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3-8 The Print Environment EN
Resetting the Print Environment
Resets are used to return the printer to a known environment.
Depending on the type of reset performed, the printer returns to either
the User Default Environment or the Factory Default Environment.
Printer Reset
A Printer Reset restores the User Default Environment and deletes
temporary fonts, macros, user-defined symbol sets, and patterns. A
Printer Reset is performed by sending the
E
C
E command, or through
the printer’s control panel (see the printer User’s Manual). The Printer
Reset command is described in Chapter 4, PCL Job Control
Commands.
The
E
C
E command prints any partial pages of data that may have
been received. The control panel [RESET] discards any formatted
pages which have not yet been printed.
Both resets (
E
C
E and the control panel [RESET] ) return the
HP-GL/2 settings to their default values.
E
C
E used in HP-GL/2 mode
returns the printer to PCL mode in addition to resetting the print
environment. The HP-GL/2 IN (Initialize) command resets HP-GL/2
settings to their default values without affecting the PCL settings
(refer to the Initialize command described in Chapter 19, The
Configuration and Status Group, for additional information).
Notes Hewlett-Packard strongly recommends the use of both the
E
C
E
command and the
E
C
%–12345X command (Universal Exit
Language/Start of PJL — also referred to as the UEL Command) at
the beginning and end of each job. (The order of these commands is
critical. Refer to Table 4-1 for an example of their usage.)
The UEL Command (
E
C
%–12345X) has the same effect as the
E
C
E
command, and also enters PJL Mode of operation for printers that
support PJL (refer to “Universal Exit Language Command” in Chapter
4 for more information). The
E
C
E command should be included to
ensure backward compatibility (the UEL command is ignored if
received by a printer that does not support PJL).