Epson Stylus Pro 4400 Reference Manual page 338

A ruled line shifts
Perform the print head alignment. For Windows, see "Aligning
the print head" on page 81. Mac OS 9.x, see "Aligning the print
head" on page 166. For Mac OS X, see "Aligning the print head"
on page 220.
If the problem persists, perform the print head cleaning. For
Windows, see "Cleaning the print head" on page 80. For Mac OS
9.x, see "Cleaning the print head" on page 165. For Mac OS X, see
"Cleaning the print head" on page 219.
Printout has smears on the bottom edge
Try one or more of these solutions:
❏ If the paper is curled towards the printable side, flatten it or
curl it slightly to the opposite side.
❏ For Windows, if you use Epson special media, check the
Media Type setting in the Main menu. See "Making Settings
on the Main Menu" on page 21.
For Mac OS 9.x, if you use Epson special media, check the
Media Type setting in the Print dialog. See "Making Settings
in the Print Dialog" on page 117.
For Mac OS X, if you use Epson special media, check the
Media Type setting in the Print Settings selected in the Print
dialog. See "Page Setup" on page 188.
For paper other than Epson's, register and select paper
thickness in the SelecType mode. Make sure it is correct for
the paper you are using. See "Making the paper settings" on
page 253.
❏ Set the PLATEN GAP to WIDE in the PRINTER SETTING of the
SelecType mode. See "PRINTER SETUP" on page 235.
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