Epson DLQ-3500 User Manual page 166

Pre-printed Paper
Pre-printed paper is paper with white space in the middle and
ruled lines, letters, or figures printed in the top and bottom
margins. The margins are printed the first time the paper is loaded
in the printer, and a document is printed in the white space the
second time the paper is loaded in the printer. The margin areas
are often used for letterheads, borders, and so on. You can make
your own pre-printed paper or you can purchase it.
You cannot preprint in the area with the diagonal shading in the
illustrations below, and can preprint only with colors whose
reflectivity is under 60% (for instance black). Avoid punching
holes in the restricted area below because punctures are also
recognized as colors whose reflectivity is under 60%.
Before printing on pre-printed sheets, verify that the area your
document will print on does not overlap with the pre-printed area
by printing separate sample sheets and comparing their printed
areas.
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