G - Physics – 11 – B
Patent
G - Physics
11
B
352/32.1
G11B 7/24 (2006.01) B41M 5/30 (2006.01) B41M 5/46 (2006.01) G11B 7/00 (2006.01) G11B 7/244 (2006.01) B41M 5/40 (2006.01)
Patent
CA 2009088
Features of the present invention are connected with an optical recording medium which comprises a substrate, a heat-senstive color-developing layer containing a basic dye and an organic developer, and a light-absorbing layer containing a near infrared absorbent, the aforesaid layers being superposed upon the substrate, a reflectance at the dominant wave length of a laser beam on the surface of the recording medium being from 15 to 65%; a method for recording by irradiating the optical recording medium with a laser beam condensed by a condenser having a focal length of 0.5 mm or more and a numerical aperture (N.A) of 0.1 to 0.5; and a device for use in the above-mentioned method.
Fukui Hiroshi
Nagai Tomoaki
Satake Toshimi
Sekine Akio
Yokoyama Miyuki
Fetherstonhaugh & Co.
Nippon Paper Industries Co. Ltd.
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