HP 3000 Manuals HP 3000 Manuals
How to Use Duplex Printing
Duplex printing is the ability to print on both the front and back sides
of the printer paper. The Laserjet 3D and the Laserjet 3SI are the two
PCL (Printer Control Language) laser printers that support duplex
printing. These two printers also support simplex (one-sided) printing.
To use duplex printing on these printers, duplex printing must be
configured and enabled. Configuration consists of modifying an existing
printer type file so that Duplex Printer Mode is enabled. This is done
using the Workstation Configurator (TTUTIL.PUB.SYS). This printer type
file is then assigned to the printer in NMMGR. This allows the Terminal
I/O driver to send the Front-of-Page (FOP) escape sequence to the printer
when appropriate.
In the Workstation Configurator, the field before the question Does the
printer support duplex printing (Y, N), type Y to indicate that a printer
may be used as a duplex printer. To save this modification, press
[ENTER] and then the SAVE DATA function key.
Once configuration is complete the printer must be enabled for duplex
printing. Duplex printing can be enabled and disabled by sending escape
sequences to the printer. This can be done in three ways:
* Escape sequences can be embedded in the data file being printed.
* The printer type file can be modified to include the escape
sequence as part of the initialization string.
* The printer type file can be modified to include the escape
sequence as a Vertical Forms Control (VFC) string.
There are three escape sequences for duplex printing:
Table 9-1.
-----------------------------------------------------------------
| | |
| [ESC]&l1S - | Enable vertical binding duplex mode |
| | |
-----------------------------------------------------------------
| | |
| [ESC]&l2S - | Enable horizontal binding duplex mode |
| | |
-----------------------------------------------------------------
| | |
| [ESC]&10S - | Disable duplex mode (enable simplex mode) |
| | |
-----------------------------------------------------------------
The two duplex modes provide for the binding of the final document.
Vertical binding allows for binding a document along the physical length
of the page and horizontal binding allows for binding a document along
the physical width of the page. This is shown in Figure 9-1 , where
the dotted line (- - -) represents binding.
![[]](../../pic3k/M015956/FFN443c50.gif)
Figure 9-1. Duplex Mode Page Binding
In addition to the escape sequences mentioned above, the [RESET] escape
sequence ([ESC]) will also disable duplex mode and return the printer to
simplex mode. Therefore, the duplex mode escape sequences should be
entered after the [RESET] escape sequence in an initialization string.
Since the duplex mode escape sequences can be embedded within a data
file, it is possible for a printer configuration not to be in agreement
with how the printer is enabled.
To avoid this situation, close attention to detail during configuration
and use of escape sequences is required. When configuring simplex
printers, always indicate in the Printer Control screen of the printer
file that duplex printing is supported. Also, do not send duplex mode
escape sequences to simplex printers. When configuring duplex printers
for duplex printing, it is mandatory to indicate in the Printer Control
screen that duplex printing is supported. Duplex printing will not be
effective until the escape sequences are received by the printer.
Similarly, duplex printing will remain in effect until the Disable duplex
mode escape sequence is received or the [RESET] escape sequence is
received.
For detailed information on TTUTIL.PUB.SYS, refer to Customizing Terminal
Type Files and Printer Type Files with Workstation Configurator (P/N:
5959-2870).
For detailed information on the use of the escape sequences refer to the
technical reference manual provided with the printer.