DVD Printing corrupts data
in [Printers]
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From: N on 9 Jul 2008 07:18 I have a Canon MP970 and have printed on a number of CDs without problem. Recently I made copies of a data DVD then printed on the disks. When I attempted to install the software from the copy, the installation failed, early in the installation, stating that a file was corrupt. I have no idea just how much of the data is corrupt. I've tried this with three DVDs using the same software DVD and had the same problem. My next idea was to print the blank DVD then copy to it. That was succesful. Is it possible that the small metal DVD detector in the printer's disk tray is causing the corruption?
From: DanG on 9 Jul 2008 11:02 "N" <N(a)onyx.com> wrote in message news:48749ed4$0$7212$5a62ac22(a)per-qv1-newsreader-01.iinet.net.au... >I have a Canon MP970 and have printed on a number of CDs without problem. > > Recently I made copies of a data DVD then printed on the disks. When I > attempted to install the software from the copy, the installation failed, > early in the installation, stating that a file was corrupt. I have no > idea just how much of the data is corrupt. > > I've tried this with three DVDs using the same software DVD and had the > same problem. > > My next idea was to print the blank DVD then copy to it. That was > succesful. > > Is it possible that the small metal DVD detector in the printer's disk > tray is causing the corruption? Nope, not remotely possible. These are optical discs, so you would want to look for physical damage to the data side of the disc. One common problem that people have is caused by manually turning the discs in the disc tray before or after printing, causing scratches. There's nothing in the printing process that can effect the data in any way, it would have to be a handling issue. The Canon printers are the gentlest on discs of the main 3 brands. It's also true that many common brands of printable discs are pure shite, quality wise. So you could be looking at discs that are burned poorly to start with, and simply become unreadable as a result. Lower your burn speed one notch and see how it goes.
From: Arthur Entlich on 10 Jul 2008 06:22 I believe it is recommended, in general, that DVDs be printed to before burning data to them. I suspect that the printing process may damage the data in some manner, although I honestly don;t know what damage can be accomplished during the printing process, since DVDs have their light sensitive layer in the middle of the DVD disk, laminated with polycarbonate to either sides of it. Perhaps you are correct that something in the printer can damage the DVD dyes which could corrupt the data integrity. Interesting... Art If you are interested in issues surrounding e-waste, I invite you to enter the discussion at my blog: http://e-trashtalk.spaces.live.com/ N wrote: > I have a Canon MP970 and have printed on a number of CDs without problem. > > Recently I made copies of a data DVD then printed on the disks. When I > attempted to install the software from the copy, the installation > failed, early in the installation, stating that a file was corrupt. I > have no idea just how much of the data is corrupt. > > I've tried this with three DVDs using the same software DVD and had the > same problem. > > My next idea was to print the blank DVD then copy to it. That was > succesful. > > Is it possible that the small metal DVD detector in the printer's disk > tray is causing the corruption?
From: ato_zee on 10 Jul 2008 06:56 > DVDs have their light > sensitive layer in the middle of the DVD disk And a reflective surface, AFAIK this may be under the top layer.
From: Arthur Entlich on 11 Jul 2008 04:37
Unlike writable (and even manufactured) CDs where both the data and reflective layer are just under the top surface, both the light sensitive and reflective layers are in the middle of the disk, sandwiched between the two layers of polycarbonate plastic, so they are well protected. This is why I was somewhat suspect of the printer damaging the data (and reflective) layers. I should have probably been clearer in my posting in that the recommendation by the printers manufacturers to print before burning is probably much more significant with CDs than DVDs. Art If you are interested in issues surrounding e-waste, I invite you to enter the discussion at my blog: http://e-trashtalk.spaces.live.com/ ato_zee(a)hotmail.com wrote: >> DVDs have their light >> sensitive layer in the middle of the DVD disk > > And a reflective surface, AFAIK this may be > under the top layer. |