Patent ID: 8561902

Claim:
A system for reducing erroneous weighing of an item on a weigh platter of a scanner-scale, comprising a light source disposed in or on a housing of the scanner-scale for producing a light beam; a detector for receiving the light beam, the detector disposed in or on the housing, wherein the light beam is directed along an optical path extending (a) from the light source, (b) along a path proximate an upper side edge of the weigh platter, and (c) to the detector, a light pipe disposed in the housing and extending along and/or through the weigh platter, wherein the light pipe provides at least a portion of the optical path for the light beam between the light source and the detector, wherein the detector is operative for detecting an interruption of the light beam due to an item encroaching upon or overhanging an edge of the weigh platter.