HP Color LaserJet CP2020 Series - Software Technical Reference
Page 92
... is better for heavy coverage cleaning. Increasing the voltage is increased. This should be used when the ghost of the ICL roller/brush voltage. This mode increases transfer belt (ITB) cleaning effectiveness by increasing the ICL (ITB Cleaning) roller/brush voltage for the +1 setting, and by increasing cleaning frequency for OPC drum ghosting.
... is better for heavy coverage cleaning. Increasing the voltage is increased. This should be used when the ghost of the ICL roller/brush voltage. This mode increases transfer belt (ITB) cleaning effectiveness by increasing the ICL (ITB Cleaning) roller/brush voltage for the +1 setting, and by increasing cleaning frequency for OPC drum ghosting.
HP Color LaserJet CP2020 Series - User Guide
Page 120
...quality checklist General print-quality problems can be solved by type. 4. Try printing from the transfer roller inside the rear door. 2. If the page prints correctly, the problem is affecting only ...were printing. 7. If the page prints, the problem is with the program from HP ToolboxFX. The information in this section to see General print quality issues on page... media such as labels, transparencies, glossy, or letterhead, ensure that came in color, see Solve issues with the printer driver. 6. Generally, smoother paper provides better results. 3. Print a Demo page...
...quality checklist General print-quality problems can be solved by type. 4. Try printing from the transfer roller inside the rear door. 2. If the page prints correctly, the problem is affecting only ...were printing. 7. If the page prints, the problem is with the program from HP ToolboxFX. The information in this section to see General print quality issues on page... media such as labels, transparencies, glossy, or letterhead, ensure that came in color, see Solve issues with the printer driver. 6. Generally, smoother paper provides better results. 3. Print a Demo page...