Fluffs on my glases

Question

hello from germany to the world !i have found your side through my search with google.i have a big problem with my scanner. everytime i do a scan - i have the problem that after the scan i have pieces of fluff on the scannerglas. the fluffs on the top of the glas is no problem - i clean after every scan. but how can i get on the other side of the glas? how can i clean the backside?thanks a lot...in advancemaxprint...and please excuse my bad english.