User Guide

EN Formatter system 79
Enhanced I/O
The Enhanced I/O feature allows product memory to be used for
storing data received from the host computer. When Enhanced I/O is
enabled, you can send more data to the product in shorter amounts of
time, which allows you to return to your application sooner. Enhanced
I/O has the following options:
 Auto—allows the product to use Enhanced I/O memory
allocation to increase the speed of data transfer from the host
computer to the product, if necessary. The default setting is Auto.
 Off—uses the minimum amount of product memory for storing
data sent from the host computer.
 Page Protect—allows the formatter to create the entire page
image in page buffer memory before physically moving the media
through the printer. This process ensures that the entire page will
be printed.
Page complexity (ruling lines, complex graphics, or dense text)
can exceed the printer’s ability to create the page image fast
enough to keep pace with the image formation process. If Page
Protect is disabled and a page is too complex, the page might
print in parts (for example, the top half on one page and the
bottom half on the next page). Some print-data loss is likely in
these instances, and the product will display an error message.
PJL overview
Printer Job Language (PJL) is an integral part of configuration, in
addition to the standard Printer Command Language (PCL). With
standard ECP cabling, PJL allows the product to perform functions
such as:
 Two-way communication with the host computer through a
bidirectional parallel or USB connection. The product can
communicate information to the host (such as the control panel
status).
 Isolation of print environment settings from one print job to the
next. For example, if a print job is sent to the printer in landscape
mode, the subsequent print jobs print in landscape only if they
are formatted for landscape printing.