Methods, apparatuses, and systems for verifying printed image and improving print quality
AssigneeDatamax-O'Neil Corporation
InventorsJose Fernando Sanchez Gutierrez, Ronald Schwallie, Thomas Axel Jonas Celinder, H Sprague Ackley
Life of this patent
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Abstract
A method for evaluating a print quality of a printed document that is printed by a printer is provided. The printer comprises a pre-print image scanner, a post-print image scanner, and a printhead disposed between the pre-print image scanner and the post-print image scanner. The method comprises generating a pre-printing image of a print media, generating the printed document, generating a post-printing image of the printed document, generating a validation image by comparing the post-printing image with the pre-printing image, and comparing the validation image with the source image.
Claims20
A method of printing an image on print media with a printer, the method comprising:
- receiving at least part of print data used to generate an image;
- receiving a reference image or generating the reference image from at least part of the print data;
- scanning, by a pre-print sensor, a print media when the media has not yet been imprinted by the printer;
- printing, by the printer, a print media;
- scanning, by a post-print sensor, the printed media;
- subtracting, by a processor, pre-printed image from post-printing image to generate a validation image;
- and
- comparing, by the processor, the reference image to the validation image;
- in response to determining, by the processor, that the validation image does not conform to the reference image, generating a notice about the non-conforming image.
A printer comprising:
- a pre-print sensor configured to scan a print media when the media has not yet been imprinted by the printer;
- a printing mechanism configured to print images onto the print media;
- a post-print sensor configured to scan print media after the print media has been imprinted by printer;
- a processor configured to communicate with the pre-print sensor and post-print sensor, subtracting pre-printed image from post-printing image and generating a validation image;
- the processor further configured to receive a reference image or generating the reference image from at least part of the print data;
- a memory configured to store the reference image and the validation image;
- wherein, when the processor determines that validation image does not conform to the reference image by comparing the validation image with the reference image, the processor generates a notice about the non-conforming captured image to a user of the printer.
A system for printing an image and verifying a print quality of the image comprising:
- a printer comprising a processor, a memory and a communication module wherein the printer is configured to print image onto a print media;
- a verifier comprising an imaging module, a verifier processor and a verifier memory, wherein the verifier is configured to capture a representation of printed media;
- a network, communicatively coupling the verifier to the printer;
- responsive to the verifier processor determining that captured representation of the printed image does not conform to the reference image by comparing a horizontal position of the captured representation with a horizontal position of the reference image, the verifier processor modifies at least part of print data used to generate the image prior to generate a succeeding image.
Dependencies are inferred from the claim text.