DVD-R Scratch-proof test.
Confirmation / conparison of "Hard coat" -like DURABIS- disk.
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|Recently, a lot of DVD-R disks with hard coat are put on the market.
The little child will damages disks by carelessly touching. So, we are helped very much by hard coat.
Then, now I test which "hard coated disk" is most excellent?
. At first, burn disks with pioneer DVR-A12, and scan PI/PIF rate with pxscan,
. Put the disk(face recording side to the ground) on the finest sandpaper, put a weight on the disk, and drag the disk horizontally.
. Scan PI/PIF rate again. Next, repeat  process with more heavy weight.
(DVD-R has the rib in the inner. Sandpapers are set to avoid it.)
... SANKO producing Co,ltd. - Gardening saucer A-4 + various weight.
・Sandpapers(water-proof, and taugh to wear.)
... SANKYO RIKAGAKU Co.ltd sandpaper "FUJI STAR" DCCS #2000 (made in Japan)
. TDK DVD-R Durabis 8x (made in Luxembourg)
. TDK DVD-R Durabis 16x (made by TaiyoYuden)
. SONY "OnSho"[means Sound-master] DVD-R 16x
. maxell High-Grade DVD-R 8x
. Verbatim UltraLife GOLD DVD-R 8x (Gold/Silver hybrid reflection layer + Prodisc hard coat)
. Imation "ForceField" DVD-R 8x
. UNIFINO "Super Strong" DVD-R 8x
. MORI DVD-R PRO.MASTER
. TaiyoYuden That's DVD-R 16x (non-hardcoat - normal disk)
. GigaStorage DVD-R 8x (non-hardcoat - normal disk)
.RICOH DVD+R 16x (non-hardcoat - normal disk)
SANKO producing Co,ltd. - Gardening saucer A-4.
Gardening saucer + various weights on the disk.