Magnetic tape cassette
AssigneeTDK Electronics Co., Ltd.
InventorsToshihiko Ishida, Takateru Satou
Life of this patent
Estimating the term…
Abstract
An improved magnetic tape cassette and separation sheet therefor. The separation sheet, positioned between an inner wall and the tape reels of a cassette, is formed with at least one dome-like protrusion. A plurality of such protrusions are preferably utilized spaced throughout the sheet, each of a diameter R and height H sized to provide an R/H ratio of between about 100 and 10. The separation sheet may be formed with a protrusion shaped to fit into a window in an inner case wall, the window-fitting protrusion extending from a side of said separation sheet opposite from that containing said dome-like protrusions.
Claims9
In a separation sheet for a magnetic tape cassette comprising a sheet to be positioned between an inner wall and the tape reels of a cassette, the improvement in which the sheet is formed with at least one dome-like protrusion, in which said sheet is formed with an additional protrusion on a side of said sheet opposite from that containing said dome-like protrusion and shaped to fit into a window formed in said inner wall of said cassette.
In a magnetic tape cassette comprising a case that houses rotatable tape reels, said case including an inner wall adjacent to said reels, guide means for guiding the magnetic tape from one reel to another, and a separation sheet interposed between said inner case wall and said magnetic tape reels;
- the improvement in which said separation sheet is formed with a plurality of dome-like protrusions spaced throughout said sheet, in which said inner case wall includes a window therein, and said separation sheet is formed with a protrusion shaped to fit into said window.
In a magnetic tape cassette comprising a case that houses rotatable tape reels, said case including an inner wall adjacent to said reels and extending generally perpendicular to the axes of said reels, guide means for guiding the magnetic tape from one reel to another, and a separation sheet interposed between said inner case wall and said magnetic tape reels and lying generally parallel to said inner wall;
- the improvement in which said separation sheet is formed with a plurality of generally semi-hemispherical dome-like protrusions spaced throughout said sheet on the side thereof adjacent to said tape reels, and said protrusions are spaced one from another generally in a symmetrical pattern about the axes of said rotatable tape reels.
Dependencies are inferred from the claim text.