Prism for a data cartridge

Details Prism for a data cartridge Prism for a data cartridge

1995-07-17

1996-11-26

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record medium

In container

242344, 359833, G11B 23087, G11B 1518, G03B 2302, G02B 504

Patent

active

055791913

ABSTRACT:
A prism is provided for deflecting light through the tape information holes in the tape of a data cartridge. The prism includes a substantially hollow main prism body. The inside surface of the angled prism surface is formed in steps, so that light passing into the angled portion passes in the normal direction through a step, is reflected off of the angled surface, and then passes in the normal direction through the adjacent side of the step, or the adjacent side of the next step. In this fashion, minimal plastic material is required for the prism, while light reflection is restricted to only a single surface. An alternative embodiment provides steps on the internal surface of a mirror, instead of a prism.

REFERENCES:
patent: 2154360 (1939-04-01), Scheel et al.
patent: 3860329 (1975-01-01), Baker et al.
patent: 4235515 (1980-11-01), Sheiman et al.
patent: 4607299 (1986-08-01), Oishi et al.
patent: 4665456 (1987-05-01), Ahlberg et al.
patent: 4763217 (1988-08-01), Oishi
patent: 4783022 (1988-11-01), Onmori et al.
patent: 4862305 (1989-08-01), Katagiri et al.
patent: 5056892 (1991-10-01), Cobb, Jr.
patent: 5121275 (1992-06-01), Komiyama
patent: 5311030 (1994-05-01), Higuchi et al.
patent: 5335131 (1994-08-01), Sato et al.

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