Printronix SL_T5R Energy Star - Manual (Page 340)

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Appendix A
Maximum Page Length
The maximum page length is 99 inches. There is enough page memory
allocated to support printing one 99 inch page. The Page Mem Adjust menu
option represents the longest form length used on the printer (users should
know the length of the applications they plan to run on the printer). User
applications that are less than or equal to the default setting of 24 inches do
not need to modify the value. Proper use of this menu facilitates optimal use
of system memory.
NOTE: The Page Mem Adjust value resets when the printer firmware is
downloaded and/or the printhead (203 DPI or 300 DPI) is changed.