US 2019/0102270 A1 · PRINT VERIFICATION SYSTEM THAT REPORTS DEFECTIVE PRINTHEADS

Abstract

Systems and methods are provided for print verification that reports defective printheads. One embodiment is a Print Verification System (PVS) that includes an interface to receive print data, and an imaging device to obtain image data of printed output of the print data. The PVS also includes a processor to detect a print error on a page by comparing the print data and the image data. The processor determines a lateral distance of a location of the print error with respect to an edge of the page, identifies a print engine that printed the page, determines a lateral offset of the print engine with respect to the edge of the page, identifies a printhead among a plurality of printheads of the print engine that caused the print error based on the lateral distance of the print error and the lateral offset of the print engine.

Claims20

Dependent claims

A system comprising:

a print verification system comprising:
an interface configured to receive print data representing pages to print on print media;
an imaging device configured to obtain image data of the pages printed on the print media;
and
a processor configured to detect a print error on a page by comparing the print data and the image data, to analyze the image data to determine a lateral distance of a location of the print error with respect to an edge of the page, to identify a print engine that printed the page, to determine a lateral offset of the print engine with respect to the edge of the page, to identify a printhead among a plurality of printheads of the print engine that caused the print error based on the lateral distance of the print error and the lateral offset of the print engine, to increment a count of errors for the printhead in a log stored in memory, and to report the count of errors for the printhead to a graphical user interface.

2 more elements

A method comprising:

receiving print data representing pages to print on print media;
obtaining image data of the pages printed on the print media;
detecting a print error on a page by comparing the print data and the image data;
analyzing the image data to determine a lateral distance of a location of the print error with respect to an edge of the page;
identifying a print engine that printed the page;
determining a lateral offset of the print engine with respect to the edge of the page;
identifying a printhead among a plurality of printheads of the print engine that caused the print error based on the lateral distance of the print error and the lateral offset of the print engine;
incrementing a count of errors for the printhead in a log stored in memory;
and
reporting the count of errors for the printhead to a graphical user interface.

7 more elements

A tangible computer readable medium including programmed instructions which, when executed by a processor, are operable for performing a method, the method comprising:

receiving print data representing pages to print on print media;
obtaining image data of the pages printed on the print media;
detecting a print error on a page by comparing the print data and the image data;
analyzing the image data to determine a lateral distance of a location of the print error with respect to an edge of the page;
identifying a print engine that printed the page;
determining a lateral offset of the print engine with respect to the edge of the page;
identifying a printhead among a plurality of printheads of the print engine that caused the print error based on the lateral distance of the print error and the lateral offset of the print engine;
incrementing a count of errors for the printhead in a log stored in memory;
and
reporting the count of errors for the printhead to a graphical user interface.

7 more elements

Dependencies are inferred from the claim text.

Print verification system that reports defective printheads

Life of this patent

Print verification system that reports defective printheads

Life of this patent

Abstract

Claims20