abstract: A doctor blade device (01) for cleaning a surface has a doctor blade (03) and a tub (09) for receiving the material stripped from the surface by the doctor blade. The doctor blade is movable between a position in which it projects out of an opening (13) of the tub and a position in which it is submerged in the tub. A closure element (07) closes the opening in the submerged position of the doctor blade.

Abstract: A sheet conveying unit that guides and conveys a sheet material by a lower conveying guide includes an opening in the lower conveying guide, a brush-like member on a downstream side of the opening to scrap off paper dust adhered on a surface of a sheet material. A sheet detecting unit controls operation of the brush-like member.

Abstract: A printing device, a patterning method using the same and a method of fabricating an LCD device using the same are disclosed. The printing device includes a printing roll having a blanket adhered to an outer surface thereof; and an absorption nozzle to absorb solvent from the blanket. The absorption nozzle may include an absorber having a slit, a vacuum controller connected to the absorber, and a pipe connected to the vacuum controller.

Abstract: In the recording apparatus 121, a recording medium fixing member 123 having a plurality of suction ports on the fixed surface to fix the recording medium 101; an adhering roller 143 which can contact with or separate from the recording medium fixing member 123 and which cleans the fixed surface; a flexible plate 137 which is attached onto the fixed surface of the recording medium fixing member 123 and whose contact surface with the recording medium is cleaned by the adhering roller 143; and a suction apparatus for recording medium fixing which sucks the air from the suction ports of the recording medium fixing member 123 and sucks and fixes the flexible plate 137 and the recording medium 101 onto the fixed surface of the recording medium fixing member 123, are provided.

Abstract: A method and apparatus for the rapid cooling of screen masks used in the fabrication of semiconductor components is provided. The method and apparatus use a specially designed cooling plate which is contacted with a mask frame holding the screening mask. After a heated cleaning step which cleans the mask frame and screening mask of metal paste used in the screening operation, the cooling plate having one or more concave lower surfaces contacts the upper surfaces of the mask frame and bends the mask frame in the shape of the concave surfaces. This ensures intimate contact between the cooling plate and mask frame and enhances the thermal efficiency of the cooling step.

Abstract: A vacuum plenum module of a stencil wiper assembly for wiping and removing excess material from a stencil of a stencil printer includes a wiper blade to wipe the stencil, a plenum chamber in fluid communication with the wiper blade, and a vacuum generator attached to and in fluid communication with the plenum chamber to create a vacuum within the plenum chamber. The vacuum plenum module further includes a fluid supply to introduce pressurized fluid into the vacuum generator, and an exhaust to exhaust fluid from the vacuum generator. The vacuum generator includes at least one vacuum ejector adapted to create the vacuum. The vacuum plenum module is further configured to move between a first position in which the vacuum plenum is spaced away from the stencil and a second position in which the vacuum plenum engages the stencil. A method of cleaning a stencil is further disclosed.

Abstract: An erasing and cleaning apparatus for cylinders an erasing and cleaning apparatus for cylindrical surfaces in a printing press includes a positioning unit with side walls and a cleaning cloth transport device arranged in said positioning unit and having a clean cloth roll, a wash roll, and a dirty cloth roll. An intermittently operated pneumatic or hydraulic linear drive having a stroke movement is connected to said cleaning cloth transport device for advancing a cleaning cloth off of the clean cloth roll, over the wash roll, and onto the dirty cloth roll. At least one of the sidewalls includes bearing elements for the clean cloth roll, the wash roll, and the dirty cloth roll. A gearwheel is connected to one of the bearing elements by one of a freewheeling and overrunning clutch for converting the stroke movement of the drive into a rotary movement.

Abstract: A quick-change material module of a stencil wiper assembly for wiping a stencil of a stencil printer includes a supply roller to receive a roll of material, a take-up roller to receive used material, and a drive to move the material across the stencil between the supply roller and the take-up roller. The supply roller is designed to move between an operating position in which the module functions to wipe the stencil and a changing position in which the supply roller is accessible to change the roll of material. A pivot mechanism is further disclosed for pivoting the supply roller between the operating and changing positions. A frame supports the supply roller, the take-up roller, and the drive. The pivot mechanism includes at least one pivot arm having one end rotatably attached to the supply roller and an opposite end pivotably attached to the frame.

Abstract: An improved method and system for cleaning a cylinder of a printing press. One method involves soaking a strip of cleaning fabric on a press with a low volatility organic compound solvent. Excess solvent, if any, is removed to place the strip of cleaning fabric in functional equilibrium with the solvent. The cleaning fabric is then used to clean a cylinder. Alternatively, the strip of cleaning fabric is soaked on site by contacting the strip of cleaning fabric with the solvent and wrapping the strip of cleaning fabric into a cleaning fabric supply roll. The cleaning fabric is then brought in engagement with a printing press having a cylinder to be cleaned without disposing a sleeve around the fabric roll and without substantially disturbing the distribution of the solvent in the fabric roll and detrimentally affecting the cleaning ability of the fabric.

Abstract: A non-flowing protective medium is applied in a finely distributed manner through a metering nozzle by means of blown air to the non-printing regions of at least one roll of an inking unit or damping unit and/or the non-printing regions of at least one transfer cylinder or forme cylinder, forming a thin-layer protective film. Ink is thereby prevented from drying out in non-printing regions of the rolls and cylinders of the printing unit, and the tack is thus kept at a low level, in order to reduce the risk of web breaks.

Abstract: A doctor blade device for the removal of dampening medium from a soft surface of an ink applicator roller in the inking unit of a printing machine, having at least one doctor blade placed against the surface of the roller and having an edge radius in the range of 2 mm to 10 mm.

Abstract: Keyless inking and dampening systems and methods are disclosed which employ application, subtractive and dampening roller systems to control the ink/dampening fluid film on the form roller. A clean-up roller removes residual ink from non-image areas on the printing plate.

Abstract: During a washing cycle of a rubber blanket on a blanket cylinder some revolutions of the blanket cylinder are initially performed during which the cleaning element is lifted off the blanket cylinder temporarily when the clamping channel passes under the cleaning element.

Abstract: A washing device for an impression cylinder jacket in a sheet-fed offset two-sided printing press equipped with an impression cylinder installed with a jacket having a metal plate, a base layer formed to have concave-convex profile on the surface of the metal plate and a low surface energy resin layer formed on the base layer, includes a controller that executes a first control of causing a plate cylinder to contact with a blanket cylinder as well as the blanket cylinder to contact with the impression cylinder, and causes each cylinder to rotate under those contacts for a specified period of time while a cleaning unit is in contact with the blanket cylinder; and a second control of separating the plate cylinder from the blanket cylinder, and causing a water form roller and an ink form roller with the plate cylinder.

Abstract: In a printing system where ink from an applicator roller is applied to a form roller in rotational contact with a plate cylinder, methods of washing up after printing in which methods the form roller is disengaged from the plate cylinder and a subtractive roller system removes a mixture of residual ink and ink solvent from the form roller and applicator roller. In preferred embodiments, the press drive is stopped during wash-up and the form roller is independently driven.

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 ?. 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 ?. 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: A debris screen for a printing press having an ink roller train and a paper pathway includes a source reel, a collecting reel, and at least one transfer roller mounted to a supporting frame, a sheet of flexible material extending along a sheet path from the source reel, over the transfer roller, and to the collecting reel, the transfer roller positioned on the frame such that the sheet path extends between a portion of the ink roller train and the pathway for the paper web.

Abstract: Upon replenishing cleaning members 10 of a plurality of 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 of 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 printing machine provided with a rectilinear guide and a cleaning device having a handle for moving the cleaning device along the rectilinear guide includes at least one joint by which the handle is attached to the cleaning device in a manner that the handle is movable relative to the cleaning device.

Abstract: In an exposure device for exposing thermal printing plates having a plate drum holding the printing plates and a pressure roller pressing the pressure plates onto the plate drum during the clamping and unclamping of the printing plates, a device for eliminating combustion residues in an exposer for printing plates includes a pick-up roller in contact with the pressure roller and picking up the combustion residues adhering to the pressure roller. The pick-up roller preferably has an adhesive surface and the pressure roller has a non-adhesive surface.

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: 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: Information carried on a stimulable phosphor sheet can accurately be read therefrom without dust particles being present on the surfaces of the stimulable phosphor sheet. A dust of a first cleaning unit has a first opening for introducing the stimulable phosphor sheet into the duct and a second opening for discharging the stimulable phosphor sheet out of the duct. The duct has an upper housing member which accommodates therein a first brush roller and a third brush roller that extend parallel to each other and a lower housing member which accommodates therein a second brush roller and a fourth brush roller that extend parallel to each other. The upper housing member also houses therein a first dust removing plate having tip ends held against bristles of the first brush roller and the third brush roller, and the lower housing member also houses therein a second dust removing plate having tip ends held against bristles of the second brush roller and the fourth brush roller.

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 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 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: A process and apparatus for gravure printing of an image using an erasable and reusable gravure form including a gravure blank form having a base screen which is designed for accommodating a maximum amount of ink to be transferred. The depressions of the base screen of the gravure blank form are uniformly filled with a liquefiable substance using an applicator device and material is then removed from the depressions in conformity with the intended image using thermal energy applied by an image-point transfer device. The printing form is then linked using an inking system and, finally, is regenerated after the printing process to produce a gravure blank form, wherein the depressions of the base screen are again filled in a uniform manner.

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: 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 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 sheet offset printing method and a sheet offset printing press includes altering flow relationships in an interior of a housing of a sheet delivery of a sheet-fed printing machine to prevent uncontrolled spread of powder in the housing by extracting powder-laden air from the housing and/or feeding air into the housing from outside at a point along a return belt of a sheet conveying device. Air currents are channeled inside the housing by feeding air not laden with powder into the housing and/or leading the air into an air flow path along the return belt downstream of the point with respect to a return belt motion direction to transport the unladen air toward a printing unit by a drag effect of the return belt and/or impeding/blocking a supply of powder-charged air from around a conveyor belt of the sheet-conveyor or a powder-scattering device into a flow path along the return belt.

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: A system and method of a combination and sequencing of a first cleaner around a blanket cylinder, a second cleaner around one of the rollers in an ink form roller assembly, and a fluid applicator around another one of the rollers in the ink form roller assembly effectively clean the press rollers and the blanket cylinder used in a printing machine.

Abstract: The invention concerns a pad-printing ink cup fitted with at least one magnet (10). The minimum of one magnet (10) may be positioned at different heights relative to the plane of the doctor edge (22), the magnetic force effective in the said plane depending on said heights.

Abstract: A system for cleaning a moving substrate includes a rail mounted adjacent to the substrate surface and substantially transverse to the direction of movement thereof. A carriage for supporting a contact cleaning roller (CCR) is deployed on the rail for allowing axial translation of the CCR transversely of the substrate while in rolling contact therewith. Two renewal stations for cleaning the CCR are mounted adjacent the rail, one outboard of each substrate edge. The CCR is at least twice as long as the width of the substrate and is axially oscillable for a distance sufficient that all portions of the CCR surface may be cleaned by the renewal stations during one oscillation cycle of the CCR while the CCR maintains continuous contact with the substrate across the full width thereof. The CCR mounted on the carriage may be a primary CCR and the substrate may be a continuous web or sheet, or the CCR mounted on the carriage may be a secondary CCR and the substrate may be a primary CCR or other process roller.

Abstract: An apparatus for removing residual particles from an imaging surface, including: a cleaning blade having an edge adapted to remove the residual particles from the imaging surface; a vibrating member, connected to said cleaning blade, for vibrating said cleaning blade at a predefine frequency to cause stress in contact points between individual residual particles which are in contact with imaging surface thereby improving releasing of residual particles from the imaging surface.

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: 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).