"shiny" spots on bottom of burned DVD-R

[poopyhead]

well,

just recently i noticed that on the bottom of some of my burned DVD-R, there are some patches of what seemed to be unburned area.

when the bottom is burned, it becomes more dull, however, there were some spots that were "shiny" like it hasn't be burned at all. i'm not sure if that's a problem or not.

i played the DVD-R for a little bit and nothing seems wrong, but i'm not sure.

pioneer ao4 2x firmware hack burning princos at 1X.

however, most of the DVD-Rs have no such spots whatsoever. dunno if other people see those "shiny" spots on the bottom and just wondering if it's a problem.

[garryheather]

The error correction on your player should be able to deal with most imperfections like that, so you will probably get away with it.

I always blow over the surface of my blank media with a can of air duster to make sure there are no bits of fluff, carpet fibres, bug splats or remnants of curry on it before burning for this reason. It is preferable to burn a disc without the optical equivalent of a "drop out", but so long as it's not too severe it shouldn't be an issue so long as you keep the disc clean and look after it (the error correction mechanism can only compensate for so much so don't take the P with it !).

[txpharoah]

Used canned air (do NOT blow on them because then you'll just add spit) to clean the discs before burning. Your discs were dirty when they were burned.

[garryheather]

Can I just point out my reference to "a can of air duster" - I don't want people think I go around gobbing on my discs like TX seems to think I do !

I do have a reputation to live down to around here...

[txpharoah]

like TX seems to think I do !

I was talking to poopyhead. No confusion intended.

[defense]

The error correction on your player should be able to deal with most imperfections like that, so you will probably get away with it.

I always blow over the surface of my blank media with a can of air duster to make sure there are no bits of fluff, carpet fibres, bug splats or remnants of curry on it before burning for this reason. It is preferable to burn a disc without the optical equivalent of a "drop out", but so long as it's not too severe it shouldn't be an issue so long as you keep the disc clean and look after it (the error correction mechanism can only compensate for so much so don't take the P with it !).

The error correction will almost certainly take care of those minor issues.

I remember seeing that for the first time on the Bourne Identity backup..watched the entire thing and it played flawlessly..all the way through to the last second of ending credits.

But since then...I realized it may be particles of dust which caused this, so I have several compressed air duter cans on hand. Office Depot is having a sale on a 2 pack for $9.99. They are usually $5.99 each so that saves you a couple of dollars. Anyway, since i've used the air duster on all dvd's prior to burning, i've never seen that issue again.

[poopyhead]

thnx for the info every1.

now that i think about it, i may have exposed the bottom of the DVD-R to the air for awhile. i think i left the DVD-R (upside down, with the bottom facing up) on my desk for couple of minutes. i guess it collected dust while being on my desk. i checked the DVD-Rs in my spindle and none of them has dust, so it seems that only if i leave it out for too long, then it collects dust.

btw, i played the DVD-R (with shiny spots) for awhile longer and didn't see any problems.

[txpharoah]

Optical electonics devices and media are dust magnets. Ask any digital photographer or a lab that used electronic microscopes. Dust just sees the discs, optics, etc and launches an all out assault!

So yeah, those few seconds were plenty of time to stack up a nice dust collection. Always go from spindle/case to DVD tray. Any delays will build dust, especially in static'y climates.