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There are different types of damage that can occur to a disc, and thousands of
creative ways it can occur – just ask any teenager!
Repairable by Reface (‘Play’ Side Damage)
Bottom Scratch. This is the most common type of scratch and is repairable
99% of the time as this is the thickest part of disc and can take the most
misuse and abuse.
Non Repairable (Permanent Damage)
Top Scratch. This is the worst place for a scratch due to the data and
reflective foil layers being located in the top 1% of the CD, very close to the
surface and most susceptible to permanent damage. The foil layer is needed by
the laser to reflect the data back to the player for processing. However there
may be light scratches on the top of some discs and these may not affect play at
all, as in the case of DVD’s due to their construction specifications. A quick
way check if a disc is affected by foil damage is to hold the disc up to a
fluorescent light and if you can see light through it then the data at that
position on the disc has been permanently removed.
Pin Hole Foil Punctures.
The data where the damage has occurred cannot be restored, but the play side can
still be repaired completely back to ‘as new’ condition to aid with the backing
up of the remaining data stored on the disc.
Warped.
The physical properties of the disc have been altered affecting the data and
foil layers therefore cannot be repaired by the DGM-6 process.
Cracked.
Once again this is by non repairable as the data has been compromised. |