Title:
OPTICAL DATA CARRIER WHOSE INFORMATION LAYER CONTAINS A LIGHT-ABSORBING COMPOUND HAVING A NUMBER OF CHROMOPHORIC CENTERS
Document Type and Number:
WIPO Patent Application WO2002086878
Kind Code:
A3
Abstract:
The invention relates to an optical data carrier containing a preferably transparent substrate that is optionally already coated with a reflecting layer. An information layer, which can be written with light, optionally, a reflecting layer and, optionally, a protective layer or another substrate or a covering layer are applied to the surface of the preferably transparent substrate. The optical data carrier can be written and read with blue, red or infrared light, preferably with laser light, whereby the information layer contains a light-absorbing compound and, optionally, a binding agent. The optical data carrier is characterized in that the light-absorbing compound comprises at least two identical or different chromophoric centers, and at least an absorption maximum ranging from 340 to 820 nm.
Inventors:
BERNETH HORST (DE)
BIERINGER THOMAS (DE)
BRUDER FRIEDRICH-KARL (DE)
HAGEN RAINER (DE)
HASSENRUECK KARIN (DE)
KOSTROMINE SERGUEI (DE)
OSER RAFAEL (DE)
BIERINGER THOMAS (DE)
BRUDER FRIEDRICH-KARL (DE)
HAGEN RAINER (DE)
HASSENRUECK KARIN (DE)
KOSTROMINE SERGUEI (DE)
OSER RAFAEL (DE)
Application Number:
PCT/EP2002/003071
Publication Date:
February 27, 2003
Filing Date:
March 20, 2002
Export Citation:
Assignee:
BAYER AG (DE)
BERNETH HORST (DE)
BIERINGER THOMAS (DE)
BRUDER FRIEDRICH-KARL (DE)
HAGEN RAINER (DE)
HASSENRUECK KARIN (DE)
KOSTROMINE SERGUEI (DE)
OSER RAFAEL (DE)
BERNETH HORST (DE)
BIERINGER THOMAS (DE)
BRUDER FRIEDRICH-KARL (DE)
HAGEN RAINER (DE)
HASSENRUECK KARIN (DE)
KOSTROMINE SERGUEI (DE)
OSER RAFAEL (DE)
International Classes:
B41M5/26; C07D217/14; C07D221/04; C07D311/12; C07D311/80; C07D455/04; C07D491/04; C07F15/06; C09B23/01; C09B23/04; C09B23/10; C09B29/00; C09B29/036; C09B29/36; C09B44/10; C09B47/04; C09B47/08; C09B47/26; C09K9/02; G11B7/0045; G11B7/24; G11B7/244; G11B7/247; G11B7/248; G11B7/249; G11B7/254; G11B7/26; G11B7/007; (IPC1-7): G11B7/24; C09B69/10
Domestic Patent References:
| WO1998012559A1 | 1998-03-26 | |||
| WO2000074944A1 | 2000-12-14 | |||
| WO1997044365A1 | 1997-11-27 |
Foreign References:
| EP0750020A2 | 1996-12-27 | |||
| EP0750019A2 | 1996-12-27 | |||
| US4605607A | 1986-08-12 | |||
| US4680375A | 1987-07-14 | |||
| US4501876A | 1985-02-26 | |||
| EP0774495A1 | 1997-05-21 | |||
| US4581317A | 1986-04-08 | |||
| US4666819A | 1987-05-19 | |||
| US4948715A | 1990-08-14 | |||
| US5776656A | 1998-07-07 | |||
| GB1316288A | 1973-05-09 |
Other References:
TDK CORP: "Optical Recording Medium - composed of support carrying polymerized cyanine dye as light absorbing material", WPI WORLD PATENT INFORMATION DERWENT, DERWENT, GB, VOL. 6, NR. 85, XP002092951
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 06 22 September 2000 (2000-09-22)
PATENT ABSTRACTS OF JAPAN vol. 008, no. 166 (M - 314) 2 August 1984 (1984-08-02)
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 06 22 September 2000 (2000-09-22)
PATENT ABSTRACTS OF JAPAN vol. 008, no. 166 (M - 314) 2 August 1984 (1984-08-02)
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