On the off chance that the nature of shading isn't great, the printed paper isn't eye-infectious. In shading printers, the nature of shading imprinted on paper is must be great. A decent printer comprehends where to print light shading or where dull shading. Concealing is huge for customers who need to print pages for presentations or maps and various pages where concealing is a bit of the information. A printer can print different hues simultaneously is known as a shading printer. CMYK shading model is a model on which a large portion of the printers based. CMYK shading model is print in four fundamental hues. If your HP printer not printing in black don't worry it is not a big issue. The four fundamental hues are dark, fuchsia, cyan and yellow. Different hues are printed with the mixes of these hues.