"Mick." <mrcycleuk@yahoo.co.uk> wrote in message
news:2qauehFt1nljU1@uni-berlin.de...
From the canon support pages
Clean off the dirt and dust that adheres to the exterior, document glass and
document cover of the scanner during the course of ordinary operation using
the following procedures.
1.. Unplug the AC adapter from the electrical outlet and detach the USB
cable from the computer.
2.. When cleaning the document cover or document glass, dampen a clean,
soft cloth with water and wring the cloth well. Use the well-wrung cloth to
gently remove dirt and dust. Then, thoroughly remove any moisture or water
vapor with a soft, dry cloth. Be particularly careful to remove any traces
of dirt or liquid when wiping the document glass.
a.. Moisture left on the document glass or cover may damage photographs
and other documents as well as produce poor results.
b.. Do not dampen the connectors, ports or other metallic components on
the scanner's back panel. Immediately remove any moisture that contacts
these components by wiping them with a dry cloth.
c.. Do not use a sodden cloth or apply a liquid directly to any portion
of the scanner. Any moisture that enters the interior, the underside of the
document glass or the sensors may degrade image quality and lead to
malfunctions.
d.. Never use substances containing alcohol, thinners or benzene on the
equipment. Use of these substances may deform, discolor or dissolve the
casing.
The fix dust and scratch is for when u scan photos not film i beleive
