User's Manual
Table Of Contents
- Introduction
- Welcome to your printer
- Safety precautions
- Main components
- Turn the printer on and off
- Front panel
- HP Utility
- HP Print Preview
- Embedded Web Server
- Demo prints
- Configure your printer
- Connect the printer to your network
- Install your printer under Windows
- Uninstall the printer software under Windows
- Install your printer under macOS
- Uninstall the printer software under macOS
- Set up printer services
- Control access to the printer
- Require account ID
- Drivers
- Set Windows driver preferences
- Change the graphic language setting
- Mobile printing
- Accessibility
- Other sources of information
- Paper handling
- General advice
- Load a roll onto the spindle
- Load a roll into the printer
- Unload a roll
- Load a single sheet
- Unload a single sheet
- Sensitive-paper mode (Z6dr and Z9+dr only)
- View information about the paper
- Paper presets
- Printing paper info
- Move the paper
- Feed and cut the paper
- Maintain paper
- Change the drying time
- Turn the automatic horizontal cutter on and off
- Turn the automatic vertical trimmer on and off (Z6dr and Z9+dr only)
- Use the take-up reel
- Working with two rolls (Z6dr/Z9+dr only)
- Networking
- Printing
- Introduction
- Print from a USB flash drive
- Print from a computer using a printer driver
- Advanced print settings
- Select print quality
- Select paper size
- Select margin options
- Print on loaded paper
- Rescale a print
- Change the treatment of overlapping lines
- Preview a print
- Print a draft
- High-quality printing
- Print in gray shades
- Print with crop lines
- Use paper economically
- Nest jobs to save roll paper
- Use ink economically
- Protect a paper type
- Unattended printing/overnight printing
- Mobile printing
- Job queue management
- Color management
- Practical printing examples
- Retrieving printer usage information
- Handling ink cartridges and printheads
- Maintaining the printer
- Accessories
- Troubleshooting paper issues
- Paper cannot be loaded successfully
- Paper type is not in the driver, HP Utility, or front panel
- Printer printed on the wrong paper type
- Automatic cut not available
- On hold for paper
- Which criteria are used to decide on which roll a job will be printed?
- When is a job put on hold for paper?
- If I load a new roll of paper, will jobs that were on hold for paper be automatically printed?
- I don’t like jobs being put on hold for paper. Can I prevent it?
- My job is exactly as wide as the roll of paper that is loaded on the printer, but is put on hold for ...
- Roll paper will not advance
- Paper has jammed
- Strip stays on the output tray and generates jams
- Strip stays in the output area and cutter rail area and generates jams (Z6dr and Z9+dr only)
- Printer displays out of paper when paper is available
- Prints do not fall neatly into the basket
- Sheet stays in the printer when the print has been completed
- Paper is cut when the print has been completed
- Horizontal cutter does not cut well
- Vertical trimmer does not cut (Z6dr and Z9+dr only)
- Vertical trimmer does not cut accurately (Z6dr and Z9+dr only)
- Vertical trimmer: printer reports missing modules (Z6dr and Z9+dr only)
- Vertical trimmer leaves marks on waste paper
- Roll is loose on the spindle
- Recalibrate the paper advance
- Troubleshooting print-quality issues
- General advice
- Horizontal lines across the image (banding)
- Banding appears as irregular watermarks
- Whole image is blurry or grainy
- Paper is not flat
- Print is scuffed or scratched
- Ink marks on the paper
- Black ink comes off when you touch the print
- Edges of objects are stepped or not sharp
- Edges of objects are darker than expected
- Horizontal lines at the end of a cut sheet print
- Vertical lines of different colors
- White spots on the print
- Colors are inaccurate
- My print does not have gloss uniformity (Z9+ only)
- Image is incomplete (clipped at the bottom)
- Image is clipped
- Some objects are missing from the printed image
- Lines are too thick, too thin or missing
- Lines appear stepped or jagged
- Lines print double or in the wrong colors
- Lines are discontinuous
- Lines are blurred
- Line lengths are inaccurate
- Image Diagnostics Print
- If you still have a problem
- Troubleshooting ink cartridge and printhead issues
- Cannot insert an ink cartridge
- Ink cartridge status messages
- Printer does not detect the gloss enhancer cartridge (Z9+ only)
- Cannot insert a printhead
- Front panel recommends reseating or replacing a printhead
- Clean the printheads
- Clean the printhead drop detector
- Align the printheads
- Printhead status messages
- Troubleshooting general printer issues
- Front-panel error messages
- HP Customer Care
- Printer specifications
- Glossary
- Index
General advice
When you have any print-quality problem:
● To achieve the best performance from your printer, use only genuine manufacturer's supplies and
accessories, whose reliability and performance have been thoroughly tested to give trouble-free
performance and best-quality prints. For details of recommended papers, see Order paper on page 141.
● Make sure that the paper type selected in the front panel is the same as the paper type loaded into the
printer (see View information about the paper on page 35). At the same time, check that the paper type has
been calibrated. Also make sure that the paper type selected in your software is the same as the paper
type loaded into the printer.
CAUTION: If you have the wrong paper type selected, you could experience poor print quality and
incorrect colors, and perhaps even damage to the printheads.
● Check that you are using the most appropriate print-quality settings for your purposes (see Printing
on page 59). You are likely to see lower print quality if you have moved the print-quality slider to the 'Speed'
end of the scale, or set the custom quality level to Fast.
● Check that your environmental conditions (temperature, humidity) are in the recommended range. See
Environmental specications on page 197.
● Check that your ink cartridges and printheads have not passed their expiration dates: see Maintain the ink
cartridges on page 136.
Horizontal lines across the image (banding)
If your printed image suers from added horizontal lines as shown (the color may vary):
1. Check that the paper type you have loaded corresponds to the paper type selected in the front panel and in
your software. See View information about the paper on page 35.
2. Check that you are using appropriate print-quality settings for your purposes (see Printing on page 59). In
some cases, you can overcome a print-quality problem merely by selecting a higher print-quality level. For
instance, if you have set the Print Quality slider to Speed, try setting it to Quality. If you change the print-
quality settings, you may wish to reprint your job at this point in case the problem has been solved.
3. Print the Image Diagnostics Print and follow the instructions in Image Diagnostics Print on page 175,
including printhead cleaning if recommended.
4. If the printheads are working correctly, go to the front panel and tap , then Paper advance
calibration. Choose the paper source and then Paper advance calibration. See Recalibrate the paper
advance on page 160.
If the problem persists despite all the above actions, contact HP Support: see Contact HP Support on page 193.
164 Chapter 15 Troubleshooting print-quality issues ENWW