HP Color LaserJet CM1312 MFP Serie Guide De Référence Rapide page 8

Make my scan look better
1 Turn off the product, unplug the power cord from the electrical socket,
and raise the lid.
2 Clean the glass by using a soft cloth or sponge that has been moistened
with nonabrasive glass cleaner.
3 Clean the scanner strip by using a soft cloth or sponge that has been
moistened with nonabrasive glass cleaner.
4 To prevent spotting, dry the glass by using a chamois or cellulose
sponge.
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