| 摘要 |
An inspection device is disclosed which includes a color sensor which has a plurality of photoelectric conversion elements each being responsive to respective different wave lengths of light from an object to be inspected and producing an electrical signal, a zero balance setter which processes the output signal from the color sensor and then takes a zero balance, a tolerance range setter which receives the output of the zero balance setter and produces an abnormal signal in conjunction to a tolerance range of the object to be inspected, a detector which produces an electrical signal to notify when the object arrives at a predetermined location; and a detection location timing section which passes the output of the tolerance range setter by the output signal from the detector.
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