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Patent Searching and Data


Title:
RECORD DISC STYLUS
Document Type and Number:
Japanese Patent JPS5616911
Kind Code:
A
Abstract:

PURPOSE: To obtain the record disc stylus in low cost and rich in mass-productivity, by forming the material with high specific elasticity into hollow shape in which the tip is closed.

CONSTITUTION: The layer 17 consisting of high specific elasticity material e.g. boron) having ≥5,000kg/cm2 specific modulus and ≥9 Mohs hardness is formed on the aluminum wire 15 by utilizing evacuated chemical vapor deposition unit, and it is cut off at the middle. This is chemically etched to remove the aluminum wire 15 to form the record disc stylus 19 consisting only of boron, and the tip is polished to desired stylus tip shape with polishing agent (e.g. diamond powder) to obtain the record disc stylus 20.


Inventors:
AZUMA KOUICHI
Application Number:
JP9017479A
Publication Date:
February 18, 1981
Filing Date:
July 16, 1979
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G11B3/46; (IPC1-7): G11B3/46