Patent ID: 7755808
Filing Date: 2010-07-13
Classification: H04N

Abstract:
1. A computer-implemented method comprising: using a computer, sensing first document presence data of a media sheet in a media path wherein said sensing of said first document presence data comprises detecting a leading edge of said media sheet; using said computer, calculating a background correction factor for scanning said media sheet; using said computer, obtaining second document presence data from said background correction factor; using said computer to determine if said second document presence data indicates that no media sheet is present, obtaining third document presence data relating to registration of said media sheet within said media path from a lead edge registration function of an electronic registration component; and using said computer to determine if said first document presence data indicates that said media sheet is present, said second document presence data indicates that no media sheet is present, and said third document presence data indicates that no media sheet is present, providing a notification that said media path needs cleaning.