Samsung GX-10 Brochure & Specs page 8

Anti-Dust Coating
Every time a DSLR camera lens is changed, the CCD is potentially
exposed to dust. If dust settles on the CCD, it can show up as
black spots on your pictures.
To prevent this, the GX-10's CCD features a special anti-dust
coating that helps keep pictures free from unsightly blemishes.
Dust Removal Function
In addition to the CCD's anti-dust coating, the GX-10 features an
advanced dust removal function in which the CCD is lightly
shaken at startup to shed any dust that may have withstood the
dust resistant coating.
* The Dust Removal function can be set to either manual or automatic from the menu.
Dual Dust Removal
System
keeps the CCD clean