| 摘要 |
PURPOSE:To permit correct plate inspection according to the densities of plates and the kinds of plate inspection by comparing the signals from two TV cameras by a comparator and permitting the adjustment of a decision level to make abnormal output. CONSTITUTION:The signals from the cameras 30, 31 are inputted to a comparator 50 and are compared by the same. If the two signals vary and the level thereof is above a specified level, the signal of abnormality is sent to a TV controller 27 and a CPU 52. This level can be adjusted by a knob 82 of an operation panel 80. The exact plate inspection according to the densities of the plates and the kinds the plate inspection in the case of inspecting the plate having a high density, the plate having a low density and characters and in the case of inspection the plates having graphic designs, etc., is thereby permitted. |
