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:
Apr. 26, 1988
Filed:
Jul. 23, 1984
Kimio Ogawa, Yokohama, JP;
Victor Company of Japan, Limited, Yokohama, JP;
Abstract
A colorful and aesthetically desirable tape cassette constructed to allow a tape end sensing device, which is built in an audio or video tape recording and playback apparatus, to optically sense an end of a magnetic tape with accuracy and without malfunctions. A housing of the tape cassette shows transmittance lower than 0.05 percent at a thickness of 0.05 millimeter and reflectivity lower than about 7 percent for wavelengths of 400-1100 nanometers. Transparent windows through which one can see the tape inside the cassette are made of a transparent material containing an agent which is absorptive for near-infrared rays in the wavelength range of 400-1100 nanometers.