| 摘要 |
In a tape cassette having a cassette casing constituted by upper and lower, substantially rectangular halves which are secured together in mating relation for enclosing a pair of reel hubs rotatably mounted in side-by-side relation and a magnetic tape wound on the hubs and being guided therebetween in a path extending along one side of the casing; each of the upper and lower casing halves includes an opaque frame having a substantially large window opening therein and a window member of transparent resin closing the window opening of the respective opaque frame and being secured to the latter adjacent the peripheries of the window opening and window member, respectively, and projections formed integrally with the window member of at least one of the casing halves and each extending therefrom in the direction toward the interior of the casing for resisting inward removal of the respective window member from the window opening of the respective frame, and thereby maintaining the strength and rigidity of the cassette casing while permitting the use of window members of increased size for improved viewing of the tape and reel hubs within the casing.
|
