| 摘要 |
PURPOSE:To ensure the accurate holding of detected information, by converting the information of film into the degree of displacement of a displacement member and then storing the displacement. CONSTITUTION:Detecting means 100-111 detect the information given to a film; a displacement member 19 has a mechanical displacement; and a converting means 118 converts the position of the member 119 into the corresponding electric signal. In addition, a comparator 115 that compares the detection signals of the means 100-111 with the electric signal of the means 118 and then produces a signal when the prescribed relation is obtained between these two signals. Then the stopping means 117 and Mg receive the signal from the comparator 115 and stops the displacement of the member 119. In such constitution, the film information is converted into the position of the member 119 and then stored. |
