HP QMS 1660E - Manual (Page 82)

Memory
QMS 1660E Print System Reference 4-50
» Note: The printer does not allow you to choose features that do not
work with the amount of memory currently installed.
Using this option does not change the media size. It just ensures that
you have enough memory allocated to the appropriate clients to print
on the requested media size.
PostScript Fonts
The K Mem for PS Fonts memory client is the number of kilobytes of
RAM dedicated to caching previously scaled bitmap representations
of fonts for the PostScript emulation interpreter. This reduces the
number of times a PostScript font must be converted from outline
form to bitmap form, thus reducing processing time. K Mem for PS
Fonts is listed on the status page as Font Cache.
Menu Administration/Memory/Frame Buffer/300 dpi
Choices 12x19
Default 12x19
Menu Administration/Memory/Frame Buffer/600 dpi
Choices 11x17, 12x19, A3, A4, A5, B4, B5, B6, executive, full ledger,
legal, letter, postcard, and universal
Default 11x17
Menu Administration/Memory/Frame Buffer/1200 dpi
Choices 11x17, 12x19, A3, A4, A5, B4, B5, B6, executive, full ledger,
legal, letter, postcard, and universal
Default letter
Menu Administration/Memory/K Mem for PS Fonts
Choices 00088-08192
Default 00168
Notes If you change the K Mem for PS Fonts value, the printer
automatically restarts after you save your changes and exit
from the configuration menu.