Duplicating apparatus having unit for recognizing special original

摘要

A duplicating apparatus comprises an image reading unit which reads an original optically and outputs image signals; an image processing unit which processes the image signals received from the image reading unit by a given method, and outputs image data; a printer unit (1) which forms on a recording sheet an image corresponding to the image data received from the image processing unit; a judging unit which determines whether the probability that the original is a particular one such as a bill is in a first rank or a second rank lower than the first rank; a control unit which prohibits the formation of images corresponding to the original on the recording sheet when the result of the judgement by the judging unit shows the first rank; and a marking unit which makes a given mark on the recording sheet if the result of the judgment shows the second rank.