The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 1987
Filed:
Dec. 02, 1983
Yoshiaki Wakui, Tokyo, JP;
Hiroyuki Umeda, Yokohama, JP;
Abstract
A tape cassette is used with a recording and/or reproducing apparatus which has an optical tape end detector which is constituted by a light emitting element and light receiving elements. The tape cassette comprises an opaque cassette case having a transparent window, and a lid located at the front of the cassette case. The cassette case accommodates therein a supply reel, a take-up reel, and a magnetic tape. The transparent window enables visual detection of a wound state of the magnetic tape with respect to the reels. The magnetic tape has transparent tapes connected at ends thereof, and forms a predetermined tape path along the front of the cassette case. The transparent tapes are optically detected by the optical tape end detector when the transparent tapes are drawn out from the reels. The lid is capable of assuming an open state and a closed state, and covers the magnetic tape in the predetermined tape path in its closed state. The transparent window is formed in a top plate of the cassette case, in a region which is closer to the rear of the cassette case than a line which passes centers of the reels in a plan view of the tape cassette.