HP 83A New Compatible Black Toner Cartridge
repetitive dark spot caused by the cartridge
Thank you very much for contacting 123inkcartridges.ca.
Please try the following instruction to solve the problem:
Sometimes this could happen when print label, the glue from the label may stick on the drum unit.
or dust got into the drum unit.
To clean the drum unit:
- Position the print sample in front of the cartridge. Find the exact position.
- Roll the gear on the side by hand looking at the position to find the “problem”
- After you located the “problem” that matches the print sample’s position.
Try wiping the surface of the drum with a cotton swab until the dust or paper powder on the surface comes off.
If you see a scratch on the unit, please let us know.