Method of arranging orifices on a print head and the corresponding structure
AssigneeIndustrial Technology Research Institute
InventorsCharles C. Chang, Hui-Huang Chang, Yu-Chu Huang
Life of this patent
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Abstract
A method of arranging orifices on a print head and the corresponding structure. The invention uses a design that changes relative positions of orifices on a print head so that different ink droplets for the same pixel fall in different areas of the pixel. The printing quality is enhanced because of a more homogeneous distribution of the ink droplets.
Claims10
A method of arranging orifices on a print head, which comprises the steps of:
- (A) dividing each pixel into a plurality of areas using each pixel center as a polar coordinate system origin;
- (B) installing a plurality of orifice sets on the print head, each set corresponding to one of the plurality of orientations;
- and
- (C) making the plurality of sets of orifices spray ink droplets into the corresponding areas so that the ink droplets fall in different areas of the same pixel.
A print head orifice structure characterized in that the print head contains a plurality of orifice sets installed on the printing end, the positions of the plurality of orifices being respectively distributed in the plurality of areas divided using a pixel center as a polar coordinate system origin and each of the orifice set containing a plurality of orifices corresponding to one of the pixel centers and in the same orientation.
Dependencies are inferred from the claim text.