Systems and methods for print head defect detection and print head maintenance
AssigneeXerox Corporation
InventorsJeffrey Folkins, Donald Drake
Life of this patent
Estimating the term…
Abstract
A method for detecting a defect in an inkjet print head within an inkjet marking device includes marking images on a rotating intermediate substrate according to an image sequence, marking a test image on at least one blank portion of the intermediate substrate, the blank portion resulting from the image sequence, evaluating the test image with a sensor, and determining whether the inkjet print head is defective based on the evaluation.
Claims29
A method for detecting a defect in an inkjet print head, comprising:
- marking images on a rotating intermediate substrate according to an alternate image sequence;
- marking a test image on at least one blank portion of the intermediate substrate, the blank portion resulting from the alternate image sequence;
- evaluating the test image with a sensor;
- and
- determining whether the inkjet print head is defective based on the evaluation.
A method for detecting a defect in an inkjet print head, comprising:
- marking images on a rotating intermediate substrate according to a consecutive image sequence;
- marking, a test image on at least one blank portion of the intermediate substrate, the blank portion resulting from the consecutive image sequence;
- evaluating the test image with a sensor;
- and
- determining whether the inkjet print head is defective based on the evaluation.
A system for detecting a defect in an inkjet print head, comprising:
- at least one controller that:
- causes at least one inkjet to mark images on a rotating intermediate substrate according to an alternate image sequence;
- causes the at least one inkjet to mark a test image on at least one blank portion of the intermediate substrate, the blank portion resulting from the alternate image sequence;
- causes a sensor to input the test image;
- and
- determines whether at least one of the at least one inkjet is defective based on the input test image.
A system for detecting a defective inkjet print head and inkjets, comprising:
- at least one controller that:
- causes at least one inkjet to mark images a rotating intermediate substrate according to a consecutive image sequence;
- causes the at least one inkjet to mark a test image on at least one blank portion of the intermediate substrate, the blank portion resulting from the consecutive image sequence;
- causes a sensor to input the test image;
- and
- determines whether at least one of the at least one inkjets is defective based on the input test image.
A method for detecting a defect in an inkjet print head, comprising:
- marking images on at least one substrate according to a consecutive image sequence;
- marking, a test image on at least one blank portion of the at least one substrates, the blank portion resulting from the consecutive image sequence;
- evaluating the test image with an electronic sensor, prior to being output;
- and
- determining whether the inkjet print head is defective based on the evaluation.
Dependencies are inferred from the claim text.