HP PCL/PJL reference (PCL 5 Printer Language) - Technical Reference Manual Part II

18-8 The Picture Frame EN
Note If you have a page size-independent HP-GL/2 image, there is no need
to set plot size, otherwise it is good practice to set plot size.
The commands that allow you to set up a PCL Picture Frame and
enter/exit HP-GL/2 mode are discussed in detail in the rest of this
chapter. By reading the following command descriptions, you can see
how changing command parameters can affect your printed output.
Horizontal Picture Frame Size
This PCL command specifies the horizontal dimension of the window
to be used for printing an HP-GL/2 plot.
E
C
* c # X
# =Horizontal size in decipoints (1/720th inch)
Default = width of the current logical page
Range = 0 - 32767 (valid to 4 decimal places)
Note The horizontal dimension specified is parallel to the PCL X-axis
when the print direction is set to 0 degrees (the default).
Using this command defaults the location of P1 to the lower left
corner of the picture frame, and P2 to the upper right corner of the
picture frame. It also resets the soft-clip window to the PCL Picture
Frame boundaries, clears the polygon buffer, and updates the
HP-GL/2 pen position to the lower-left corner of the picture frame
(P1), as viewed from the current orientation.
If no horizontal picture frame size command is used, the printer
defaults the picture frame size to the logical page width. A parameter
value of 0 or the PCL reset, UEL, page length, paper size, or
orientation commands default the horizontal picture frame size.
If an HP-GL/2 plot size is specified, the horizontal picture frame size
is used to determine the horizontal scaling factor used for scaling the
image to fit in the picture frame.