摘要:
A conveying unit conveys a medium by moving a glue belt. The conveying unit includes a vapor application unit and a cleaning unit. The vapor application unit applies heated vapor to a front surface of the glue belt separated from the medium. The cleaning unit cleans the front surface to which the vapor is applied by the vapor application unit.
摘要:
A removable flexible jacket for use in a printing press having a transfer cylinder for transferring a freshly printed substrate comprises a sheet of woven fabric, a beaded film sheet coupled to the sheet of woven fabric, and an image disposed between the sheet of woven fabric and the beaded film sheet. The image is visible through the beaded film sheet, and wherein the image divides at least a portion of a surface of the beaded film sheet into a plurality of zones.
摘要:
An apparatus and method for cleaning an ink proofing head. The apparatus includes a continuous moving surface that engages a rotatable member of the ink proofing head, such as the anilox roller or the transfer roller, causing at least one of the members to rotate. A cleaning fluid is supplied to wet and cleanse the continuous moving surface and the inked surfaces of the ink proofing head. The fluid may be applied by immersing a portion of the continuous moving surface in a bath, or by pumping the fluid directly on to the ink proofing head. The ink-laden cleaning fluid may be conveyed to a decantation tank, enabling the ink to settle and the cleaning fluid to subsequently be re-used. A drag force may be applied to one or more of the rotating members of the ink proofing head, causing the rotating members to slip relative to the continuous moving surface and inducing a scrubbing action.
摘要:
The invention relates to a method for cleaning a washing device (5) of an offset printing machine, according to which at least one washing device of said offset machine, which comprises a spray bar (11), is removed prior to the cleaning process and placed in a cleaning bath (17). The aim of the invention is to achieve improved cleaning results in a shorter time, in particular using fewer personnel. To achieve this, ultrasonic waves are directed onto the washing device in the cleaning bath that is filled with a liquid medium and during the cleaning of the washing device using said ultrasonic waves, the liquid medium is conducted through each spray bar. The invention also relates to a cleaning device (16) for carrying out said method.
摘要:
An process and apparatus for carrying out the ultrasonic cleaning of a printing cylinder including a cleaning tank, which contains a liquid cleaning detergent into which the printing cylinder to be cleaned is immersed. Heaters are also included for heating and maintaining the temperature of the cleaning liquid at a temperature below 185.degree. F., preferably within the range of 130.degree.-160.degree. F. while the printing cylinder is cleaned. The cleaning of the printing cylinder within the cleaning tank of the apparatus is carried out by ultrasonic waves which are generated and radiated throughout the cleaning liquid for a period of time, generally, between 5-30 minutes. In a preferred embodiment of the apparatus and process, the printing cylinder is continually rotated within the cleaning tank during the period of time when the ultrasonic waves are radiating through the cleaning liquid.
摘要:
A frame has an inclined surface over which slides a carriage having a pair of screen mounting elements for supporting opposite screen ends of a stencil. A washing tube having spray nozzles and a brush is fixedly positioned such that movement of the carriage brings a stencil carried thereby to a position over the washing tube. An ink tube has one end supported by the washing tube and another end supported by the frame, such that movement of the carriage separates the stencil from the ink tube.
摘要:
An apparatus for treating a relief precursor having a back side and a relief side. The apparatus includes a housing, a treating means for treating the relief precursor with at least one liquid, a removal means for removing debris and/or liquid from the relief precursor, the removal means arranged downstream of the treating means, and a conveying mechanism configured for transporting the relief precursor in a transport direction through the housing. The removal means includes a liquid removal and guidance body mounted for removing liquid from the back side of the relief precursor. The conveying mechanism is configured for pulling the relief precursor over and against said liquid removal and guidance body whilst the relief precursor is moved in the transport direction, such that in operation liquid is removed from the back side.
摘要:
A removable flexible jacket for use in a printing press having a transfer cylinder for transferring a freshly printed substrate comprises a sheet of woven fabric, a beaded film sheet coupled to the sheet of woven fabric, and an image disposed between the sheet of woven fabric and the beaded film sheet. The image is visible through the beaded film sheet, and wherein the image divides at least a portion of a surface of the beaded film sheet into a plurality of zones.