Vector compensation for inoperative ink-jets in composite colors
AssigneeXerox Corporation
InventorStephen Michael Kroon
Life of this patent
Estimating the term…
Abstract
The system and methods described maintain composite color print integrity of an inoperative ink-jet. The methods may include a computing device and a printer to obtain the print job and reconstruct a pixel bitmap. The methods may also include a sensor configured to generate output signals associated with the individual ink-jets located in the print-head to indicate inoperative ink-jets and help compensate for those ink-jets.
Claims17
A system for maintaining colorimetry and hue in printed composite colors comprising:
- a printer configured to obtain a bitmap indicating a first color-plane and a first contone compensation for a first pixel;
- a sensor configured to generate output signals indicating a first inoperative color-plane;
- and
- a controller configured to control a second adjacent color-plane and contone to compensate the first inoperative color-plane and configured to compensate for at least one operative color-plane at the first pixel;
- wherein the controller controls the second adjacent color-plane to compensate the first inoperative color-plane by treating all operative and inoperative color-planes in the adjacent raster column as inoperative.
A method for maintaining colorimetry and hue in printed composite colors comprising:
- obtaining a bitmap indicating a first color-plane and a first contone compensation for a first pixel;
- generating output signals indicating a first inoperative color-plane;
- and
- controlling a second adjacent color-plane and contone to compensate the first inoperative color-plane and configured to compensate for at least one operative color-plane at the first pixel;
- wherein controlling the second adjacent color-plane compensates the first inoperative color-plane by treating all operative and inoperative color-planes in the adjacent raster column as inoperative.
A method for maintaining colorimetry and hue of printed composite colors in a halftone printing process, the method comprising:
- obtaining a bitmap indicating a first color-plane and a first pre-halftone compensation for a first pixel;
- generating output signals indicating a first inoperative color-plane;
- and
- controlling a second adjacent color-plane and post-halftone to compensate the first inoperative color-plane and configured to compensate for at least one operative color-plane at the first pixel;
- wherein controlling the second adjacent color-plane compensates the first inoperative color-plane by treating all operative and inoperative color-planes in the adjacent raster column as inoperative.
Dependencies are inferred from the claim text.