- Hewlett-Packard LaserJet Printer Owner's Manual

ENWW Chapter : 7
I/O Buffering
To allow the computer to continue working without waiting for the
print job to finish queuing, the printer uses a portion of its memory
(an I/O buffer) to hold jobs in progress. (If I/O buffering is off, no
memory is reserved for this function.)
In most cases, it is best to let the printer automatically reserve
memory for I/O buffering. (For each megabyte of memory added to
the printer, 100 kilobytes are reserved.)
To speed network printing, you might want to increase the amount
of memory reserved for I/O buffering.
To change the I/O Buffer setting:
1 From the I/O Menu, set I/O BUFFER=ON (page B-15).
2 Also from the I/O Menu, set I/O SIZE to the desired value.
Note When you change the I/O Buffer setting, all downloaded resources
(such as fonts or macros) will need to be downloaded again, unless
they are stored on an optional hard disk or flash DIMM.