This is a brand - new Canon ImageRunner C5800 GPR26 SD black toner with a high yield of 40K. Canon, a well - known brand, ensures top - notch quality for your printing needs.

Using this Canon toner is easy. First, make sure your printer is turned off. Open the toner compartment and remove the old toner cartridge carefully. Then, take out the new Canon ImageRunner C5800 GPR26 SD black toner from its packaging. Remove any protective covers and insert it firmly into the printer. Close the compartment and turn on your printer. For the best results, store the toner in a cool and dry place. Avoid exposing it to direct sunlight or extreme temperatures. When it comes to maintenance, if you notice any print quality issues, you can try running the printer's cleaning cycle. If the problem persists, it might be time to replace the toner.