Recorders – Record receivers and/or driving means therefor – Laminated – impregnated – or coated bases
Patent
1981-10-15
1984-02-28
Griffin, Donald A.
Recorders
Record receivers and/or driving means therefor
Laminated, impregnated, or coated bases
427 531, G01G 1534, G01D 1510
Patent
active
044344295
ABSTRACT:
An information recording member comprising a substrate, and a thin film formed on the substrate with or without an intermediate layer therebetween and irradiated with a recording beam to make an aperture or recess in the thin film, is disclosed in which the thin film is a crystalline film and has a composition expressed by a general formula Se.sub.x Te.sub.y M.sub.z, where x, y and z are given by formulae 0.02.ltoreq.x.ltoreq. 0.35, 0.50.ltoreq.y.ltoreq.0.98 and 0.ltoreq.z.ltoreq.0.45, respectively, and M indicates at least one element selected from the group consisting of As, Sb, Bi, S, Si, Ge, Sn, Pb, Al, Ga, In, Tl, Zn, Cd, Au, Ag, Cu, Ni, Pd, Rh, Cr, Mo, W and Ta, and in which the thin film does not deteriorate to such an extent as seen in conventional recording films when a time has elasped, since the thin film is crystalline.
REFERENCES:
patent: 3132584 (1964-05-01), Dalton
patent: 3560994 (1971-02-01), Wolff et al.
patent: 3889272 (1975-06-01), Lou et al.
patent: 4214249 (1980-07-01), Kasai et al.
patent: 4322839 (1982-03-01), Yamashita et al.
patent: 4348461 (1982-09-01), Terao et al.
Horigome Shinkichi
Mitsuya Munehisa
Ota Sakae
Shigematsu Kazuo
Terao Motoyasu
Griffin Donald A.
Hitachi , Ltd.
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