| 摘要 |
<p>A light-tight cassette for photographic material, which has the form of a box (11) having wall portions (26,27) defining an exit slot (15) for material drawn from a roll (19). The exit slot has light-sealing means which is formed by co-operating flexible (31,32) lips, and ribs (36,37) which limit the deflection of the lips.</p><p>The box and the flexible lips are preferably made by the co-extrusion of suitable plastics.</p><p>The cassette has the advantage that a satisfactory light-tightness of the dispenser slot is obtained for very flexible lips, so that damage to the film by frictional contact with the lips is avoided.</p> |
