| 摘要 |
A cartridge case comprises a generally rectangular bottom plate (2), a first side plate (3), a second side plate (4) and a third side plate (5). The cartridge case is provided with a insertion opening (6) through which a cartridge is inserted into the case. The inner surface of the first side plate (3) is provided with a first rib (7), and the inner surface of the second side plate (4) is provided with a second rib (8).
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