Print Quality
2The light or dark horizontal lines could also be caused by permanently damaged printheads. 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.
| If you want the best high quality image from your printer, replace |
| the damaged printhead with a new one. |
| However, your printer can still produce good quality line prints. |
NOTE | |
| Banding Caused by Media Advance Problems |
| |
| Another type of banding is caused by an inaccurate media advance |
| in this case there will be banding (horizontal repetitive bands along |
| the test pattern) in all the primary and secondary color columns. |
| The bands can appear as dark bands, due to a shorter advance of the |
| roller which causes an overlap, or lighter bands due to a longer |
| advance causing spaces. |
| 3 |
C6074281
HP DesignJets 1050C and 1055CM Printers Service Manual |