Showa Denko K.k.

Taining Hung

Daizo Endo

Satoru Nakamura

Evance Kuo

The present invention relates to a magnetic recording medium in which a lubricant layer contains a compound A represented by general formula (1) and a compound B represented by general formula (2), satisfying (A/B)=0.2 to 3.0, and has an average thickness of 0.8 nm to 2 nm. R&#x2014;CHOCHCH(OH)CHOCH&#x2014;R&#x2014;CHOCHCH(OH)CHOH . . . (1) (Ris an alkoxy group having 1 to 4 carbon atoms. Ris &#x2014;CFO(CFCFO)(CFO)CF&#x2014; (x, y=0 to 15), &#x2014;CFCFO(CFCFCFO)CFCF&#x2014; (z=1 to 15), &#x2014;CFCFCFO(CFCFCFCFO)CFCFCF&#x2014; (n=0 to 4). HOCHCFCFO(CFCFCFO)CFCFCHOCHCH(OH)CHOH . . . (2) (m is an integer).

Magnetic recording medium and magnetic recording/reproducing apparatus

A magnetic recording mediumin which the outermost surface of a protective layeron a lubricant layerside contains carbon and nitrogen of 10 atomic % to 90 atomic %, the lubricant layeris formed by being in contact with the outermost surface, and contains a compound A of Formula (1) and a compound B of Formula (2), a mass ratio (A/B) of the compound A with respect to the compound B is 0.2 to 0.3, the average molecular weights of the compounds A and B are 1,500 to 2,000 and 1,300 to 2,400, respectively, and the average film thickness is 0.5 nm to 2 nm.R1-CHOCHCH(OH)CHOCH&#x2014;R2-CHOCHCH(OH)CHOH &#x2003;&#x2003;(1)

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Hsinchu, Taiwan

Taining Hung