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Please specify the model of your Canon printer.
Remove the rear cover
Check if you can see the cartridge.
When you remove the rear cover (from the back of printer), you will see a white colored Transport unit. Pull it towards yourself and see if you can find the ink or not.
Okay then turn off the printer and disconnect the power cord. Open the front panel. Do not touch any band inside the printer. Slide the ink carriage to the either side and see if you can find the ink.
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