HP 1050c Service Manual - Page 168

Print Quality 11 When you look at the image you have printed there is banding on the image, but only in a few colors, similar to the example shown below. 3 NOTE C6074280 a The possible combinations with this problem are: n Banding in cyan, blue and green columns only, but more evident in cyan. This means that the cyan printhead could be permanently damaged. n Banding in magenta, red and blue columns only, but more evident in magenta. This means that the magenta printhead could be permanently damaged. n Banding in yellow, red and green columns only, but more evident in yellow. This means that the yellow printhead could be permanently damaged. n Banding in black column only. This means that the black printhead could be permanently damaged. b If you want optimal print quality from your printer, replace the damaged printhead with a new one. However, the printer can still produce good quality line prints. 6-20 HP DesignJets 1050C and 1055CM Printers Service Manual