Patent ID: 6657817
Filing Date: 2003-12-02
Classification: G11B

Abstract:
A cassette housing case for regulating positional shift, comprising:an engagement recess formed in one of top and bottom surfaces of said cassette housing case and having a pattern which is asymmetrical with respect to at least either a first center line drawn in said one surface in parallel with a reference surface, or a second line drawn on said one surface which bisects said first center line in a direction perpendicular to said first center line; and an engagement protrusion formed in the other of said top and bottom surfaces and having a corresponding pattern engageable with said engagement recess, wherein said reference surface is a side surface of said cassette housing case having a label area, such that when a plurality of cassette housing cases are stacked on top of each other, a label in said label area of each of said plurality of cassette housing cases faces the same direction.