Ink jet color printing method and printer
AssigneeOce-Technologies B.V.
InventorClemens Theodorus Weijkamp
Life of this patent
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Abstract
A method of color printing with an ink jet printer having a printhead which is reciprocatingly moved in forward and return scan passes in a main scanning direction, in which an even number of nozzle arrays is provided for each of at least two colors, and said nozzle arrays are symmetrically arranged in the main scanning direction, wherein, for printing a single pixel composed of at least two colors with high density, ink dots of each of these colors are formed in even numbers by activating the corresponding nozzles of the symmetrically arranged arrays at appropriate timings in the same scan pass of the printhead.
Claims7
A method of color printing with an ink jet printer having a printhead which reciprocatingly moves in forward and return scan passes in a main scanning direction, in which an even number of nozzle arrays is provided for each of at least two colors, and said nozzles arrays are symmetrically arranged in the main scanning direction, wherein, for printing a single pixel composed of at least two colors with high density, ink dots of each of these colors are formed by printing an even number of ink droplets of each of these colors on the said single pixel by activating the corresponding nozzles of the symmetrically arranged arrays at appropriate timings in the same scan pass of the printhead.
An ink jet color printer comprising:
- a printhead which is reciprocatingly moved in forward and return scan passes in a main scanning direction, in which an even number of nozzle arrays is provided for each of at least two colors, said nozzle arrays being symmetrically arranged in the main scanning direction, and
- a control unit for energizing nozzles of the nozzle arrays in accordance with the image information to be printed, wherein
- the control unit is arranged for activating the nozzles of the symmetrically arranged arrays at appropriate times such that, for printing a single pixel composed of at least two colors with high density, ink dots of each of these colors are formed in the same scan pass of the printhead by printing an even number of ink droplets of each of these colors on the said single pixel.
Dependencies are inferred from the claim text.