| 摘要 |
PROBLEM TO BE SOLVED: To provide a cartridge assembly capable of imparting light shielding properties to a plastics member used for the cartridge assembly to eliminate transmission light transmitting through the plastics members, thereby preventing a photosensitive recording medium from being exposed by the transmission light rays. SOLUTION: The plastics member used for the cartridge assembly 20 freely rotatably housing the photosensitive recording medium 4 such as a hologram recording medium contains 0.4 to 1.5 wt.% carbon black. The plastics member may further contain 0.5 to 1.5 wt.% titanium oxide. COPYRIGHT: (C)2007,JPO&INPIT
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