Method to correct for malfunctioning ink ejection elements in a single pass print mode
AssigneeHewlett-Packard Development Company, L.P.
InventorsJeffrey H. Barr, Jennifer Korngiebel, Tod S. Heiles, Steven L. Webb, Jeffrey D Rutland
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Abstract
Described is a method which corrects for malfunctioning or inoperable ink ejection elements in a one-pass printmode. The method comprises obtaining the standard printmask; identifying the ink ejection elements which are malfunctioning; ascertaining ink ejection elements adjacent to the ejection elements which are malfunctioning; selecting particular adjacent ink ejection elements from the adjacent ink ejection elements; and modifying the standard printmask by adjusting the amount of ink deposited by the selected adjacent ink ejection elements to create a modified printmask.
Claims21
A method of correcting for malfunctioning ink ejection elements in a printing system using a single pass over a recording medium, comprising:
- obtaining a standard printmask;
- identifying ink ejection elements which are malfunctioning;
- ascertaining ink ejection elements adjacent to the ejection elements which are malfunctioning;
- selecting particular adjacent ink ejection elements from the adjacent ink ejection elements;
- and
- modifying the standard printmask by adjusting the amount of ink deposited by the selected adjacent ink ejection elements to create a modified printmask.
A method of correcting for malfunctioning ink ejection elements in a printing system using a single pass over a recording medium, comprising:
- operating a printing system in single pass mode;
- obtaining a standard printmask;
- identifying ink ejection elements which are malfunctioning, wherein said identifying comprises using a drop ejection detector;
- ascertaining ink ejection elements adjacent to the ejection elements which are malfunctioning;
- selecting particular adjacent ink ejection elements from the adjacent ink ejection elements;
- and
- modifying the standard printmask by adjusting the amount of ink deposited by the selected adjacent ink ejection elements to create a modified printmask.
Dependencies are inferred from the claim text.