Method and system for detecting print head roll
AssigneeXerox Corporation
InventorsHoward A. Mizes, Steven Van Cleve Korol, Kenneth Ralph Chamberlain
Life of this patent
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Abstract
A method of detecting print head roll begins with the formation of a test pattern on an image receiving surface. The test pattern includes a plurality of marks arrayed across the image receiving surface in a cross-process direction with each mark in the plurality being formed by a different nozzle of a print head. The cross-process direction positions of each mark in the plurality of marks are then detected; and the detected cross-process direction positions are correlated to a print head roll value for the print head.
Claims19
A method of detecting print head roll in an ink jet printing system including one or more print heads, the method comprising:
- forming a test pattern on an image receiving surface, the test pattern comprising a plurality of marks arrayed across the image receiving surface in a cross-process direction, each mark in the plurality being formed by a different nozzle of one print head;
- detecting the cross-process direction positions of each mark in the plurality of marks;
- and
- correlating the detected cross-process direction positions to a print head roll value for the print head.
A method of detecting print head roll in an ink jet printing system including one or more print heads, the method comprising:
- forming a test pattern on an image receiving surface, the test pattern comprising a plurality of marks arrayed across the image receiving surface in a cross-process direction, each mark in the plurality being formed by a different nozzle of one print head;
- scanning the test pattern to determine a cross-process direction spacing between each mark in the plurality of marks;
- and
- correlating the detected cross-process direction spacings to a print head roll value for the print head.
A system for detecting print head roll in an ink jet printing system including one or more print heads, the system comprising:
- a print head configured to form the test pattern on an image receiving surface, the test pattern comprising a plurality of marks arrayed across an image receiving surface in a cross-process direction, each mark in the plurality being formed by a different nozzle of one print head;
- an image sensor configured to generate signals indicative of a cross-process direction position of each mark in the test pattern;
- and
- a controller configured to receive the signals from the image sensor and to correlate the cross-process direction positions of the marks to a print head roll value for the print head.
Dependencies are inferred from the claim text.