FRICTION PROPERTY MEASURING METHOD FOR NON-CONTACT TYPE RECORDING MEDIUMS, AND FRICTION PROPERTY MEASURING DEVICE FOR NON-CONTACT TYPE RECORDING MEDIUMS

摘要

A friction property measuring method for non-contact type recording mediums is such that, with a ball (13) contacted with the surface of a recording medium (1) to apply a given load thereto, the recording medium (1) and the ball (13) are slid at a given relative speed and a pulling force (F) produced on the ball (13) is detected to thereby measure the friction property on the surface of the recording medium (1), in which measurement a resin ball (13) is used. This makes possible a low-cost accurate measurement of the friction property on the surface of the recording medium (1).