×

Show-through measurement system and method for inks on media

  • US 8,503,733 B2
  • Filed: 11/16/2009
  • Issued: 08/06/2013
  • Est. Priority Date: 11/16/2009
  • Status: Active Grant
First Claim
Patent Images

1. A method of measuring show-through of a printed document, comprising:

  • forming a digital image of a back side of the printed document;

    forming a digital image of a front side of the printed document with a substrate disposed thereon;

    determining a back side bit depth array from the back side digital image and a front side bit depth array from the front side digital image;

    comparing the back side bit depth array to the front side bit depth array, wherein the comparing comprises;

    calculating respective difference values between values of the back side bit depth array and a minimum value of the front side bit depth array; and

    calculating a mean and a standard deviation of the respective difference values; and

    determining a show-through of the printed document based on the comparing the back side bit depth array to the front side bit depth array.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×