HP Designjet 4520 HP Designjet 4020 and 4520 Printer Series - User's Guide: En - Page 161
Lines are missing or thinner than expected, Solid bands or lines printed over the image
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Lines are missing or thinner than expected 1. Check that the line thickness and color settings are correct in your application. 2. Check that you are using appropriate print quality settings. See Choose print quality settings on page 57. 3. If the problem persists, clean the printheads. See Recover (clean) the printheads on page 97. 4. If the problem persists, use the Image Diagnostics Print to find out more about it. See How do I... (Image Diagnostics Print topics) on page 117. Solid bands or lines printed over the image This kind of problem can show itself in several different ways, illustrated below in magenta: 1. A thick colored band 2. Thinner colored bands 3. Discontinuous colored blocks 4. Thin lines Print quality problems In each case the recommended procedure is as follows: 1. Clean the electrical connections of the printhead that seems to be responsible (in this example, the magenta printhead). See Clean a printhead's electrical connections on page 97. 2. Clean the printheads. See Recover (clean) the printheads on page 97. ENWW Lines are missing or thinner than expected 151