Optical recording article
View Patent ↗Optical recording articles, such as tapes, and methods of making and using such articles are disclosed.
1. An optical phase change tape, comprising, in this order:
a substrate comprising a polyaramid material;
a first heat absorbing layer comprising zinc sulfide and silicon oxide;
an optical recording layer comprising germanium, antimony, and tellurium; and
a second heat absorbing layer comprising zinc sulfide and silicon oxide,
wherein the optical recording layer is Ge 1 Sb 1 Te 1.3 .
2. The optical phase change tape of claim 1 , wherein the optical recording layer is about 20 nanometers thick.
3. The optical phase change tape of claim 1 , wherein the substrate is about 4.4 microns thick.
4. The optical phase change tape of claim 1 , further comprising a reflective layer disposed between the substrate and the first heat absorbing layer, wherein the reflective layer is about 40 nanometers thick.
5. The optical phase change tape of claim 1 , wherein the first heat absorbing layer is about 20 nanometers thick.
6. The optical phase change tape of claim 1 , wherein the second heat absorbing layer is about 80 nanometers thick.
7. The optical phase change tape of claim 1 , wherein the optical recording layer is about 80 nanometers thick.
8. The optical phase change tape of claim 1 , wherein the substrate is about 5.2 microns thick.
9. The optical phase change tape of claim 1 , wherein the substrate comprises a polyethylene naphthalate material.
10. An optical phase change tape, comprising, in this order:
a substrate comprising a polyaramid material;
a first heat absorbing layer comprising zinc sulfide and silicon oxide;
an optical recording layer comprising germanium, antimony, and tellurium; and
a second heat absorbing layer comprising zinc sulfide and silicon oxide,
wherein the optical recording layer is Ge 1 Sb 1 Te 2.3 .
11. The optical phase change tape of claim 10 , wherein the optical recording layer is about 50 nanometers thick.
12. The optical phase change tape of claim 10 , further comprising a reflective layer disposed between the substrate and the first heat absorbing layer.
13. The optical phase change tape of claim 12 , wherein the reflective layer comprises aluminum and titanium.