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This should be your copy unit, considering the model number you gave.. Before you order the toner cartridge please visually verify this matches your machine.
If that is the machine, ( and it should be ) you can purchase 4 toners here http://amzn.to/28Tc5Q2 at half the cost of the genuine canon toner http://amzn.to/28UlZnz
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Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.