Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1997-12-30
1999-09-14
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record medium
In container
360134, G11B 2710
Patent
active
059531860
ABSTRACT:
The object of this invention is to make it possible for a light transmitting member to be easily assembled onto a cover member molded from an opaque synthetic resin, and to prevent the constitutive elements from falling even when exposed to a shock. This object is attained by providing a recording medium cartridge device including an optical detection section which is produced after a light transmitting member has been attached to a window which is formed on the front panel of a cover member, or an element, in combination with a base plate molded from an opaque synthetic resin, to form the cartridge body accommodating a recording medium. The cover member has, as integral elements, holding rib walls which run continuously along both lateral edges of the window, inner surface of front panel and a ceiling surface, and which form engaging grooves with the inner surface which are joined with both lateral edges of the light transmitting member, and elasticity retaining rib pieces placed close to the window which press the light transmitting member attached to the window inward to securely hold the latter.
REFERENCES:
patent: 4644433 (1987-02-01), Horikawa et al.
patent: 4862305 (1989-08-01), Katagiri et al.
patent: 5311030 (1994-05-01), Higuchi et al.
patent: 5579191 (1996-11-01), Alexander et al.
Frommer William S.
Sony Corporation
Wolff John H.
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