Abstract: Methods and apparatus to control a heater associated with a printing nozzle are disclosed. A method comprising controlling a heater associated with a printing nozzle to reduce a heat output of the heater based on a determination that the printing nozzle is outside a print area and printing an image on a substrate using other printing nozzles while the heat output of the heater is reduced.

Abstract: Methods and apparatus to selectively control ink evaporation in printhead nozzles are disclosed. An example printhead for use with a printer includes a plurality of nozzles (142) and a plurality of valves (144) positioned adjacent respective ones of the nozzles (142) to selectively control fluid flow through the respective nozzle (142).

Abstract: A print pre-treatment module is provided for printing an ink on a PVC print medium from a printer. The PVC print medium may have exudates on the surface. The pre-treatment module includes an impermeable material in rubbing contact with the PVC print medium, which is supported on a media roller conveying the print medium. Also disclosed herein are a printer incorporating the module and a method for reducing print defects on the PVC print medium.

Abstract: The present disclosure relates particularly but not exclusive to a method for printing in a multipass print mode using a first printhead (PT1) and a second printhead (PT2), the method including printing in a first pass a first image in a first area of a print medium using a first set (ST21) of nozzles (N5-N24) from the first printhead (PT1), printing in a second pass a coating layer over the first image using a second set (ST22) of nozzles (P4-P22) from the second printhead (PT2), and printing in a third pass a second image over the coating layer using a third set (ST23) of nozzles (N1-20) from the first printhead (PT1).

Abstract: Methods and apparatus to selectively control ink evaporation in printhead nozzles are disclosed. An example printhead for use with a printer includes a plurality of nozzles (142) and a plurality of valves (144) positioned adjacent respective ones of the nozzles (142) to selectively control fluid flow through the respective nozzle (142).

Abstract: Methods and apparatus to control a heater associated with a printing nozzle are disclosed. A method comprising controlling a heater associated with a printing nozzle to reduce a heat output of the heater based on a determination that the printing nozzle is outside a print area and printing an image on a substrate using other printing nozzles while the heat output of the heater is reduced.

Abstract: A printing system may comprise a page wide array printhead a capping station, and a number of modular caps comprising a housing to cover a nozzle array of a printhead and a cap coupler coupled to the housing to couple the cap to the nozzle array in which the modular caps are adapted to be coupled to and removed from the nozzle array of the printhead and stored in the capping station.

Abstract: A method of preparing a printer cartridge for transport may comprise applying a volume of immiscible fluid to a nozzle bore of a printhead. A printer cartridge may comprise a volume of immiscible fluid deposited into a nozzle bore of a nozzle of the printhead and a layer of immiscible fluid applied over the nozzle bore opening. A printhead die may comprise a volume of immiscible fluid deposited into a nozzle bore of the die and a layer of immiscible fluid applied over the nozzle bore opening.

Abstract: An immiscible fluid distribution system applies immiscible fluid to the nozzles of a printhead to at least partly cap unused nozzles during printing. A printer subassembly may comprise an immiscible fluid distribution system to apply an immiscible fluid to the surface of a printhead nozzle plate. A method of capping a printhead may comprise applying a layer of immiscible fluid to nozzles of a printhead and selectively ejecting a fluid from a first subset of nozzles while not ejecting fluid from a second subset of nozzles that are at least partially capped with the immiscible fluid.

Abstract: Hard imaging methods and devices are described. In at least some examples, a method includes ejecting a plurality of droplets of a liquid marking agent corresponding to the image to be formed, wherein the droplets of the liquid marking agent individually comprise a plurality of ink particles. The droplets are received upon a transfer member, and after the receiving, at least the ink particles are transferred from the transfer member to media to form a hard version of the image using the media.

Abstract: Hard imaging methods and devices are described. In at least some examples, a method includes ejecting a plurality of droplets of a liquid marking agent corresponding to the image to be formed, wherein the droplets of the liquid marking agent individually comprise a plurality of ink particles. The droplets are received upon a transfer member, and after the receiving, at least the ink particles are transferred from the transfer member to media to form a hard version of the image using the media.