| 摘要 |
PURPOSE:To precisely detect a printed face. CONSTITUTION:In a printed face detecting sensor feeding the light emitted from light emitting elements to a printed face 3 conveyed in the preset direction, receiving the reflected light with light receiving elements, converting it into an electric quantity, and detecting the printed face 3, multiple light reception sections 7 are provided on both sides of a light emission section 6 respectively. Each light reception section 7 has a printed board 16 and the light receiving elements arranged in one line or multiple lines on the printed board 16. |
