optimal quality

the HP Photosmart C410 had already more than 45 000 pages on the clock. The printed image was no longer optimal. After changing the print head everything like new. Since no detergents are supplied with a contact spray and lint-free cloths should be present, because in a large number of pages, the contact plate is pretty dirty. The transport rollers under the print head (in the ink-replaceable position) must be cleaned)