| 摘要 |
PROBLEM TO BE SOLVED: To provide a cartridge for a photosensitive recording medium where light-shielding performance is greatly improved by forming a Labyrinth part of the open end of a shutter and a shutter sliding surface, and where a shutter is moved smoothly to open and close an inner opening. SOLUTION: At the open end 55e of the shutter 13 with a U-shaped cross section, a shutter side wave-form rib 42 having one or more projected lines parallel to the opening and closing direction of the shutter 13 is provided. On a shutter sliding surface 25b a main body side wave-form rib 41 having one or more recessed grooves 25c fitting slidably to the projected lines 55d is provided. The shutter side wave-form rib 42 and the main body side wave-form rib 41 are fitted to each other to form the Labyrinth part to cut off outside light. COPYRIGHT: (C)2007,JPO&INPIT
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