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:
Jul. 01, 1997
Filed:
Mar. 22, 1995
Ryuji Hosogaya, Saku, JP;
Eizo Tsunoda, Komoro, JP;
Akira Hatakeyama, Saku, JP;
Yoshihisa Osawa, Miyota-machi, JP;
Hideki Tanaka, Saku, JP;
Seiichi Tobisawa, Hino, JP;
TDK Corporation, Tokyo, JP;
Konica Corporation, Tokyo, JP;
Abstract
The center line average roughness (Ra) of the slit inner surfaces is made in a predetermined range of 5.0 .mu.m according to the present invention, and the straightness (W1) in the delivery direction of the coating solution thereof and the straightness (W2) in the perpendicular direction to the delivery direction thereof are made in predetermined ranges respectively in preferred embodiments. Thereby, development of wrinkles and inclined elongation in the tape itself are prevented when wound on a roll, the productivity is increased, and the product quality is improved.