G11B2007/24308

SINTERED COMPACT TARGET AND METHOD OF PRODUCING SINTERED COMPACT

A sintered compact target containing an element(s) (A) and an element(s) (B) as defined below is provided. The sintered compact target is free from pores having an average diameter of 1 m or more, and the number of micropores having an average diameter of less than 1 m existing in 40000 m.sup.2 of the target surface is 100 micropores or less. The element(s) (A) is one or more chalcogenide elements selected from S, Se, and Te, and the element(s) (B) is one or more Vb group elements selected from Bi, Sb, As, P, and N. The provided technology is able to eliminate the source of grain dropping or generation of nodules in the target during sputtering, and additionally inhibit the generation of particles.

Optical recording medium having a plurality of recording layers capable of suppressing off-track
09911451 · 2018-03-06 · ·

An optical recording medium includes a plurality of information signal layers on which information signals are to be optically recorded. Among the plurality of information signal layers, the information signal layer closest to the light-receiving surface has a reflectance of more than 4%.

OPTICAL RECORDING MEDIUM
20170011767 · 2017-01-12 ·

An optical recording medium includes a plurality of information signal layers on which information signals are to be optically recorded. Among the plurality of information signal layers, the information signal layer closest to the light-receiving surface has a reflectance of more than 4%.