Title:
BASE FOR VIDEO TAPE
Document Type and Number:
Japanese Patent JPS5558830
Kind Code:
A
Abstract:
PURPOSE: To form the video tape less in skew amount, by using the base having specific optical characteristics.
CONSTITUTION: As the base for video tape, the difference of refractive ratio (Δn) between longitudinal and transversal directions of the base is used within +10× 10-3.
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Inventors:
ARAI YONEO
KAWAKAMI YOSHIO
KAWAKAMI YOSHIO
Application Number:
JP13062178A
Publication Date:
May 01, 1980
Filing Date:
October 24, 1978
Export Citation:
Assignee:
TDK ELECTRONICS CO LTD
International Classes:
C08L67/00; G11B5/73; (IPC1-7): G11B5/70