| 摘要 |
<p>PURPOSE:To provide a light reflection type board detector in which the alignment is simplified. CONSTITUTION:In a board detector comprising detectors 5, 6 for detecting a board 7 mounted on a board mounting part 8 based on the light reflected on the board 7, a gap is formed between the board and surface of the board mounting part 10 in order to shift the optical axis of the light reflected on the top surface of the board from that of the light reflected on the surface of the board mounting part. Consequently, the light reflection type detectors 5, 6 detect only the detection light reflected on the surface of the board thus detecting presence or absence of board at the board mounting part.</p> |
