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:
Jan. 16, 1990
Filed:
Dec. 02, 1987
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
This invention proposes to form a pair of protruding or projecting stripe portions along the tape-gliding face of magnetic tape and to reduce the pad pressure to magnetic tape thereby reducing the gliding resistance of magnetic tape without increasing its spacing loss (first embodiment), to incline the plane of the projecting stripe portions in a decreasing direction in the vicinity of the tape-gliding face in order to stabilize the pad contact (second embodiment), to form grooves on the tape-gliding face of the magnetic core in the transversal edge portions at least in the tape entrance side thereby facilitating prevention of tape squeaking (third embodiment), to increase the height of one of the projecting stripe portions in the vicinity of head mounting position compared to that of the other stripe portion thereby preventing one-sided abrasion of the tape-gliding face (fourth embodiment), and to form tape guide members on the magnetic head for guiding the magnetic tape closer to one of the projecting stripe portion at the head mounting position and separate from the other thereby preventing one-sided abrasion of the tape-gliding face (fifth embodiment).