Patent ID: 8559065
Filing Date: 2013-10-15
Classification: H04N

Abstract:
1. An apparatus for optical analysis of images on sheets, comprising: a structure forming a baffle for passage of a sheet therethrough, wherein the baffle has an aperture to allow a slidable calibration strip holder in to the passage; a photosensor disposed to receive light reflected from an object in the baffle; the slidable calibration strip holder having a target surface associated therewith and a side which serves as a guide for the passage of the sheet through the baffle, wherein the slidable calibration strip holder position the target surface adjacent to the photosensor and position the target surface outside the passage; a calibration member on the target surface having a reference reflectivity, the calibration member lying outside the passage when the slidable calibration strip holder serves as the guide for passage of the sheet through the baffle.