ABTASTEINRICHTUNG FUER HALBTON-DURCHSICHTSVORLAGEN.

摘要

The scanning system has the output of a laser (1) focussed onto a polygonal mirror (5) that is rotated at a controlled speed. The scanning beam generated by the mirror moves transversely across the width of the document (8). At the same time that line scanning takes place the document is moved at a controlled rate. Located on the underside of the document is a cylinder lense (10) that focusses the output onto a diffuser strip (11). Transmitted light is received by a mixer (12) leading to a cross section converter that consists of a number of fibre optic conductors leading to a photoelectric converter (14).