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. 06, 1986
Filed:
Jan. 27, 1984
Yoichi Odagiri, Yokohama, JP;
Tsuguo Sato, Yokohama, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention involves a method and apparatus to prolong the useful life of a drive tape used in a magnetic contact printer to advance master and copy tapes past a transcribing head to transcribe the signals from the master tape onto the copy tape. The present invention provides a method for using the entire length of the drive tape even though individual segments on different master tapes may be shorter than the length of the drive tape. In the method of the present invention the drive tape is rewound after each transcription only part of the way to the beginning of that transcription. The next transcription will then require the use of a part of the drive tape not used in the previous transcription. The apparatus of the present invention uses a digital logic circuit to carry out that method. The apparatus comprises a counter that senses the length of advance of the drive tape for each transcription and detectors that provide signals to terminate the rewindings of the drive tape at the proper points.