I am packing and ripping my old games. Hundreds of discs.
PCE CD games - cd is flawless. These discs date to 1992?
Sega CD- same discs is flawless
Psone. Oh. My. God.
Any fingerprints / skin oil left on the discs? Even if "clean" looking
when stored? Even trace oil? HEAVILY oxidize the disc surface.
Does NOT buff out or come off, it is a change in the disc surface.
This is a big big problem.
The bottom of psone games, for some reason are vulnerable to corrosion!
Last edited by ASSEMbler; 07-13-2011 at 02:27 PM.
Yes I have few that are warped around the edges, ps1 discs also scratch very easily my WWF Attitude disc has a very slight scratch to it and it won't load the intro str on the weaker ps1 laser but reads fine on my ps2.
Last edited by KH2K4; 07-13-2011 at 02:36 PM.
Are you talking about the top of the disks? because I don't see how the bottom can be oxidized from finger prints/oils?
Unless you just mean the bottom surface has been attacked from oils/etc? which would make more sense than oxidization from finger prints.
Its usually the reflective layer (metal) that gets oxidized, not the plastics
edit:
Just noticed you say corrosion later on, which makes more sense to me at least.
Is the plastic cloudy and is it just where the finger prints were?
Photos would be interesting?
I own about 300? psone discs. I bought many of them used for just archiving.
Picture 1 is of a cleaned and archived disc.
Pictures 2 onward are of an uncleaned, archived as bought disc which has dirt
and fingerprints.
Last pictures show the permanent fingerprints oxidized into the disc.
Clean disc, cleaned when archived.
Uncleaned
Cleaned
Cleaned with permanent finger marks oxidized in the disc.
I just read the other day that removal of fingerprint "data" is not 100% impossible from metallic surfaces due to minute changes in surface composition. Bunch of ionic level changes that allow you to detect fingerprint "data" after the surface has been cleaned.
Wouldn't be surprised if the composition change from transparent to black wouldn't eventually cause some problems. My Chrono Cross disc 1 has a ring scratch from a bloody SCPH-5501 and it has so angered me. This would be infuriating.
http://www.assemblergames.com/forums...ad.php?t=31524
My feedback thread, since it seems somewhat difficult for people to find.
engineered to break down.
Originally Posted by APE
well what this is is an oxidation of the black scratch proofing, I doubt the media is going to go bad as the disc play, it just looks like shit is all.
That is what I figured, good way to ruin resale value but at least its not as bad as LaserDisc laser rot.
Anyone know what makes the disc black? Wonder if it can be chemically altered over time.
http://www.assemblergames.com/forums...ad.php?t=31524
My feedback thread, since it seems somewhat difficult for people to find.
Last edited by ASSEMbler; 07-13-2011 at 03:48 PM.
The narrator states that "black ink is added" which unfortunately leads me to come up with the mental image of someone squirting a fountain pen into a batch of molten plastic. They show a handful of the transparent plastic that they melt to make the disc and then show a disc having some transparent viscous fluid being applied to the top. The inner hub is clearly a black plastic but the reflective metal layer is also clearly visible.
Unless they skipped the step for adding black in the video as per being a company secret or something. The narrator did say the black was to help prevent illegal copies from being made but I don't think I've ever heard that one before.
Given CD tech was pretty much mature by the time the Playstation came along I would place my bet on whatever Sony added to make the discs black (or allow the plastic to accept the coloring agent) is what caused the oxidation. Never have I seen a CD come out like that before, even the copy of MYST I've had since 1994 or so and abused heavily as a youngling. Looks like I tried to buff it with 80 grit sand paper but nothing like what your PS1 disc looks like.
Time to scour some patents for information.
http://www.assemblergames.com/forums...ad.php?t=31524
My feedback thread, since it seems somewhat difficult for people to find.
I have a number discs that have clouded. Some are obliviously because of fingerprints I stupidly left but others have no apparent reason. I think the black color just fades over time for some reason and anything like fingerprints, dust particles, ect simply exacerbates it.
On the plus side it doesn't seem to affect them from playing since every game I've tested still plays just fine.
Well, it's rather brutal here. Right now we are advising all our clients to put everything they've got into canned food and shotguns.
I thought they where black to reduce reflection due to the poor quality lasers :shrug: the reason why backups on none black cd-r tend to skip on large videos.
Well from a collector's point of view this is a nightmare.
No, that's a myth that was introduced by SONY to try and discourage people from modding their machines and playing bent CD-R's. You have to bear in mind that the PlayStation because it used CD based media was often used by some as a standalone CD player, a laser that destroyed itself for playing anything other than black discs would have led to more class action suits than you could point a shitty stick at.
As for skippy FMV, shit media burnt at maximum speed is the problem there. I raped the living shit out of my first PSX for 3 years solid with either official discs, 'golds' or VCD's and she never once skipped a beat, in fact she was better than my Saturn which was meant to play VCD's.
Makes me glad that projects like redump.org exists. At the very least the game data can be saved (in cases where the actual disc can be endangered). But I can see this definitely sucking for collectors unless you some how have collected everything sealed.
sad but not overly surprising
Can you not just get it resurfaced?
Enter The Code: IAMAGEEK on our Amazon Store at the Checkout at get 5% Off ;)
Sure I could, but resurfacing removes media from the disc and who is
to say they whole thing won't oxidize as a result down the road?
Resurfaced looks even worse. I've got 1 or 2 resurfaced PS1 games and I will have to replace them someday because it's looks shitty.
By the way, I couldn't help laughing at the narrator of the PlayStation video at 1:07:
"Black ink is added to the plastic to give the CD its distinctive cool, PlayStation only look. This also helps protect the CD from illegal copies."
Lol
<- can someone please make this as a repro and sell it so me?
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