HP 450c HP DesignJet 430/450C/488CA Printer - UserÂ’s Guide - Page 108

Special internal prints Using the Print Quality Test Print colors, the composite color will be present in one part of the circle and white will be visible at the opposite side of the circle. Misalignment can be horizontal or vertical, or a combination of the two. If either set of patterns shows an alignment problem (a third color is present or there is misalignment in the boxes or the circles of the test image), try the following: 1 Perform the Color Cartridge Test Procedure (see page 5-8) and print the Print Quality Test Print again to see if there has been any improvement. 2 If the problem continues, replace the failing cartridge and print the Print Quality Test Print again. Test 5 (Color Variation) This test produces four boxes in yellow, black, cyan and magenta. In each box there are two horizontal bands; the lower band is a 100% shade, the upper band is shaded from 100% scaling to 60%. The purpose of this test is to determine at what percentage the upper shading becomes visible from the lower band. The best way to do this is to cover the box with a piece of paper and slide the paper horizontally across the box. Stop as soon as you see a different shade in the upper box. You can then determine the percentage scaling from the figure at the top or bottom of the box. Correct Incorrect If the upper box shading is never visible or is visible only at a very low percentage, it is an indication that the cartridge is producing incorrect size ink drops. Try the following: 1 Replace the failing cartridge and print the Print Quality Test Print again. 5-16