| 摘要 |
PURPOSE:To facilitate setting of a film to a correct position in the dark, by providing positioning members to be brought into contact with the 2 adjacent sides of the film, and means for detecting contacts of said members with said sides. CONSTITUTION:Standard pins 20, 21 are fixed to a film-placing plate 4 so as to bring them into contact with one of the 2 adjacent sides of a rectangular film 10, and one standard pin 22 is fixed to bring it into contact with the other side. The 2 sides of the film 10 are brought into contact with all these pins 20, 21, 22. The pins are insulated from the plate 4 with electrically insulating bushes 24, and each of them is used as an independent electrode. The lead wires of the pins 20, 21, 22 are connected to an AND circuit 30 through an electrostatic detectors 31, and indicating lamps are turned on by signals fed to their output terminals. A red lamp 40 is lighted when each pin comes into contact with the side. |
