This is a brand - new Canon Imagerunner C250If Gpr51 SD cyan toner with a high yield of 21.5K. Canon, a well - known brand, ensures quality and reliability for your printing needs.

Using this Canon cyan toner is easy. First, make sure your printer is turned off. Open the toner compartment of your Canon Imagerunner C250If. Take out the old toner cartridge carefully and then insert the new C250If Gpr51 SD cyan toner. Close the compartment and turn on the printer. When handling the toner, avoid shaking it too much to prevent spills. Store the toner in a cool, dry place away from direct sunlight. For long - term use, it's a good idea to keep some extra toner on hand. If you notice any printing issues, like streaks or low - quality prints, it might be time to replace the toner again.