Epson Stylus Photo 750 User Manual page 80

You can use EPSON
4 6-inch Photo
Paper like a postcard.
After printing on the
glossy side of the
Photo Paper, let your
image dry a minute or
so. Then set the
paper thickness lever
to the + position,
reload the flattened
card with the
uncoated side up,
and print your
message in black ink
using 360 dpi Ink Jet
Paper as the Media
Type setting.

    
 
3 Choose these printer software settings:
Photo Paper as the Media Type setting
EPSON Photo Paper 4
Maximum as the Printable Area setting
4 After you print, fold the paper back and forth along the perforations
and carefully tear off the margins.
6 in as the Paper Size setting