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US 2003/0202042 A1Published application
Banding reduction in incremental printing
AssigneeHewlett-Packard Development Company, L.P.
InventorPaul R. Krouss
Life of this patent
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AssigneeHewlett-Packard Development Company, L.P.
InventorPaul R. Krouss
Estimating the term…
A method of printing with a printer of the type comprising a substantially linear arrangement of parallel pens mounted on a scan axis, each pen comprising an array of ink ejection elements, comprises printing a plurality of swaths, each from a different pen, on a printing medium between successive incremental advances of said medium in a printing advance direction (PAD) relative to the pens wherein said swaths are printed such that the boundaries of at least two of the swaths are offset from one another in the PAD. In a preferred method of the invention, the nozzles of the various pens are divided into active and inactive sets of nozzles, such that only the active nozzles are used to print the swaths and so that the different active nozzle sets each have offset endpoints in the PAD to print offset swath boundaries.
A method of printing with a printer of the type which is adapted to receive a plurality of pens arranged to traverse a scan axis, each pen comprising an array of ink ejection elements, wherein the method comprises:
A computer program product comprising printer control software for controlling a printer of the type which is adapted to receive a plurality of pens arranged to traverse a scan axis, each pen comprising an array of ink ejection elements, wherein the program comprises instructions effective to cause the printer to:
A printer comprising:
A printer comprising first and second pens arranged to traverse a print medium along a scan axis, the pens respectively comprising first and second arrays of printing elements each having a length extending along a second axis substantially perpendicular to the scan axis, at least one end of the first array being substantially aligned with the corresponding end of the second array in the second axis, the printer being arranged to simultaneously print first and second swaths of image content aligned with the scan axis with the first and second pens respectively, the first swath being of reduced width relative to the first pen length such that at least one boundary of the first swath is substantially offset along the second axis from the corresponding boundary of the second swath.
Dependencies are inferred from the claim text.