Visual monitoring device which projects an image of a register mark onto a scanning surface for use in setting image processing conditions

摘要

Image processing conditions for scanning and processing an original by an electronic process scanner are set by an external image processing condition setting apparatus wherein a first system of coordinates is prepared in the scanner for processing, and a second system of coordinates is prepared in the image processing condition setting apparatus for position setting. An original cylinder is commonly used by both the scanner and apparatus, and by using a marked line formed on the surface of the cylinder as a reference position, both systems of coordinates are matched. A visual monitoring device which projects an image of a register mark onto the surface of the original cylinder is used in setting the image processing conditions. The visual monitoring device magnifies the image of the mark and a peripheral area of the surface of the cylinder, thereby enabling an operator to accurately locate a given position on the cylinder.