Imation Stakka CD & DVD I20813 ユーザーズマニュアル
製品コード
I20813
The Imation Disc Stakka helps to maximise the
life of your discs
Disc Stakka not only helps you manage your CDs and DVDs and
protect them from loss, it also helps to make them last longer by
protect them from loss, it also helps to make them last longer by
protecting them from deterioration.
What is disc deterioration?
Under some circumstances, there can be a gradual deterioration of the data-carrying layer of
discs caused by corrosion and delamination. Symptoms of this deterioration can include picture
break-up and freezing at a specific place on a video disc.
With optical discs expected to last for 30 to 50 years, this deterioration has caused concern to
manufacturers and consumers alike, and a lot of research has been done into the causes.
This research has found that while there were a few manufacturing problems when the
technology was new, the problems we are seeing today are typically caused by improper
break-up and freezing at a specific place on a video disc.
With optical discs expected to last for 30 to 50 years, this deterioration has caused concern to
manufacturers and consumers alike, and a lot of research has been done into the causes.
This research has found that while there were a few manufacturing problems when the
technology was new, the problems we are seeing today are typically caused by improper
handling and storage of discs.
How discs work
CD-ROMs have an aluminium layer that reflects the light of the player’s laser, which is
separated from the CD label by a thin layer of lacquer. If this layer of lacquer is damaged, air
separated from the CD label by a thin layer of lacquer. If this layer of lacquer is damaged, air
can penetrate to oxidize the aluminium, which eats it up in much the same way as iron rusts in
air.
DVDs are a bit tougher in the sense that the data layer (or layers—some discs have two) is
sandwiched in the middle of the disc between two layers of plastic. But this structure causes
air.
DVDs are a bit tougher in the sense that the data layer (or layers—some discs have two) is
sandwiched in the middle of the disc between two layers of plastic. But this structure causes
problems of its own, especially in combination with the type of centre spindle used in DVD
storage cases. While most storage cases enable the easy release of the DVD, some cases
storage cases. While most storage cases enable the easy release of the DVD, some cases
have spindles that are so stiff, they cause people to flex the disc to remove it. This can put a
strain on the glue and also tear the edges of the outer lamination so that dust and other
strain on the glue and also tear the edges of the outer lamination so that dust and other
particles can creep in.
Improper handling and storage
Handling your CD-ROMs in a harsh manner, such as stacking them or allowing them to rub
against each other, can disturb their fragile protective layer and allow the atmosphere to
against each other, can disturb their fragile protective layer and allow the atmosphere to
interact with the aluminium.
Another common problem is caused because most people believe it’s the clear underside of
Another common problem is caused because most people believe it’s the clear underside of
the disc that is fragile, when in fact it’s the side with the label. Scratches on the underside have
to be fairly deep to cause skipping, while scratches on the top can easily penetrate to the
to be fairly deep to cause skipping, while scratches on the top can easily penetrate to the
aluminium layer. Even the pressure of a pen on the label side can dent the aluminium, and
render the disc unreadable.
render the disc unreadable.
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09/04