Title:
MEASUREMENT OF SMOOTHNESS
Document Type and Number:
Japanese Patent JPS5970906
Kind Code:
A
Abstract:
PURPOSE: To measure the surface roughness of a sheet to be measured such as a sheet comprising rubber or plastics, paper or an information recording material by using a fluid, by holding the sheet to be measured between the flat surface of a rigid body equipped with a gas passing orifice and a rigid body.
CONSTITUTION: A specimen 1 is held between the flat surface 2 of a rigid body equipped with a gas passing orifice 4 and the flat surface 3 of a gas impervious rigid body. In this state, the gas passing orifice 4 is evacuated to measure the passing time of a predetermined volume of gas and the smoothness of the speciment 1 is calculated from the gas passing time.
Inventors:
SHIMOMA WATARU
TAGUCHI NOBUYOSHI
SHIMIZU TOKIHIKO
HOTSUTA OSAMU
TAGUCHI NOBUYOSHI
SHIMIZU TOKIHIKO
HOTSUTA OSAMU
Application Number:
JP18072982A
Publication Date:
April 21, 1984
Filing Date:
October 14, 1982
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G01B13/22; (IPC1-7): G01B13/22
Attorney, Agent or Firm:
Toshio Nakao