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:
Dec. 02, 1986
Filed:
May. 29, 1985
Takeshi Hori, Kanagawa, JP;
Yoshiharu Higano, Tokyo, JP;
Toshio Shirai, Kanagawa, JP;
Toru Naganuma, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A master tape and a slave tape are driven so that successive portions of each are brought into substantial contact with successive portions of the other at a printing station. A printing magnetic field is applied to such successive portions while they are in substantial contact with each other at the printing station, so that data on the master tape is copied onto the slave tape and the slave tape becomes a copy of the master tape. A single master tape can thus be employed to produce a plurality of copies. A counter counts the number of copies thus produced, and an indicator provides an indication corresponding to the remaining life expectancy of the master tape.