The guide rollers collect the toner from the paper and pour it directly onto the glass of the lower scanning element. As a result, when scanning, two vertical black stripes (2 cm thick) are formed on the digital image, even overlapping the text. For their appearance, it is enough to scan 3-5 pages, which makes the device unusable in principle. Glass has to be counted after 3-5 pages (20-25 pages in the contract). It is not possible to scan the incoming primary accountant for the same reasons. The service said that this is normal - good! You only need to scan prints on branded xerox paper, branded tenor xerox, xerox equipment, and everything will be super. P. S. Now we think to throw out this device as useless .