Abstract: A digital printing process for printing an image (I) including a white area (W) and/or a coloured area (C) on a packaging material includes selecting a packaging material with a substantially white side, and preparing print data to be sent to a printing means taking into account that the side of the packaging material is substantially white. The print data represents one or more first image areas (A1) representing the image (I), and one or more second image areas (A2) representing a packaging look (L), to be printed on the substantially white side of the packaging material, outside the one or more first image areas (A1) where the image (I) is to be located. The method further includes printing by the printing means on the substantially white side of the packaging material using the print data.

Abstract: A contact-less liquid application apparatus, and in particular a printing apparatus, for applying a liquid in a contact-less manner on a moving medium. The liquid application apparatus includes a liquid application means configured for applying a liquid on a moving medium, a media transport system configured for moving the medium in a movement direction at a distance of the liquid application means, and a flow control means configured to evacuate at least a portion of the air displaced by the moving of the medium, at least before the medium is in a liquid application position, where the liquid application position is a position in which the liquid application means is applying liquid on the medium.

Abstract: A method for printing with an inkjet head includes: printing with an inkjet head comprising a plurality n of parallel nozzle rows, where n is at least 2; where each nozzle row comprises a plurality of nozzles, where adjacent nozzle rows of the plurality of nozzle rows are shifted with respect to each other; where a distance between two nozzle rows, seen in the printing direction, is d; and where said printing includes: moving the substrate with respect to the inkjet head in the printing direction at a printing speed v?; and firing each nozzle of the plurality of nozzles with a firing frequency f?; where the plurality of nozzle rows are fired at different instants in time, such that the distance d? between printed rows of dots printed by the two nozzle rows, seen in the printing direction, is larger or smaller than d.

Abstract: A method for printing with an inkjet head includes: printing with an inkjet head comprising a plurality n of parallel nozzle rows, where n is at least 2; where each nozzle row comprises a plurality of nozzles, where adjacent nozzle rows of the plurality of nozzle rows are shifted with respect to each other; where a distance between two nozzle rows, seen in the printing direction, is d; and where said printing includes: moving the substrate with respect to the inkjet head in the printing direction at a printing speed v?; and firing each nozzle of the plurality of nozzles with a firing frequency f?; where the plurality of nozzle rows are fired at different instants in time, such that the distance d? between printed rows of dots printed by the two nozzle rows, seen in the printing direction, is larger or smaller than d.

Abstract: A system for use in image reproduction, the system includes at least a first light emitting unit and a second light emitting unit. The first light emitting unit includes a first cooling means arranged for cooling the first light emitting unit. The second light emitting unit includes a second cooling means arranged for cooling the second light emitting unit independently of the first light emitting unit. The first light emitting unit has a first elongate emitting area. The second light emitting unit has a second elongate emitting area. A control unit controls the cooling of at least one of the first cooling means and the second cooling means such that at least one of the first elongate emitting area and the second elongate emitting area, respectively, has a desired length.

Abstract: A system for use in image reproduction, the system includes at least a first light emitting unit and a second light emitting unit. The first light emitting unit includes a first cooling means arranged for cooling the first light emitting unit. The second light emitting unit includes a second cooling means arranged for cooling the second light emitting unit independently of the first light emitting unit. The first light emitting unit has a first elongate emitting area. The second light emitting unit has a second elongate emitting area. A control unit controls the cooling of at least one of the first cooling means and the second cooling means such that at least one of the first elongate emitting area and the second elongate emitting area, respectively, has a desired length.

Abstract: Digital printing method for printing an image, using a printing system capable of printing a plurality of density levels, including: printing at least one left control strip in a left zone of a print medium and at least one right control strip in a right zone of said print medium, said left control strip including at least one left patch and said right control strip including at least one right patch, wherein settings are used which are intended for printing the same color and/or density level for a left patch of said at least one left patch and for a corresponding right patch of said at least one right patch; measuring a density level and/or color of at least said printed left patch and right patch; adjusting said printing system based on a difference between the measured density levels and/or colors of said left patch and said right patch in order to perform a left-right correction in said image to be printed; and printing the image using said adjusted printing system.

Abstract: Image processing system for generating control signals for printing means, from source image data from an image source, comprising a raster image processing and layout module configured to convert said source image data into a first lane bitmap element and a second lane bitmap element; a streaming processor arranged to receive said first lane bitmap element and said second lane bitmap element, and position signals comprising position data for said first and/or said second lane image in the printed image; said streaming processor being configured to generate control signals for the printing means based on said first lane bitmap element, said second lane bitmap element, and said position signals in order to be able to adjust the position of said first lane image and/or the position of the second lane image in the printed image.

Abstract: A digital printing apparatus comprising a developing roller (102) and an image carrying roller (101); the developing roller (102) being arranged to transfer liquid toner (107) onto the image carrying roller (101) in accordance with a charge pattern; an upstream charger (111) upstream of an area (108) of rotational contact between the developing roller (102) and the image carrying roller (101); a downstream discharger (112, 122, 132) downstream of the area (108); a sensor (200) downstream of the area (108) to detect a property representative of the charge of a liquid toner residue; and a controller (210) to receive sensor data from the sensor (200) and to provide a control signal to control the downstream discharger.

Abstract: A system for applying liquid toner to a developing member in a digital printer. The system includes a reservoir for storing liquid toner, a feed member and a developing member. The feed member is arranged to rotate to transfer liquid toner from the reservoir to the developing member. The system includes a feed assist member. The feed member is arranged for rotating in contact with the feed assist member and making contact with the feed assist member along a contact area which is located, when the system is operational, in the liquid toner in the reservoir. The feed assist member is provided with a compressible contact portion arranged for being compressed in the contact area between the feed member and the feed assist member.

Abstract: Digital printing method for printing an image, using a printing system capable of printing a plurality of density levels, including: printing at least one left control strip in a left zone of a print medium and at least one right control strip in a right zone of said print medium, said left control strip including at least one left patch and said right control strip including at least one right patch, wherein settings are used which are intended for printing the same color and/or density level for a left patch of said at least one left patch and for a corresponding right patch of said at least one right patch; measuring a density level and/or color of at least said printed left patch and right patch; adjusting said printing system based on a difference between the measured density levels and/or colors of said left patch and said right patch in order to perform a left-right correction in said image to be printed; and printing the image using said adjusted printing system.

Abstract: A system for applying liquid toner to a developing member in a digital printer. The system includes a reservoir for storing liquid toner, a feed member and a developing member. The feed member is arranged to rotate to transfer liquid toner from the reservoir to the developing member. The system includes a feed assist member. The feed member is arranged for rotating in contact with the feed assist member and making contact with the feed assist member along a contact area which is located, when the system is operational, in the liquid toner in the reservoir. The feed assist member is provided with a compressible contact portion arranged for being compressed in the contact area between the feed member and the feed assist member.

Abstract: Image processing system for generating control signals for printing means, from source image data from an image source, comprising a raster image processing and layout module configured to convert said source image data into a first lane bitmap element and a second lane bitmap element; a streaming processor arranged to receive said first lane bitmap element and said second lane bitmap element, and position signals comprising position data for said first and/or said second lane image in the printed image; said streaming processor being configured to generate control signals for the printing means based on said first lane bitmap element, said second lane bitmap element, and said position signals in order to be able to adjust the position of said first lane image and/or the position of the second lane image in the printed image.

Abstract: A digital printing apparatus comprising a developing roller (102) and an image carrying roller (101); the developing roller (102) being arranged to transfer liquid toner (107) onto the image carrying roller (101) in accordance with a charge pattern; an upstream charger (111) upstream of an area (108) of rotational contact between the developing roller (102) and the image carrying roller (101); a downstream discharger (112, 122, 132) downstream of the area (108); a sensor (200) downstream of the area (108) to detect a property representative of the charge of a liquid toner residue; and a controller (210) to receive sensor data from the sensor (200) and to provide a control signal to control the downstream discharger.

Abstract: Disclosed is an image application unit for use with liquid toner, suitable for transferring an image to a drum rotating around a vertical axis or a printing substrate guided by such a drum. The image application unit includes: a liquid toner dosing assembly; an imaging member sustaining a pattern of electric charge forming a latent image on its surface, and arranged to transfer it after development to said drum or said substrate; and a development member arranged to receive liquid toner from the dosing assembly, and to develop the latent image by transferring a portion of the liquid toner onto the imaging member in accordance with the pattern. The liquid toner dosing assembly is adapted for vertical use and the development member and the imaging member are configured for rotation around vertical axes.

Abstract: A digital printing apparatus using liquid toner comprising chargeable imaging particles and carrier liquid, comprising an imaging member (140) to sustain a pattern of electric charge forming a latent image on its surface, a development member (130) to receive toner (100) from a reservoir (110), and to develop the image by transferring toner onto the imaging member (140) in accordance with the pattern, leaving a remaining fraction of the toner on the development member (130), an electrical field generating means to compact the particles by applying a field before transfer onto the imaging member (140), means (150, 160) for depositing the toner onto a substrate (199), and means (133) for removing remaining toner from the development member (130), comprising an integrated source for generating an oscillating electric field, arranged to decompactify the chargeable imaging particles and mechanical removal means for removing the liquid toner.