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Grain wrote:I check bonding not overly scientifically, bend them till they break. In my tests, about 20 discs, various TY media codes, they've all bent to touching without the two sides seperating. Odd time they'll break before touching, about 10%, but I don't expect them to bend that much in normal use .
ItalianJob wrote:My Plextor (YUDEN T03) DVD+R 16X in 50 spindle are not impressive, they give me a 97 score with quality test on Nero CD-DVD Speed (using two burners : BenQ 1620 and LG 4166).
Lately I burn a Plextor DVD-R 8X (TYG02) on my old 1620 @ 12X and it gives me an oustanding 99 score with a very low level of total PIF.
This is the result of the cost war... Sad to see new generation of product less attractive than old one.
MCC004 are sometimes poor too... No more absolut references
ItalianJob wrote:You're complaining about a 97? People take those CD Speed scores way too seriously. Far more important that the score is the max and average PIE and PIF.
dolphinius_rex wrote:Grain wrote:How is that supposed to test for bonding???
Halc wrote:Prelim data:
Yuden000 T03 16x DVD-R (authentic, straight from TY): less than optimal burning results at 16x (burn with LG/Nec/BenQ drives, scan with LiteOn/Plextor/Nec/BenQ drives). Less than optimal aging (raised humidity and temp in aging acceleration chamber).
YUDEN000 T02 DVD+R 8x (Fujifilm, jc, authentic, bought a year ago). Quite good results (LG/Nec/BenQ burners, LiteOn/Plextor/Nec/BenQ scanners) - only some PIF peaks towards the end of the disc (and LG has no idea how to burn these). Excellent aging results (almost no signs of aging).
Haven't tested UV/pH stress.
I'm personally very disappointed with their 16x -R media overall (compatibility, aging) when compared to their 8x +R media.
Frank1 wrote:Posted: Sun Apr 23, 2006 2:37 am Post subject:
--------------------------------------------------------------------------------
To get genuine Taiyo Yuden I buy now them under the Panasonic brand
because:
- they are easy to pick up at my local shop
- I never spotted any fakes among the Panasonic brand.
Grain wrote:I check bonding not overly scientifically, bend them till they break. In my tests, about 20 discs, various TY media codes, they've all bent to touching without the two sides seperating. Odd time they'll break before touching, about 10%, but I don't expect them to bend that much in normal use .
Grain wrote:dolphinius_rex wrote:Prodisc's media sold under Fuji brand has been ok for me so far.
I've had similar luck, with my bending test, Fuji/Prodiscs take the most effort to seperate &/or shatter.
dolphinius_rex wrote:I still have a lot of doubt that bending the disc is a positive test for anything, other then the malleability of the plastic used.
Grain wrote:dolphinius_rex wrote:I still have a lot of doubt that bending the disc is a positive test for anything, other then the malleability of the plastic used.
Perhaps you have a more violent vision of how I'm going about this than actually is happening. Hold a disc by it's edges with one hand, then slowly bend opposite ends towards each other. You are exerting extreme stress on the bonding material as you are forcing one part/side of the disc to bend disproportionately to the other, putting all the stress on the bonding itself to keep those 2 sides together. Basically an extreme test version of pulling a disc from a poor case. The fact it brakes is just continuing the test's to 100% failure.
dolphinius_rex wrote:But the stress you're applying to the disc will be essentially a horizontal stress won't it?
dolphinius_rex wrote:As opposed to trying to pull the layers apart, you are almost forcing them to attempt to slide apart. I would imagine it would be MUCH more difficult for even a poorly bonded disc to slide apart.
Grain wrote:IMO both methods of testing are inflicting abuse not seen in "normal" every day use, but both give relevant insight into a discs bonded strength.
Grain wrote:Correct. What I'm doing is even more severe than a worst case scenario of every day handling, where the most harshest test a disc may face is removal from those crap cases.
dolphinius_rex wrote:The whole middle scale is completely ignored in the case of your testing method (and also LiteON scanning ).
Grain wrote:dolphinius_rex wrote:The whole middle scale is completely ignored in the case of your testing method (and also LiteON scanning ).
I certainly hope that your not trying to discredit my tests strictly because I've not telling you what you want to hear. There's no value in conducting questionaires if you've already written the conclusion. ie Trying to discredit my comments to your query is starting to sound like you have a personal issue with Taiyo Yuden, and are only interested in negative feedback to support your gripe.
00000000 00 6C 00 00 01 40 C1 FD 9E D8 52 00 02 84 0D 11 .l...@....R.....
00000010 66 78 90 00 03 54 59 47 30 33 00 00 04 00 00 00 fx...TYG03......
00000020 00 00 00 00 05 A8 82 00 20 00 02 00 06 09 09 15 ........ .......
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