I received a cleaning kit, removed and cleaned the print head, replaced all the ink cartridges and ran the print test and printed a paragraph of a document. Sadly, the shadow on printing still exists.
The grid pattern at the top of the print test is 100% perfect. The blue, pink and yellow bars seem perfect, but the grey bar at the bottom is two tones. The bar is 10 mm thick comprised of three bars, the upper and lowest are about 2 mm each and the middle bar is 6 mm and is LIGHTER in color from the upper and lower ones. What is odd, is that every letter or number that is printed on the page has NO shadow.
I also printed the "Head Alignment Value," but I don't understand it.