A blade assembly of a waste catchment system for a roller having a support plate for attachment to a tray of the waste catchment system and a blade holder. The blade holder configured to receive a blade having a longitudinal axis and a free edge extending in the direction of the longitudinal axis and adapted to engage with the roller to be cleaned. The blade holder configured to receive and retain the blade, the blade being removably attachable to the blade holder. One of the blade holder and blades includes a channel and the other of the blade holder and blade includes a protrusion configured to be seated in and retained within the channel. There is a clearance fit between the channel and the protrusion.

A liquid ejecting apparatus including: a liquid ejecting portion configured to eject a liquid from a nozzle disposed in a nozzle surface; a wiping mechanism configured to perform a wiping operation of wiping the nozzle surface by moving a strip-shaped member configured to absorb the liquid relative to the nozzle surface in a state in which the strip-shaped member is in contact with the nozzle surface; and a control portion configured to perform a pre-wiping operation of moving the strip-shaped member relative to the nozzle surface at a speed higher than a speed for the relative movement during the wiping operation in a state in which the strip-shaped member is not in contact with the nozzle surface and is configured to be brought into contact with the liquid adhering to the nozzle surface, prior to the wiping operation of wiping the nozzle surface with the strip-shaped member.

A cleaning device for a surface of a cylinder of a printer and/or a copier includes a cylindrical cleaning element which can be rotated by at least one drive and which includes a cleaning fitting on its outer periphery, and a suction or suctioner conducting at least one suction medium with at least one suction channel aligned towards the outer periphery of the cleaning element and extending along the longitudinal alignment of the cleaning element. In order to achieve a simple technical structure and a low maintenance effort apart from a good cleaning result and reliable dirt removal, a suction slit extending longitudinally of the suction channel is aligned towards the cleaning element opens into the suction channel tangentially to the suction channel cross section.

The present disclosure relates to cleaning a surface in a printing device, wherein a steam guiding member directs a steam flow towards the surface; wherein the steam flow interacts with a substance on said surface to clean a portion of the surface.

A printing system for printing to a recording medium can include a guide, a printer, and a cleaner. The guide can guide the recording medium and be arranged in a first vertically traveling region. The printer having a print bar with a print head can print to the recording medium. The printer can be arranged in a printing position located in the first vertically traveling region, and be displaced, to facilitate the cleaning of the print head, into a service position located in a second vertically traveling region. The cleaner can be adapted to clean the print head. The cleaner can be arranged in a printing position located in the first vertically traveling region, and be displaced into the service position located in the second vertically traveling region to clean the print head. The cleaning can be automatically or manually performed.

An ink fountain of an ink fountain device is provided with a fixed frame; a plate slidable on the upper surface of the plate; and an advancement and retraction mechanism advancing and retracting the plate with respect to the frame. The advancement and retraction mechanism comprises: a motor; a cam fixed to the output shaft of the motor which is integrally rotatable by rotation of the output shaft and has a cam surface shifted from an exact circle; and a rod in contact with the cam surface and advancing and retracting by the cam. The plate advances and retracts with respect to the frame by the advancement and retraction of the rod.

A liquid ejecting head unit includes a liquid ejecting head having a nozzle forming portion in which a nozzle that ejects a liquid to a medium is formed, a shutter that has an opening portion exposing the nozzle and that is movable between a cover position in which a recessed portion including the nozzle is covered and an exposure position in which the nozzle is exposed, and a first communication portion that communicates with an inside of the recessed portion and that is capable of supplying a fluid into the recessed portion.

A blade assembly of a waste catchment system for a roller comprises a support plate for attachment to a tray of the waste catchment system and a blade holder. The blade holder is configured to receive a blade having a free edge adapted to engage with the roller to be cleaned. The blade holder includes a channel for receiving and retaining the blade, the blade being insertable into and removable from the blade holder by sliding with respect thereto. The blade holder and the blade comprise respective co-operating elements configured to permit sliding of the blade relative to the blade holder in the longitudinal direction of the blade and to constrain the blade against movement relative to the blade in a direction perpendicular to the said longitudinal axis.

A method for cleaning a printing fluid off a surface of at least one rotatable component of a printing press includes selecting and executing one of a plurality of predefined cleaning operations in an automated way. The selection is made on the basis of a predefined mathematical model executed on a computer and, when the model is executed, a parameter corresponding to an amount of the printing fluid present on the surface is calculated. The improved cleaning method may be applied in all modes of operation of the printing press and in particular allows detergent, cleaning cloth, and/or water to be saved.

A printing press makes an ink reservoir between an ink fountain and an ink fountain roller and supplies ink to the plate cylinder via a ductor roller advancing and retracting towards and from the ink fountain roller. The printing press is provided with the ink fountain, a base supporting the ink fountain, a slide mechanism sliding the ink fountain along the base in order to control the clearance between the tip of the ink fountain and the ink fountain roller, a cleaner removing the ink from the ink fountain roller, an advancement and retraction mechanism for advancing and retracting the cleaner between a contact position to the ink fountain roller and a non-contact position, and a controller. The controller controls the slide mechanism and the advancement and retraction mechanism, enlarges the clearance in order to pass the dirt with the ink through the clearance, and makes the cleaner in contact with the ink fountain roller to remove the dirt with the ink.