Patent ID: 6166394
Filing Date: 2000-12-26
Classification: H04N

Abstract:
In a document imaging system with a document apertures image prevention system, wherein document sheets, some of which include apertured document sheets, are moved past a document scanning imaging station by a document feeding system to be illuminated by a document illumination system and imaged by a document imager in said document imaging station, and wherein at least one edge of a document sheet is detected in said document imaging station by said document imager, the improvement comprising:a dual mode imaging background system,said dual mode imaging background system comprising a substantially dark light absorbing imaging background surface area and a substantially light reflective imaging background surface area for said document imaging station,said dual mode imaging background system automatically selecting by mechanical movement said substantially dark light absorbing imaging background surface area to be illuminated by said document illumination system and imaged by said document imager in said document imaging station, andsaid dual mode imaging background system automatically selecting by mechanical movement said substantially light reflective imaging background surface area to be illuminated by said document illumination system and imaged by said document imager in said document imaging station for said apertured document sheets being imaged in said document imaging station by said document imager.