Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1996-07-26
1998-07-07
McPherson, John A.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
43027015, 43027016, 4302702, 43027021, 430945, G11B 724
Patent
active
057766568
ABSTRACT:
The invention provides an optical recording medium comprising at least two recording layers containing a dye. At least two layers of the recording layers have different optical constants, and at least one among these recording layers having different optical constants contains a dye which forms a thin film having an absorption spectrum whose half-value width is up to 170 nm. This construction permits the medium to be written and read in a conventional wavelength range of about 780 nm and a shorter wavelength range of about 630-680 nm.
REFERENCES:
patent: 4767696 (1988-08-01), Ishimoto et al.
patent: 5633106 (1997-05-01), Aihara et al.
Kitagawa Sumiko
Monden Atsushi
Namba Kenryo
Shinkai Masahiro
Suzuki Takahiko
McPherson John A.
TDK Corporation
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