Patents Assigned to Bayer Corp. AGFA Division
  • Image position error detection technique
    Patent number: 5857784
    Abstract: A method for detecting image position errors, includes forming a first pattern with a symbol embedded therein and a second pattern which, when superpositioned on the first pattern, exposes the symbol if the misalignment between the first and second patterns exceeds a position error tolerance. The symbol is perceivable with the unaided eye even if the misalignment is imperceivable to the unaided eye.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: January 12, 1999
    Assignee: Bayer Corp. AGFA Division
    Inventor: Roy D. Allen