HP 1050c Service Manual - Page 165

Print Quality IMPORTANT Problems with Horizontal Lines (Banding) Description of problem When you look at the image you have printed there are light or dark lines on the image, these are particularly highlighted in high density ink areas. This problem is known as banding. Banding can occur to a certain degree in draft and normal mode when printing high density prints. To obtain the best image always print in Best Mode. Shown below is an example of what you might see if you have problems with banding. 80 80 NOTE Expanding Possibilities 80 Ironk Pojfdjop ernk Pojfdjop ernk aure Chorme Pojfdjop ernk aure Expanding Possibilities 80 80 kheuhg kheuhg sfrfefg sfrfefg IInnkkercovarCtraipdsge C6074306 How to solve the problem While performing the next procedure, duplicate the condition the printer was in when you discovered the problem: use the same media and the same print mode. 1 Ensure that the paper you have selected in the front panel is the same paper that you have loaded. 2 Perform the Printhead Alignment Calibration. 3 Reprint your image. 4 If you have printed your image in Normal or Draft mode and it is not acceptable to you, re-print it in Best mode. Check the front panel and driver selection to make sure that Best mode is selected. HP DesignJets 1050C and 1055CM Printers Service Manual 6-17