Method of printing and printer
AssigneeHewlett-Packard Development Company, L.P.
InventorsAntonio Gracia Verdugo, Marina Cantero Lazaro, Mauricio Seras
Life of this patent
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Abstract
A method of printing a pattern from at least two rows of fluid ejection nozzles, said nozzles ejecting a first fluid in a multi-pass printing mode, the method comprising: dividing the pattern to be printed between the rows of fluid ejection nozzles; applying masks to the rows of fluid ejection nozzles for printing with selected nozzles of each of the rows of fluid ejection nozzles during each pass; wherein a first mask for printing from a first row of fluid ejection nozzles during an n-th pass is different from a second mask for printing from a second row of fluid ejection nozzles during said n-th pass.
Claims14
A method of printing a pattern from at least two rows of fluid ejection nozzles, said nozzles ejecting a first fluid in a multi-pass printing mode, the method comprising:
- dividing the pattern to be printed between the rows of fluid ejection nozzles;
- applying masks to the rows of fluid ejection nozzles for printing with selected nozzles of each of the rows of fluid ejection nozzles during each pass;
- and
- printing, over multiple passes, with the selected nozzles of each of the rows of fluid ejection nozzles to which the masks have been applied,
- wherein a first mask for printing from a first row of fluid ejection nozzles during an n-th pass is different from a second mask for printing from a second row of fluid ejection nozzles during said n-th pass,
- and wherein, in N passes, a sequence of N masks including the first and second masks is applied to the first row and an inverse sequence of the N masks is applied to the second row.
A printer comprising:
- a number of print heads having a number of nozzle trenches, the nozzles of at least two nozzle trenches to eject a first type of printing fluid;
- and
- a printer controller including a control program to control ejection of printing fluid from the print heads, and applying masks to the at least two nozzle trenches to print with selected nozzles of each nozzle trench during different passes of a multi-pass printing mode,
- wherein a first mask to print from a first nozzle trench during an n-th pass is different from a second mask to print from a second nozzle trench during said n-th pass,
- and wherein, in N passes, a sequence of N masks including the first and second masks is applied to the first row and an inverse sequence of the N masks is applied to the second row.
A method of printing a pattern in a large format printer, the printer including a first print head including two rows of fluid ejection nozzles ejecting an optimizer fluid, and a set of second print heads, each second print head including two rows of fluid ejection nozzles ejecting color ink, the two rows including a first row and a second row, the method comprising:
- in a multi-pass printing mode,
- depositing the optimizer fluid during a number of passes, wherein a different mask is applied to each of the two rows of fluid ejection nozzles of the first print head during a respective pass;
- and
- depositing color ink during a number of passes from the set of second print heads, after the optimizer fluid has been deposited,
- wherein, during each pass, the total amount of fluid ejected from the at least two rows of the fluid ejection nozzles is the same,
- and wherein, in N passes, a sequence of N masks is applied to the first row and an inverse sequence of the N masks is applied to the second row.
Dependencies are inferred from the claim text.