Global Patent Index - EP 1023724 A1

EP 1023724 A1 2000-08-02 - OPTIC STORAGE MEDIUM

Title (en)

OPTIC STORAGE MEDIUM

Title (de)

OPTISCHES SPEICHERMEDIUM

Title (fr)

MEMOIRE OPTIQUE

Publication

EP 1023724 A1 (DE)

Application

EP 98952645 A

Priority

  • DE 19744162 A
  • EP 9806100 W

Abstract (en)

[origin: DE19744162A1] Writable optical storage medium has a base layer containing dye(s) and has >= 70% transmission for the laser wavelength used for writing and/or read-out and >= 70% absorption at all other visible light wavelengths >= 100 nm shorter than the laser light wavelength. In a writable optical storage medium, consisting of a protective film, writable layer(s), optionally a light-reflecting film and base layer(s), the base layer contains dye(s) and has >= 70% transmission for the laser wavelength used for writing and/or read-out and >= 70% absorption at all other visible light wavelengths >= 100 nm shorter than the laser light wavelength.

IPC 1-7 (main, further and additional classification)

G11B 7/24

IPC 8 full level (invention and additional information)

G11B 7/24 (2013.01); G11B 7/253 (2013.01); G11B 7/246 (2006.01); G11B 7/2463 (2013.01); G11B 7/2467 (2013.01); G11B 7/247 (2006.01); G11B 7/2472 (2013.01); G11B 7/2475 (2013.01); G11B 7/2533 (2013.01); G11B 7/2534 (2013.01); G11B 7/2535 (2013.01); G11B 7/2538 (2013.01); G11B 7/254 (2006.01); G11B 7/2542 (2013.01); G11B 7/258 (2013.01); G11B 7/2585 (2013.01); G11B 7/259 (2013.01); G11B 7/2595 (2013.01)

CPC (invention and additional information)

G11B 7/253 (2013.01); G11B 7/24 (2013.01); G11B 7/2463 (2013.01); G11B 7/2467 (2013.01); G11B 7/2472 (2013.01); G11B 7/2475 (2013.01); G11B 7/248 (2013.01); G11B 7/2533 (2013.01); G11B 7/2534 (2013.01); G11B 7/2535 (2013.01); G11B 7/2538 (2013.01); G11B 7/2542 (2013.01); G11B 7/258 (2013.01); G11B 7/2585 (2013.01); G11B 7/259 (2013.01); G11B 7/2595 (2013.01)

Designated contracting state (EPC)

BE DE DK ES FR GB IT NL SE

EPO simple patent family

DE 19744162 A1 19990408; AU 1026699 A 19990427; BR 9812868 A 20000808; CA 2305147 A1 19990415; CN 1273666 A 20001115; EP 1023724 A1 20000802; IL 134872 D0 20010520; JP 2001519581 A 20011023; KR 20010024430 A 20010326; NO 20001746 A 20000405; NO 20001746 D0 20000405; TW 464855 B 20011121; WO 9918571 A1 19990415

INPADOC legal status


2003-10-08 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030403

2002-01-30 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20011217

2000-08-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000508

2000-08-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE DK ES FR GB IT NL SE