INTEGRATED PRINTING/SCANNING SYSTEM USING INVISIBLE INK FOR DOCUMENT TRACKING
First Claim
1. A document printing and verification system, comprising:
- a printing apparatus for printing an image on a print medium;
an inkjet printer apparatus comprising an inkjet printhead adapted to emit ink droplets of an invisible ink which is not visible to the unaided eye when viewed with natural light illumination for printing an invisible identification pattern on the print medium which is not visible to the unaided eye when viewed with natural light;
a scanner apparatus positioned for producing an image of said identification image for verification use, said scanner apparatus including a light source for illuminating an imaging zone with light including nonvisible energy components and a camera sensitive to nonvisible light from the print medium to form an image of said nonvisible identification image.
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Accused Products
Abstract
A document printing and verification system and method. The system includes a printing apparatus for printing an image on a print medium, and an inkjet printer apparatus for printing an invisible identification pattern such as a barcode on the print medium which is invisible to the naked eye under normal ambient illumination. A scanner apparatus is positioned for producing an image of the identification image for verification use. The scanner apparatus includes a light source for illuminating an imaging zone with light including nonvisible energy components and a camera sensitive to nonvisible light from the print medium to form an image of the nonvisible identification image. The inkjet printhead is a high resolution printhead adapted to provide inkjet barcode printing resolution at least as high as 600 dots per inch, improving edge acuity of the pattern, and permits very high density information to be imprinted on the document page. The inkjet ink includes a UV dye and an FR/IR dye. The UV dye when illuminated with UV light provides an image of the barcode which is visible to the naked eye. The FR/IR dye is imaged using an FR/IR camera to capture electronically an image of the barcode.
36 Citations
25 Claims
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1. A document printing and verification system, comprising:
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a printing apparatus for printing an image on a print medium;
an inkjet printer apparatus comprising an inkjet printhead adapted to emit ink droplets of an invisible ink which is not visible to the unaided eye when viewed with natural light illumination for printing an invisible identification pattern on the print medium which is not visible to the unaided eye when viewed with natural light;
a scanner apparatus positioned for producing an image of said identification image for verification use, said scanner apparatus including a light source for illuminating an imaging zone with light including nonvisible energy components and a camera sensitive to nonvisible light from the print medium to form an image of said nonvisible identification image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 25)
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16. A method for document printing and verification, comprising the following steps:
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printing a page of a document;
printing an identification pattern on said document page using an inkjet printer, said pattern printed with ink which is invisible to the unaided eye under natural light illumination;
illuminating the document page with light energy including energy components in a non-visible band;
electronically capturing an image of said identification pattern at said imaging zone; and
performing a verification procedure using said electronically captured image.
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24. A document printing and verification system, comprising:
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a medium path along which a print medium is passed;
an electrophotographic printer for printing an image on said print medium;
an inkjet printer apparatus positioned along the medium path downstream of the electrophotographic printer, said printer apparatus comprising an inkjet printhead adapted to emit ink droplets of an ink which is not visible under natural illumination for printing an invisible barcode on said print medium which is invisible to the unaided eye under natural illumination;
a scanner apparatus positioned along the medium path downstream of the inkjet printer apparatus for producing an image of said barcode for verification use, said scanner apparatus including a light source for illuminating an imaging zone along said medium path with light including nonvisible energy components and a camera sensitive to illumination light from the print medium to form an image of said nonvisible barcode; and
a system controller for controlling the inkjet printing apparatus and responsive to image signals from the scanner apparatus to verify the presence of barcoded print media.
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Specification