Canon MB2300 series Online Manual page 168

8. Select the size and type of the loaded envelopes in the cassette at Page size and Type,
then tap Register.
Paper setting for Printing
9. Extend the output tray extension (H), then open the paper output support (I).
Note
• When printing, select the size and type of the loaded envelopes on the print settings screen of the
printer driver.
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