Archival ISO Grade Recordable Media
JVC Archival media technical information
Used by permission
Fact 1: Why is JVC's Silver Alloy solution better?
Fact 1: Why is JVCs Silver Alloy solution better?
JVC Archival Grade DVD-R utilizes our proprietary "silver alloy" solution, which has a better reflectivity and a lower error rate as compared to gold discs. And, did you know most drives are designed and developed for silver based media? Yes, it is true gold does not oxidize, however, it is important to note, that generally gold has reflectivity lower than silver.
(*)Low reflectivity may trigger a higher error rate and it follows that discs with a high error rate can be affected by external conditions more easily.
(*)The reflectivity rate (Rg) of JVC Archival Grade DVD-R is higher than 45%. This percentage is standardized per the book specification. Our research shows that the reflectivity rate of some gold discs is lower than 40%, which means a higher possibility of initial errors.
Archival lifetime could be affected by the storage capability of DVD-R. It goes without saying that rigorous specifications for the electrical and mechanical characteristics of the DVD-R are important, but the raw materials used for the DVD-R, such as reflective layer and organic dye, are also vital.
Our Archival Grade DVD-R employs a uniquely devel-oped "special alloy" on the silver based reflective layer to maintain suitable reflectivity so that long-term storage capability can coexist.
Employing JVCs unique technologies into a disc.
Employing our uniquely developed silver-alloy*2 in the reflective layer to prevent deterioration of the reflective layer*1.
The properties of metal particles are less likely to change during
long-term archiving. By minimizing deterioration in the reflective layer
with time, stable playback can be maintained for a very long time.
*1 Reflective layer
*2 Silver alloy
Hard-coat recording surface that is scratch-, stain-, and dust-resistant
Exclusive production line ⇒ clean management
Victor Advanced Media is the only manufacturer who can control all aspects of its manufacturing. Our Archival Grade DVD-R is manufactured, even after the acquisition of ISO certification, by exclusive production lines and quality standards are set at the highest level. Our commitment is to minimize the fluctuation of the products and to meet your strict storage needs.
[Fully automated production lines, manufactured only in Japan]
Furthermore, stress/acceleration tests are carried out to each lot to ensure the durability and reliability is high enough for "Archival Grade".
[Acceleration test to each lot]
Fact 2: What should you know about organic dye decomposition?
When an organic dye decomposes,signal (data) cannot be read back. The reflective layer is not the only important factor for long term archiving! Our research has shown that gold discs we purchased from the market employ the same organic dye as standard silver discs. For JVC Archival Grade DVD-R an organic dye with specially in-house developed additives is used. This minimizes decomposition of the organic dye and achieves higher archive capability.
Fact 3: How should you define longevity of optical media?
The test method to estimate optical media longevity varies depending on the manufacturer. Each individual company estimates the longevity based on their own test methods and there are claims in the market for 50, 100 and even 300 years of longevity! How reliable is this number?The past practice dictates the ordinary test method to be a test of the discs under a shocking condition (normally 80C/80%humidity) then the time until error rate exceeds 280 is measured to estimate the longevity. This test method is not practical and does not accurately estimate the longevity at ambient condition (25C/50% humidity), which is a critical point that needs to be known. In order to obtain a reliable estimation the test has to be done with multiple samples and in multiple conditions. Each result should be statistically processed.
Ordinary Test vs. ISO/IEC10995 Test
* Test condition previously performed.
The JVC Archival Grade DVD-R passed ISO/IEC 10995. This is the only standard in the world that defines the test method of estimating longevity of DVD-R and is a very reliable and stringent test method.
What is ISO/IEC10995?
Reference number: ISO/IEC10995:2008(E)
Information technology-Digitally Recorded media for information Interchange and storage Test method For the estimation of the archival lifetime of optical media.
Down time is measured at 85C/85%, 85C/70%, 75C/75%, 65C/85%, and the estimated average life is the point where the approximated curve coincides with 25C/50%.
Down time: time when 280 PI errors are reached
Life Expectancy and Average Down Time of Optical Disc
The ISO/IEC10995 defines the life expectancy of an optical disc as the point of 5% failure rate (95% uptime rate).
Disc products with a life expectancy of 30 years or longer are certified by ADTC.In short,
(1) Calculation of estimated life based on 25C and 50% RH (simplified into a 2-dimensional graph)
Accelerated aging time under the different temperature/humidity environments are processed statistically to calculate the distribution of the estimated life based on 25C and 50% RH.
Distribution of Estimated Life Based on 25C and 50% RH ISO/IEC 10995
Fact 4: How should you measure quality in archival grade DVD-Rs?
The JVC Archival Grade DVD-R is manufactured only in Japan. The exclusive production and strict Quality Control used ensure quality and reliability on a consistent basis. Each lot is tested and passes stress/acceleration testing to ensure the archival capability and consistency of the product.
Specially Tuned up Drives and Error Checker
Manufactured by TEAC
Manufactured by TEAC