| 摘要 |
A magnetic disk cartridge comprises a shell constituted by upper and lower shell halves and having a hole for insertion of a magnetic head, a shutter extending over an edge face of the shell, and a shutter spring provided with bent portions at extremities of two arms. A spring guide is formed on the inner surface of the upper or lower shell half, whichever is positioned on the extremity side of the bent portion of the shutter spring engaged with the shutter, at a hole provided for insertion of the shutter spring. The spring guide has a tapered portion, and extends from the tapered portion at least to the edge of the shutter at its hole closing position. The thickness h from the inner surface of the spring guide at the region overlapping the edge of the shutter at its hole closing position to the outer surface of the shell half provided with the spring guide is not smaller than the internal dimension g of the bent portion of the shutter spring engaged with the shutter.
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