Who discovered the Blu-ray Disc, Blu-ray materials, and other questions?

[gkpandi]

Hi friends,

Please tell me,

Who was Discovered the Blu-Ray Disc?
What is the architecture of it?

Thank You

[neos_peace]

um if yo click on the links on the main page of this site and click on faqs or the other one you'll get your questions answered wihotu making a thread.
https://www.blu-ray.com/faq/ <-----try this link.
Welcome to the site. Try using the search function and browse you'll find a lot of topics already been discussed.

[monica.stefan]

Hello,
I was wondering what the blu-ray discs are made out of?
What other materials are there besides polycarbonate?
Thanks.

[TNTbkNY]

ill be nice...

1) Welcome to the forums!!!

2) We actually have a Q/A section just for new kidz on da block like yourself here.

3) And this is probably the best answer to you questionHowStuffWorks.

[neos_peace]

Welcome to the forum. Like TNT said those links are your best bet.

[stefan.h]

what are blu ray disc made out of? .. besides polycarbonate
also, can't find any useful links on the production of blu-ray disc, any help?

[jw]

Here are the FAQs from the patent office:

Abstract:


Provided are: a molding material for a Blu-ray Disc substrate or an HD DVD substrates which is reduced in the occurrence of appearance failures and can realize a stable yield; and a method of producing the molding material. The molding material for a Blu-ray Disc substrate or an HD DVD substrate includes: an aromatic PC resin produced by an interfacial method (A); 150 to 350 ppm (in terms of mass ppm of a total amount of the molding material, the same applies hereinafter) of fatty acid monoglyceride having 14 to 30 carbon atoms (B); 10 to 150 ppm of PETS (C); and 30 to 120 ppm of antioxidant (D). The method of producing the molding material includes: introducing the component (A) into an extruder together with, with respect to the amount of the component (A), 150 to 350 ppm of fatty acid monoglyceride having 14 to 30 carbon atoms (B), 10 to 150 ppm of PETS (C), 30 to 120 ppm of antioxidant (D), and 500 to 1,000 ppm of water (E) having an electrical conductivity of 1 μS/cm or less at 25° C., each amount being ppm of the ingredient (A) such that the water content of the PC resin in the extruder is adjusted to 500 to 1,300 ppm; producing a strand from the mixture by melt extrusion molding; cooling the strand; and cutting the strand into pellets.Claims:


1: A molding material for a Blu-ray Disc substrate, comprising:an aromatic polycarbonate resin produced by an interfacial method (A);150 to 350 mass ppm of fatty acid monoglyceride having 14 to 30 carbon atoms (B) with respect to a total amount of the molding material;10 to 150 mass ppm of pentaerythritol fatty acid full ester (C) with respect to the total amount of the molding material; and30 to 120 mass ppm of an antioxidant (D) with respect to the total amount of the molding material.

2: A molding material for a Blu-ray Disc substrate according to claim 1, wherein a viscosity average molecular weight (Mv) of the aromatic polycarbonate resin produced by the interfacial method (A) is 14,000 to 17,000.

3: A molding material for a Blu-ray Disc substrate according to claim 1, wherein the pentaerythritol fatty acid full ester (C) comprises pentaerythritol palmitic acid full ester and/or pentaerythritol stearic acid full ester.

4: A method of producing a molding material for a Blu-ray Disc substrate, comprising:introducing an aromatic polycarbonate resin produced by an interfacial method (A) into an extruder together with, with respect to the amount of the component (A), 170 to 380 mass ppm of fatty acid monoglyceride having 14 to 30 carbon atoms (B), 30 to 180 mass ppm of pentaerythritol fatty acid full ester (C), 30 to 120 mass ppm of an antioxidant (D), and 500 to 1,000 mass ppm of water (E) having an electrical conductivity of 1 μS/cm or less at 25.degree. C. such that a water content of the polycarbonate resin in the extruder is adjusted to 500 to 1,300 mass ppm;producing a strand from the mixture by melt extrusion molding;cooling the strand; andcutting the strand into pellets.

5: A Blue-ray Disc substrate, formed by injection molding the molding material according to claim 1.

6: A molding material for an HD Digital Versatile Disc substrate, comprising:an aromatic polycarbonate resin produced by an interfacial method (A);150 to 350 mass ppm of fatty acid monoglyceride having 14 to 30 carbon atoms (B) with respect to a total amount of the molding material;10 to 150 mass ppm of pentaerythritol fatty acid full ester (C) with respect to the total amount of the molding material; and30 to 120 mass ppm of an antioxidant (D) with respect to the total amount of the molding material.

7: A molding material for an HD Digital Versatile Disc substrate according to claim 6, wherein a viscosity average molecular weight (Mv) of the aromatic polycarbonate resin produced by the interfacial method (A) is 14,000 to 17,000.

8: A molding material for an HD Digital Versatile Disc substrate according to claim 6, wherein the pentaerythritol fatty acid full ester (C) comprises pentaerythritol palmitic acid full ester and/or pentaerythritol stearic acid full ester.

9: A method of producing a molding material for an HD Digital Versatile Disc substrate, comprising:introducing an aromatic polycarbonate resin produced by an interfacial method (A) into an extruder together with, with respect to the amount of the component (A), 170 to 380 mass ppm of fatty acid monoglyceride having 14 to 30 carbon atoms (B), 30 to 180 mass ppm of pentaerythritol fatty acid full ester (C), 30 to 120 mass ppm of an antioxidant (D), and 500 to 1,000 mass ppm of water (E) having an electrical conductivity of 1 μS/cm or less at 25.degree. C. such that a water content of the polycarbonate resin in the extruder is adjusted to 500 to 1,300 mass ppm;producing a strand from the mixture by melt extrusion molding;cooling the strand; andcutting the strand into pellets.

10: An HD Digital Versatile Disc substrate, formed by injection molding the molding material according to claim 6.

Also from WIKIPEDIA about the scratch resistant surface

Since the Blu-ray Disc data layer is closer to the surface of the disc, compared to the DVD standard, it was at first more vulnerable to scratches.[10] The first discs were housed in cartridges for protection.
TDK was the first company to develop a working scratch protection coating for Blu-ray Discs. It was named Durabis. In addition, both Sony and Panasonic's replication methods include proprietary hard-coat technologies. Sony's rewritable media are spin-coated with a scratch-resistant and antistatic coating. Verbatim's recordable and rewritable Blu-ray Discs use their own proprietary hard-coat technology called ScratchGuard.

[quexos]

Wow JW dude that's some thorough answer

[fronk777]

Al Gore discovered the blu-ray.

[Blu Titan]

Originally Posted by fronk777

Al Gore discovered the blu-ray.

[dolphinc]

I think Vin Diesel discovered the Blu Ray disc in 1992.

[Grevlin]

Originally Posted by dolphinc

I think Vin Diesel discovered the Blu Ray disc in 1992.

It was a joint research project between Vin and Al Gore. Everyone knows that.

[dolphinc]

Originally Posted by Grevlin

It was a joint research project between Vin and Al Gore. Everyone knows that.

That could be the next "Odd Couple" movie.

[JJ]

Discovered it?

lol. De Soto did.

[Grevlin]

Originally Posted by JJxiv1215

Discovered it?

lol. De Soto did.

JJ! Where ya been bud?

[JJ]

Originally Posted by Grevlin

JJ! Where ya been bud?

I know, I've rarely been on lately. Just watching movies now and laying back and enjoying my stuff, my womens, my sammiches. I should start participating again, though. I think I've made like, 10 posts in the last 2 weeks, lol.

[hardcorefrokid]

This guys first post and most likely his last.

[ijokr]

wasn't it big daddy who discovered it?

[JJ]

^----BEST sig EVER

[Grevlin]

Originally Posted by ijokr

wasn't it big daddy who discovered it?

I wouldn't be surprised. Big D may have invented it just to improve the material going to his speakers

Go Big D!