EnvelopesUse either European DL or US Com. #10 size envelopes.Preparation for Printing1 Press down on all four corners and edges of the envelopes to flatten them as shown in 2below.2 If the envelopes are curled, hold the opposite corners and gently bend them in the oppositedirection.Ensure that the flap of the envelope is perfectly straight.3 If the leading edge of an envelope is puffed up or curled, use a pen to press the envelopeflat and sharpen the crease.Press the envelope completely flat, working from the middle to the edge.* The above illustrations show a side view of the leading edge of the envelope.Envelopes may jam in the printer if they are not completely flat and the edges are not aligned.Ensure that no curl or puff exceeds 3 mm (0.1 in).Unsuitable EnvelopesEnvelopes with an embossed or treated surfaceEnvelopes with a double flap or pressure sealsEnvelopes with sticker flapsLoadingPlace envelopes lengthwise with the flap to the left and the address side facing upwards.A maximum of 5 envelopes can be loaded at once.