| 摘要 |
PROBLEM TO BE SOLVED: To position a monitoring sensor at all times in a printing unit of offset duplicator and obtain some information for observation and stabilization of ink, a dipping water or mixture condition thereof. SOLUTION: The optical measuring device for printer is provided with an optical measuring sensor, conveyer means of optical transparent film to wind in and unwind the optical transparent film so that the sensing side in front of the optical measuring sensor is covered with the optical transparent film in a way of passage from the unwinding position to the winding position of the optical transparent film, and covering means to cover the optical measuring sensor and the conveyer means of optical transparent film thoroughly. |
