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 (2006.01); 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)

Citation (search report)

See references of WO 9918571A1

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2003-10-08 [18D] DEEMED TO BE WITHDRAWN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