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Spots on copying: Chk is there any marks on flat bed glass?,clean flat bed glass with wet cotton cloth, allow it for dry. Spots on printing: There is no particular reason for this issue. clean paper path with wet cotton cloth & allow for dry..
Your question does not tell me what printer you have so I will assume it a modern HP made after 2004.
HP Printers use a ink cartridge and this is connected by a tiny pipe to the print head that sprays the ink on the paper. Your problem is with the Print head and not the ink supply.
There is a remote chance that some paper felt or paper dust, or even a stray piece of tape has blocked the lower part of the print head. I assume that this is the black print head, so that is the head marked with the letters K Y (Black and Yellow) on most modern HP Printers. Try to clean this using the clean or clear functions found in the maintenance section of the Printer Software. If that does not do the job then follow the instruction to replace the print head but rather replace the print head use a clean cotton pad with a few drops of alcohol to gently clean the print head and replace it as per the instructions. If that does not do the trick then the bad news follows....
Because the lower part of the Print Head gets the most use (., and underlining all use the bottom part) its also the first part of the Print Head to fail. If you live in the U.S. or Canada the print heads are not expensive. Go out and buy just the Black (K Y) if that is 80% or more of your printing use. If you are doing a lot of color it pays to buy the two heads together in one package.
did the print out improve after your clean the head? If all fails, try this last method.. take out all the ink and switch on the printer, when the printer detected no ink, it will ask you to insert the ink cart. Put back the ink cart and let the printer do ink charging.. pls make sure there is ink in the cart else it will damage the head. After the ink charging, print a nozzle check and see if there is any improvement.
# Hold the cartridge upside down, with the
bar-code label facing you and take a damp paper towel. # Use the towel to wipe the printhead of the
cartridge on the bottom (where the ink comes out). Wipe the printhead
horizontally in one direction only (left to right). # Continue doing this until it looks clean. # Then dab the cartridge on the towel to make sure
the ink is flowing. # Next, look inside the printer and locate the
carrier that holds ink cartridges. Caution: Make sure the cartridges are not
installed at this point.
1. Look for a shiny piece of metal underneath the
contacts at the back of the carrier. 2. Take a damp cotton swab (use water only!) and
wipe along the bottom of the shiny metal piece. Note: You may need more than
# Reinstall the cartridges, making sure you snap
them correctly into the printer.