Samsung CLP-510 Series - Manual (Page 82)

U SING P RINT M ATERIALS
3.15
3
4 Squeeze the paper width guide and slide it to the right to
touch lightly against the edge of the stack without causing
it to bend.
5
When you print, set the paper source to MP Tray and the
paper type to Envelope, and select the correct paper size
in the software application. For details, see page 4.7.