Canon Satera LBP-5600SE User Manual page 76

When loading envelopes at size of KAKUGATA No.2 (in case of LBP5900SE),
•
leave the flaps open and load them so that the bottom of the envelopes is toward
the back of the printer when viewed from the front.
When loading envelopes at size of Envelope B5 (in case of LBP5600SE), close the
•
flaps and load them so that the bottom of the envelopes is toward the front of the
printer when viewed from the front.
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