Abstract: A method of printing on a printable medium is disclosed. The method of printing may use a print head having a plurality of nozzles. The printable medium may have a leading edge and a defined zone adjacent to the leading edge. The print head may deposit print agent onto the printable medium via the plurality of nozzles during successive printing passes. The method may comprise printing outside, and not within, the defined zone on the printable medium using a first subset of nozzles of the plurality of nozzles. The method may further comprise printing within, and not outside, the defined zone on the printable medium using a second subset of nozzles of the plurality of nozzles.

Abstract: A printing apparatus comprises a printhead and a controller. The printhead includes dies, each die comprising rows of nozzles, wherein, in an overlapping region, the rows of nozzles of two dies overlap in a first direction, in which a relative movement between the printhead and a print medium takes place during operation of the printing apparatus. The controller is to apply a first weaving mask to a first row of nozzles of a first die and a second weaving mask to a second row of nozzles of the first die, the second weaving mask being different from the first weaving mask, the weaving masks defining, independent of print data, which of the nozzles of the corresponding row are to be used for printing in the overlapping region.

Abstract: A circuit 108 for controlling a plurality of fluid dispense nozzles 202(N), the circuit 108 to change an order in which the fluid dispense nozzles 202(N) are actuated.

Abstract: A method of printing on a printable medium is disclosed. The method of printing may use a print head having a plurality of nozzles. The printable medium may have a leading edge and a defined zone adjacent to the leading edge. The print head may deposit print agent onto the printable medium via the plurality of nozzles during successive printing passes. The method may comprise printing outside, and not within, the defined zone on the printable medium using a first subset of nozzles of the plurality of nozzles. The method may further comprise printing within, and not outside, the defined zone on the printable medium using a second subset of nozzles of the plurality of nozzles.

Abstract: A printing apparatus comprises a printhead and a controller. The printhead includes dies, each die comprising rows of nozzles, wherein, in an overlapping region, the rows of nozzles of two dies overlap in a first direction, in which a relative movement between the printhead and a print medium takes place during operation of the printing apparatus. The controller is to apply a first weaving mask to a first row of nozzles of a first die and a second weaving mask to a second row of nozzles of the first die, the second weaving mask being different from the first weaving mask, the weaving masks defining, independent of print data, which of the nozzles of the corresponding row are to be used for printing in the overlapping region.

Abstract: A printer for printing on a print medium as said print medium advances through a print zone, the printer including a number of print heads extending over the print zone, each print head including at least one nozzle array wherein at least two adjacent nozzle arrays overlap forming at least one stitching zone in the overlap region; and a printer controller for generating a sequence of nozzle firing commands for each nozzle array to selectively deposit droplets of print fluid on said print medium from said nozzle arrays in accordance with an image to be printed, wherein the printer controller further applies masks having decorrelated patterns to said sequence of firing commands for at least those overlapping nozzles of the nozzle arrays coinciding with the at least one stitching zone to obtain a predetermined optical parameter of the printed image in the stitching zone, irrespective of an offset between two adjacent nozzle arrays.

Abstract: The present invention relates to a method for automatically segmenting a color image composed of pixels having been captured for example using a digital microscope. The method provides for a color to be selected representing a region to be segmented of the color image. The colors assigned to the pixels and the color selected are in accordance with a first color model. A clearance for each of the pixels is determined representing a distance between the selected color and the color of the corresponding pixel. The colors assigned to the pixels and the color selected are in accordance with a perception-oriented second color model. One of the pixels is assigned to the segmented region when the clearance assigned to the corresponding pixel is below a settable threshold value and when the hue assigned to the corresponding pixel is within a settable interval around the hue assigned to the selected color.

Abstract: A printer for printing on a print medium as said print medium advances through a print zone, the printer including a number of print heads extending over the print zone, each print head including at least one nozzle array wherein at least two adjacent nozzle arrays overlap forming at least one stitching zone in the overlap region; and a printer controller for generating a sequence of nozzle firing commands for each nozzle array to selectively deposit droplets of print fluid on said print medium from said nozzle arrays in accordance with an image to be printed, wherein the printer controller further applies masks having decorrelated patterns to said sequence of firing commands for at least those overlapping nozzles of the nozzle arrays coinciding with the at least one stitching zone to obtain a predetermined optical parameter of the printed image in the stitching zone, irrespective of an offset between two adjacent nozzle arrays.

Abstract: The present invention relates to a method for automatically segmenting a color image composed of pixels having been captured for example using a digital microscope. The method provides for a color to be selected representing a region to be segmented of the color image. The colors assigned to the pixels and the color selected are in accordance with a first color model. A clearance for each of the pixels is determined representing a distance between the selected color and the color of the corresponding pixel. The colors assigned to the pixels and the color selected are in accordance with a perception-oriented second color model. One of the pixels is assigned to the segmented region when the clearance assigned to the corresponding pixel is below a settable threshold value and when the hue assigned to the corresponding pixel is within a settable interval around the hue assigned to the selected color.

Abstract: Print masks for multiple pass print modes are described herein. In at least some examples herein, the print mask includes mask matrices. The mask matrices define a single nozzle actuation pattern. The nozzle actuation pattern is irregular. In at least some examples herein, techniques for printing of an image on a substrate are described. During printing the image on the substrate a print mask is applied such that, for each pass, the inkjet nozzles in the print head are actuated according to the single nozzle actuation pattern.

Abstract: A printhead for a printer in which a print medium advances in a media advance direction, said printhead being static when printing and having an adjustable length in a width direction that is perpendicular to said media advance direction, such that the length of the printhead in said width direction can be adjusted to the width of the image to be printed.

Abstract: A printhead for a printer in which a print medium advances in a media advance direction, said printhead being static when printing and having an adjustable length in a width direction that is perpendicular to said media advance direction, such that the length of the printhead in said width direction can be adjusted to the width of the image to be printed.