Title:
METHOD FOR MAKING HIGHLY COLORED DVDs
Document Type and Number:
WIPO Patent Application WO2005043526
Kind Code:
A3
Abstract:
Embodiments of highly colored optical discs and methods for making the same are disclosed. For examples, specification discloses a DVD composition that comprises a bonding layer and a data layer disposed there between, wherein at least one of the substrates is a read side substrate comprising a highly colored polycarbonate comprising an optical quality polycarbonate resin and a colorant formulation in the range of 0.l to 0.4 wt % of the highly colored polycarbonate. The range of metal impwities from the colorant formulation is specified.
Inventors:
PAI-PARANJAPE VANDITA (US)
SCHOTTLAND PHILIPPE (US)
THOMAS VERGHESE (US)
SCHOTTLAND PHILIPPE (US)
THOMAS VERGHESE (US)
Application Number:
PCT/US2004/033509
Publication Date:
July 14, 2005
Filing Date:
October 12, 2004
Export Citation:
Assignee:
GEN ELECTRIC (US)
PAI-PARANJAPE VANDITA (US)
SCHOTTLAND PHILIPPE (US)
THOMAS VERGHESE (US)
PAI-PARANJAPE VANDITA (US)
SCHOTTLAND PHILIPPE (US)
THOMAS VERGHESE (US)
International Classes:
G11B7/26; G11B7/253; G11B7/258; (IPC1-7): G11B7/26; G11B7/24
Foreign References:
| EP1236758A1 | 2002-09-04 | |||
| US6475589B1 | 2002-11-05 | |||
| EP0737965A1 | 1996-10-16 |
Other References:
See also references of EP 1683145A2
Download PDF: