MECHANISM OF HAUSING CASSETTE FOR RECEIVING PHOTOSENSITIVE FILM SHEET

摘要

PURPOSE:To prevent a photosensitive film sheet in a cassette from erroneous exposure by locking the cassette with an electric locking means to block the cassette from careless withdrawal when a shade lid is opened. CONSTITUTION:A hook 37 is pivoted unticlockwise through a lever 35 by depressing a push button 31 to unlock a mechanical hook and withdrawal a cassette 1 to the outside of a machine. However, when a shade lid 4 is opened to withdraw a sheet after the beginning of print movement, an electromagnetic solenoid 43 is turned on and a claw 41a of a hook 41 engages a hole in an engaging plate 15 to lock an electric lock. The cassette 1 cannot be withdrain due to this locking even if a mechanical lock is unlockied by a hook 37 so that a photosensitive film sheet in the cassette 1 is prevented from erroneous exposure.