Printronix T4204 - Manual (Page 213)

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Setting The Page Length
Observe the following considerations when you set the Page Length value
(the length of the leading edge to the trailing edge of the label) in the Printer
Control menu, or set the Host Forms Length via host software:
• When using continuous media (no gaps, notches, holes, or black marks),
the physical page length will be based on the Page Length value in the
Printer Control menu or the Host Form Length value sent via host
software. The user selected page length will dictate what the physical
length will be.
• When using non-continuous media (with gaps, notches, holes, or black
marks) the Physical Page Length is established by the distance between
the trailing edge of the gap, notch, hole, or black mark.
• Logical Page Length, also refered to as the printer control page length or
the Host Form Length, is usually the same measurable length as the
Physical Page Length, but it can be programmed to be greater or less
than the physical length of the label material installed on the printer. This
results in the image being clipped off, moved to the next physical page, or
having a blank space on the remaining portion of the physical page.
• In the default case any form or page length sent from an emulation (the ^L
or ^H command in VGL and the length defined within the ~CREATE
statement in PGL) will be used to force the page length.
• The media sensors (Transmissive or Reflective) are used to detect the
Top-of-Form position, based on the trailing edge of the gap, notch, hole,
or black mark. If the page length you have selected (either from the
secondary control panel or through the host) does not match the physical
page length, then the printer will attempt to map the logical page onto the
physical page.
If the logical page length is less than the physical page length, the printer will
leave white space at the end of the label so that the next logical page will start
at the beginning of the next physical page. If the user-selected (logical) page
length is greater than the physical page length, the printer will clip the page to
fit onto the physical page when the Clip Page option is enabled under the
Printer Control menu. In this case, the printable data that was not printed is
lost. With Clip Page disabled, the remaining printable data would be printed
starting at the Top-of-Form position on the next page, after a paper advance.