SUBSTRATE FOR MAGNETIC RECORDING MEDIUM, METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM, AND SUBSTRATE CLEANING DEVICE

PROBLEM TO BE SOLVED: To enable a magnetic head to float and travel stably by removing foreign fine particles having zeta potential unlikely to be removed by a conventional cleaning method and preventing the re-adhesion, by the zeta potential, of the foreign fine particles in the course of being cleaned. SOLUTION: A so-called overflow system is adopted, in which the overflow system continuously supplies pure water from a pure water introduction pipe 6 open at a lower portion in a cleaning tank (water tank) 1. A substrate 2 to be cleaned and a counter electrode (electrode) 4 that faces the substrate 2 to be cleaned and is made of platinum (Pt) are dipped into the pure water in the cleaning tank 1. A substrate cleaning device comprising a voltage application type cleaning tank is used for cleaning, where a specified DC voltage or an AC voltage is applied to the substrate 2 by connecting an external power supply 3 to the counter electrode 4 through a conductor 5. COPYRIGHT: (C)2005,JPO&NCIPI