A compact medium scanner (100) scans a surface (132) of a medium (134) with a beam of light (106). A medium transport mechanism (202, 206) advances the surface along a medium transport path through a scanning station. A light source (104) produces a collimated beam of light (106) that impinges...http://www.google.de/patents/US5841553?utm_source=gb-gplus-sharePatent US5841553 - Compact document scanner or printer engine
