Pentax PocketJet 3 User Manual page 21

'Fixed Page' mode is typically appropriate. It assumes a known
page length (based upon the 'Form Length' and/or 'Paper
Size' settings). It advances a new sheet to the printing
position, and attempts to eject it at an appropriate distance
based upon the length of the page.
'End of Page' mode makes no assumptions about page length,
and will continue to feed the paper forward to a maximum
page length of 14" or until the Paper Sensor detects that no
paper remains in the input of the printer. Note that either the
end of a cut sheet, or the black mark printed on the back of
certain roll and perforated paper will be detected as the end of
a page.
'No Feed' mode ignores all Form Feed commands, and does not
advance the paper after printing. This can be of particular
help to roll paper users who are printing only partial pages
and do not wish to waste additional paper at the end of each
document. The page may be manually advanced using the
Main Switch.
Paper Size:
For standard paper sizes, this setting determines default
margins and expected length for each printed page. For
'Custom' sizes, margins and length may be set using the
commands 'Form Length', 'Bottom Margin', 'Left Margin' and
'Right Margin'.
'Letter' size assumes an 8-1/2 x 11" page, and sets a total
printable height of 10.67", which in turn provides for a top
margin of about 0.27", and a bottom margin of about 0.06".
Printable width is set to 8.16" with 0.17" margins on either
side.
'Legal' size assumes an 8-1/2 x 14" page, and sets a total
printable height of 13.67", and top and bottom margins of
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