Abstract: In one example, a media support includes a sheet of elongated suction cups. In another example, a media support includes an arrangement of elongated and/or circular suction cups in which the density of the suction cups varies between different parts of the support.

Abstract: Examples described herein include a print media edge repair system that includes a first repair element disposed adjacent to a media handling path to repair a leading edge of a sheet of print media as the sheet of print media moves into a position relative to a printing system associated with the print media edge repair system. The print media repair system may also include a second repair element disposed opposite the first repair element across the media handling path to repair a trailing edge of the sheet of print media as the sheet of print media moves into the position relative to a printing system.

Abstract: Examples described herein include method for calibrating LED modules in a curing engine. The method of calibrating UV curing modules includes receiving an uncured calibration image and initiating a curing operation that includes operating the curing modules according to a plurality of corresponding initial power level settings to apply radiant energy to the uncured calibration image to generate a cured calibration image. The method further includes receiving user input or information about an image characteristic of the cured calibration image from a user. The method then includes analyzing the user input to generate adjustments to the corresponding initial power level settings, and then applying the adjustments to the corresponding initial power level settings to generate a plurality of corresponding adjusted power level settings.

Abstract: A method comprises applying to a substrate a layer of substantially clear solvent-based printer fluid. The printer fluid comprises an ultraviolet light absorbing substance. The method comprises irradiating the applied layer of printer fluid with an ultraviolet light to heat the solvent and cause evaporation of the solvent. The waveband of the radiation is such that heating of the solvent is substantially due to heat transfer from the ultraviolet light absorbing substance in the printing fluid.

Abstract: According to one example of the present invention there is provided a method of printing, with a printer, an image on a substrate, the printer comprising a substrate support. The method comprises obtaining an image to be printed, determining an offset position of a substrate positioned on the substrate support relative to a predetermined reference printing position, and controlling the printer to print the image to be printed at the determined offset position.

Abstract: A method of printing a print media comprises printing an image onto a surface of a print media, and applying a protective coating over the surface of the print media using an analog printing process, wherein the protective coating comprises a plurality of micro openings.

Abstract: In one example, a pallet conveyor for a printing system is described, having a track, a pallet to support a print substrate and move on the track, and a vacuum mechanism to selectively apply a vacuum at the pallet. A boundary of the vacuum applied at the pallet is synchronized with an edge of the print substrate.

Abstract: In some examples, a heating apparatus includes a light emitting diode (LED) array comprising an LED to heat a target object, and a heat sink thermally coupled to the LED array, to dissipate heat from the LED array, the heat sink comprising a plurality of refrigerant paths to pass a refrigerant through the heat sink in a plurality of different directions.

Abstract: A method of depositing printing fluid on a sheet of corrugated media comprises determining a deformation of a sheet of corrugated media, adjusting control parameters for a plurality of nozzles based on the determined deformation, and depositing printing fluid from the plurality of nozzles onto the sheet of corrugated media according to the adjusted control parameters.

Abstract: Examples described herein include examples methods for generating varnish knockouts that include applying a fixer material to a surface of a print medium, selectively applying a print material over the fixer material to form an image, and applying an overcoat material to form a durable coating on areas over the image and a nondurable coating over other areas of the surface.

Abstract: According to one example, there is provided a method of processing an image. The method comprises obtaining image data representing an image to be printed, determining, from the image data, pixel locations on a substrate where ink is intended to be deposited and pixel locations where no ink is intended to be deposited, and modifying the image data to define varnish to be deposited at at least some of those substrate pixel locations determined as where no ink is intended to be deposited.

Abstract: A printer dryer device comprises a first drying unit, wherein the first drying unit comprises a first plurality of energy-emitting elements to dry a printing substance on a printing medium, wherein the first plurality of energy-emitting elements are electrically connected in series in the first drying unit. The printer dryer device further comprises a second drying unit, wherein the second drying unit comprises a second plurality of energy-emitting elements to dry the printing substance on the printing medium, wherein the second drying unit is arranged downstream from the first drying unit in a medium transport direction of the printing medium, and wherein the second plurality of energy-emitting elements are electrically connected in series in the second drying unit. At least one energy-emitting element among the second plurality of energy-emitting elements is not electrically connected in series to an energy-emitting element among the first plurality of energy-emitting elements.

Abstract: A method of generating data representing a halftone screen includes generating tonal data of a first colorant for a plurality of pixels according to a darkness level by assigning a tonal value to at least a first subset of the plurality of pixels, wherein the tonal value takes a value equal to any of a plurality of ordered tonal values. A difference between a maximal tonal value and a minimal tonal value assigned to pixels of the first subset is equal to or smaller than a predefined threshold. For a given darkness level, a number of pixels with the minimal tonal value is maximized. The darkness level is related to a ratio of a sum of tonal values of all pixels of the plurality of pixels to a number of pixels of the plurality of pixels.

Abstract: In some examples, a printing system comprises a controller to determine, during a print operation, first status information that relates to a condition of a first nozzle set of the print head, and second status information that relates to a condition of a second nozzle set of the print head. In response to determining from the first status information that a number of malfunctioning nozzles in the first nozzle set does not exceed a first threshold value and determining from the second status information that a number of redundant nozzles in the second nozzle set exceeds a second threshold value, the controller is to cause the second nozzle set including the redundant nozzles of the print head to be operated in place of the first nozzle set to continue the print operation.

Abstract: In certain examples described herein, a depositing mechanism performs an overcoat depositing operation. The depositing mechanism comprises a plurality of print head arrays. Each print head array is arrangeable in a deposit position to deposit an overcoat layer onto a substrate and a service position to enable servicing to be performed. In certain cases, an array controller causes at least one print head array of the plurality of print head arrays to be moved periodically from the deposit position to the service position according to a predefined servicing sequence during an ongoing overcoat depositing operation performed by the depositing mechanism.

Abstract: A method of printing a print media comprises printing an image onto a surface of a print media, and applying a protective coating over the surface of the print media using an analog printing process, wherein the protective coating comprises a plurality of micro openings.

Abstract: According to one example, a method may include determining a desired pattern of fluid to be applied to a substrate, controlling a first array of fluid applicators to apply fluid to the substrate to form a first portion of the pattern, in which an applicator of the first array of fluid applicators spans a section of the substrate that includes portions of the substrate both in and out of the pattern. The method may also include controlling the first array of fluid applicators to cause the applicator to not apply fluid to the section of the substrate and controlling a second fluid applicator to apply fluid to the section of the substrate, the second fluid applicator being separately movable from the first array of fluid applicators.

Abstract: A printer dryer device includes a first drying unit, wherein the first drying unit includes a first plurality of energy-emitting elements to dry a printing substance on a printing medium, wherein the first plurality of energy-emitting elements are electrically connected in series in the first drying unit. The printer dryer device further includes a second drying unit, wherein the second drying unit includes a second plurality of energy-emitting elements to dry the printing substance on the printing medium, wherein the second drying unit is arranged downstream from the first drying unit in a medium transport direction of the printing medium, and wherein the second plurality of energy-emitting elements are electrically connected in series in the second drying unit. At least one energy-emitting element among the second plurality of energy-emitting elements is not electrically connected in series to an energy-emitting element among the first plurality of energy-emitting elements.

Abstract: In an example, a print head includes a nozzle, a fluid channel to provide printing fluid to the nozzle and a Light Emitting Diode (LED). The LED may emit light to heat printing fluid in the fluid channel causing localised vaporisation of the printing fluid and ejection of a fluid drop through the nozzle.

Abstract: In one example, a media support includes a platen and multiple suctions cups embedded in or an integral part of the platen. Some of the suction cups are arranged in a first part having a first density and some of the suction cups arrange in a second part having a second density less than the first density.