Fast-writable and precision-writable high-capacity optical...

Details Fast-writable and precision-writable high-capacity optical... Fast-writable and precision-writable high-capacity optical...

2005-02-01

2005-02-01

Mulvaney, Elizabeth (Department: 1774)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064400, C428S064800, C430S270140

Reexamination Certificate

active

06849315

ABSTRACT:
The invention relates to an optical recording medium, comprising a substrate and a recording layer, wherein the recording layer comprises a compound of formula (I), wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12and R13are each independently of the others hydrogen, G1or C1-C24alkyl, C2-C24alkenyl, C2-C24alkynyl, C3-C24cycloalkyl, C3-C24cycloalkenyl, C7-C24aralkyl, C6-C24aryl, C4-C12heteroaryl or C1-C12heterocycloalkyl, each unsubstituted or substituted by one or more identical or different substituents G1, wherein R1and R2, R1and R13, R2and R3, R3and R4, R4and R5, R5and R6, R6and R7, R7and R8, R8and R9, R9and R10, R10and R11, R11and R12and/or R12and R13can independently of one another be bonded to one another in pairs separately or, when they contain substitutable sites, via a direct bond or via a —CH2—, —O—, —S—, —NH— or —NC1-C24alkyl-bridge in such a manner that, together with the atoms and bonds indicated in formula (I), five- or six-membered, saturated, unsaturated or aromatic, unsubstituted or G1-substituted rings are formed, G1is any desired substituent,?xm-img id="CUSTOM-CHARACTER-00001" he="2.46mm" wi="1.44mm" file="US06849315-20050201-P00900.TIF" alt="custom character" img-content="character" img-format="tif" ?is an inorganic, organic organometallic anion, Yn+is a proton or a metal, ammonium or phosphonium cation, and m and n are each independently of the other a number from 1 to 5, and p and q are each independently of the other O or a number from 0.2 to 6, the ratio of p and q to one another, depending upon m and n and, as applicable, the number of charged G1, being such that in formula (I) there is no excess positive or negative charge. Generally the optical recording medium according to the invention additionally comprises a reflecting layer. The recording media according to the invention exhibit high sensitivity and good playback characteristics, especially at high recording and playback speeds. The light stability is also excellent.

REFERENCES:
patent: 3781711 (1973-12-01), Drexhage et al.
patent: 5301145 (1994-04-01), Inoue et al.
patent: 5846682 (1998-12-01), Murofushi et al.
patent: 5851621 (1998-12-01), Wolleb et al.
patent: 3322945 (1985-01-01), None
patent: 19919119 (2000-11-01), None
patent: 0295145 (1988-12-01), None
Patent Abstracts of Japan vol. 1998, No. 1, JP 09226250 (1997).
Chem. Abstract 102:115142 for DE 3322945 (1985).

Affiliated with

Also associated with

Rating

Fast-writable and precision-writable high-capacity optical... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fast-writable and precision-writable high-capacity optical..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast-writable and precision-writable high-capacity optical... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3493792