Epson Stylus Photo 1290 User Manual page 118

You can make the following settings in the Page Setup dialog box.
Paper Size
Paper Source
5-20
Using the Printer Software for Macintosh
Select the paper size that you want to use. If you want
to define a custom paper size, see "Defining a custom
paper size" on page 5-23.
Select the paper source you wish to use from the
following selections.
Sheet Feeder:
Select this to leave a 3-mm margin on both the right and
the left sides of the paper. This option is available when
printing on normal paper.
Roll Paper:
Select this to leave a 3-mm margin on both the right and
the left sides of the roll paper.