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:
Aug. 06, 2002
Filed:
Dec. 08, 1999
Osamu Iwasaki, Kanagawa, JP;
Satoru Hayakawa, Kanagawa, JP;
Hiroo Inaba, Kanagawa, JP;
Takeshi Nagata, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
The magnetic tape processing method and apparatus allow at least one of a laser beam or laser beams in a visible region and a laser beam or laser beams in an ultraviolet region to be incident on a backing layer of a magnetic tape while transporting the magnetic tape in a lengthwise direction of the magnetic tape and process the backing layer by means of the laser beam or laser beams to form recesses on the backing layer. The processed magnetic tape is composed of a base layer, a magnetic layer formed on one surface of the base layer and the backing layer formed on another surface of the base layer and having recesses which are formed by processing the backing layer by means of the laser beam or laser beams. The method and apparatus can efficiently manufacture the magnetic tape having excellent characteristics such that the occurrence of the slip of the magnetic tape is not caused on a capstan roller and the like, even if the transportation speed of the tape is increased in a magnetic tape manufacturing apparatus, and furthermore a size of cupping of the magnetic tape is small.