Abstract: A magnetic recording medium includes a nonmagnetic substrate and at least a magnetic layer, a protective layer, and a lubricating layer provided on the nonmagnetic substrate. The magnetic recording medium is characterized in that the lubricating layer is formed of a lubricating agent represented by general formulas (1), (2) or (3), in which substituents R1, R2, R3, and R4 in the lubricating agent represent organic groups, at least one of the substituents R1 and R2 at the end part of the lubricating agent and the substituents R3 and R4 contain a plurality of functional groups, and the shortest distance between the functional groups is a distance of three or more atoms, preferably five atoms. The magnetic recording medium may be used for a heat assisted recording method in which the temperature of the magnetic layer reaches 150° C. to 200° C.

Abstract: A magnetic recording medium having high bonding capability between the surface lubricant and the diamond-like carbon (DLC) protective layer in the surface of the magnetic recording medium is disclosed. The lubricant is a fluorine-containing lubricant for magnetic recording media represented by the following formula (1), (2) or (3), wherein the substituents R1, R2, R3, R4, R5 and R6 in the terminal part of the lubricant each independently represent an organic group, and at least one of the substituents R1 and R2, at least one of the substituents R3 and R4, and at least one of the substituents R5 and R6 each have an isocyanate group: Also disclosed is a magnetic recording medium using the lubricant.

Abstract: A magnetic recording medium for use in a thermally assisted recording system is disclosed. The magnetic recording medium comprises at least a magnetic layer, a protective layer and a lubricant layer formed on a nonmagnetic substrate, wherein a lubricant of the lubricant layer exhibits such a heat resistance that an amount of volatilization when the magnetic layer is heated to a temperature not lower than a temperature Tw is less than 1% with respect to an initial amount of the lubricant in an unheated condition. The present invention addresses a problem of the heat resistance performance of the lubricant for use in magnetic recording media and provides a magnetic recording medium exhibiting high heat resistance.

Abstract: A magnetic recording medium includes a nonmagnetic substrate and at least a magnetic layer, a protective layer, and a lubricating layer provided on the nonmagnetic substrate. The magnetic recording medium is characterized in that the lubricating layer is formed of a lubricating agent represented by general formulas (1), (2) or (3), in which substituents R1, R2, R3, and R4 in the lubricating agent represent organic groups, at least one of the substituents R1 and R2 at the end part of the lubricating agent and the substituents R3 and R4 contain a plurality of functional groups, and the shortest distance between the functional groups is a distance of three or more atoms, preferably five atoms. The magnetic recording medium may be used for a heat assisted recording method in which the temperature of the magnetic layer reaches 150° C. to 200° C.

Abstract: A magnetic recording medium having high bonding capability between the surface lubricant and the diamond-like carbon (DLC) protective layer in the surface of the magnetic recording medium is disclosed. The lubricant is a fluorine-containing lubricant for magnetic recording media represented by the following formula (1), (2) or (3), wherein the substituents R1, R2, R3, R4, R5 and R6 in the terminal part of the lubricant each independently represent an organic group, and at least one of the substituents R1 and R2, at least one of the substituents R3 and R4, and at least one of the substituents R5 and R6 each have an isocyanate group: Also disclosed is a magnetic recording medium using the lubricant.

Abstract: A magnetic recording medium for use in a thermally assisted recording system is disclosed. The magnetic recording medium comprises at least a magnetic layer, a protective layer and a lubricant layer formed on a nonmagnetic substrate, wherein a lubricant of the lubricant layer exhibits such a heat resistance that an amount of volatilization when the magnetic layer is heated to a temperature not lower than a temperature Tw is less than 1% with respect to an initial amount of the lubricant in an unheated condition. The present invention addresses a problem of the heat resistance performance of the lubricant for use in magnetic recording media and provides a magnetic recording medium exhibiting high heat resistance.

Abstract: After making the relative humidity in a working chamber 1 to 10% or less beforehand, hydrogen peroxide vapor supply means 2 is operated, and hydrogen peroxide solution is dropped from an injector 14 into an evaporator 12 for 3 minutes at a flow rate of 5 g/min. Thereby, hydrogen peroxide vapor is rapidly supplied to the above-mentioned working chamber 1, and the concentration of the hydrogen peroxide vapor in the working chamber 1 is set to about 1300 ppm. Dropping of hydrogen peroxide solution with the injector 14 is stopped and the state of a closed circuit between the working chamber and the hydrogen peroxide vapor supply means is maintained for a predetermined time, and if the concentration of hydrogen peroxide vapor becomes the predetermined concentration or below, ventilation means 4 is operated to remove the hydrogen peroxide vapor in the working chamber, and sterilization is terminated.

Abstract: An instantaneous switching unit for a delay/priority control buffer comprises an operational buffer and a standby buffer, wherein, upon detecting phase adjustment cell out of received signal cell, the operational buffer recognizes the amount of main signal cell which has been received before the phase adjustment cell is detected, the main signal cell staying waiting for the timing when it is read out, and notifies the standby buffer of staying amount information indicating the presence of the main signal cell staying there as well as the staying amount thereof, while the standby buffer controls the reading operation of the main signal cell according to the staying amount information received from the operational buffer upon detecting the phase adjustment cell out of the received signal cell.