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:
Nov. 06, 2001
Filed:
Apr. 09, 1998
Shogo Sato, Miyagi, JP;
Osamu Maniwa, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
Excellent coating device and method are disclosed which realize high-speed coating by improving the rigidity of a coating solution film and increasing the pressure of a coating solution film to a support so as not to be inferior to the wind pressure of an air film. In the coating method for extruding and applying an organic solvent contained in a paint used for a magnetic tape onto a continuously traveling support from a slit of an extrusion die, the slit spacing tl is set to not greater than 50 &mgr;m and the gap t2 between the support and the extrusion die is set to 0.5 to 2 mm, while the extrusion speed of the organic solvent from the slit is set to not lower than 2.5 m/sec. A uniform film may be formed over a coating width only by the kinetic energy of the extruded solvent so as to enable realization of high coating film rigidity and coating solution pressure. Thus, high-speed coating onto the continuously traveling support may be carried out in a non-contact manner.