Printing inspection system

Abstract

Abstract PURPOSE:To quantitatively and rapidly perform inspection, by inspecting a printing state on the basis of a printing density state and a printed character confirming state. CONSTITUTION:A scanner part 1 performs scanning operation while printed matter is irradiated with light and temporally stores the reflected light thereof in an analogue memory as an electric signal 3 and also inputs said reflected light to a digital memory 5 to temporarily store the same therein as a digital signal. The output 6 of the memory 4 is inputted to a density measuring part 8 to measure printing density and the measured result 10 is supplied to a control part 12. The output 7 of the memory 5 is inputted to a character confirming part 9 to digitally confirm a printed character and the character confirming result 11 is supplied to the control part 12. The control part 12 uses the measured result 10 to compare the same with density becoming predetermined reference and automatically judges whether printing density is well. Further, the character confirming result 11 is used for conversion to a character code to judge the printed character and printing inferiority is judged when the printed character can not be judged.

Inventors

• 👤 Sakae Asano

Bibliographic Details