3-40 Loading Envelopes in the Paper SourceLoading and Outputting Paper3Loading Envelopes in the Paper SourceThis section describes the procedure for loading envelopes in the paper source.The paper source that you can load envelopes is the paper cassette and manualfeed slot. If you want to print continuously, load the envelopes in the paper cassette.When printing only one envelope that is different from those loaded in the papercassette, load the envelope in the manual feed slot.IMPORTANT• For more details on the usable envelopes, see "Usable Paper," on p. 3-2.• For details on handling the manual feed slot or paper cassette, see "Precautions forHandling the Manual Feed Slot or Paper Cassette," on p. 3-13.Loading Envelopes in the Paper CassetteLoad envelopes in the paper cassette using the following procedure.• When loading envelopes at sizes of DL, COM10, C5, or Monarch in the papercassette, load them in portrait orientation so that the printing side is facing up andthe flap is toward the right of the printer when viewed from the front.( : Feeding direction)