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Causes of Grey Background:
A damaged or worn OPC may cause toner powder unable to adhere to the magnetic roller correctly, hence, toner powder may fall on the print-out and cause background issues.
High resistance of PCR may undercharge OPC Drum and cause a low electric potential, which may cause toner powder to be unable to adhere properly and cause background issues.
- The toner powder is moist and damaged.
- Either high or low levels of humidity could be an influence on the function of key parts.
- An aged or deformed cleaning blade may result in residue bonded on the OPC drum and cause “grey background” issues.
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Causes of Sticking Lines on Printouts
- PCR could have been contaminated by toner powder.
- OPC drum could have been scraped to damage.
- Developer roller or Magnetic roller could have been scraped to damage.
- Wiper blade or doctor blade could have been damaged.
- With longer storage time, the blade may cause a pressure mark on the developer roller and result in “periodic sticking lines”.
For more information on how to maintain your printer, check out our FAQ or learn How Does Printer Toner Work?