Compaq 5525B/31/32 Manual De Usuario
42
Chapter
2
Configuring the PCL-II Emulation with Control Codes
The ESC*b#Y escape sequence allows you to skip multiple adjacent blank
lines. The # of raster lines parameter is the decimal number of blank raster
lines to skip. The size of the blank raster line to be skipped is equivalent to the
currently set vertical raster graphics resolution. The advantage of using this
escape sequence over sending multiple raster data transfer escape
sequences containing blank raster lines is the escape sequence is processed
faster and the paper is moved faster.
lines. The # of raster lines parameter is the decimal number of blank raster
lines to skip. The size of the blank raster line to be skipped is equivalent to the
currently set vertical raster graphics resolution. The advantage of using this
escape sequence over sending multiple raster data transfer escape
sequences containing blank raster lines is the escape sequence is processed
faster and the paper is moved faster.
The ESC*rB sequence informs the printer that all the raster data has been
transferred.
transferred.
The following example illustrates how to send three lines of raster graphics to
the printer.
the printer.
ESC*rAESC*b2WDc
ESC*rA
Prepares printer for raster graphics
ESC*b2W Indicates two bytes of data to follow
D
D
First byte of graphics data
c
Second byte of graphics data
ESC*b2WL@
ESC*b2W Indicates two bytes of data to follow
L
L
First byte of graphics data
@
Second byte of graphics data
ESC*b2W$+ESC*rB
ESC*b2W Indicates two bytes of data to follow
$
$
First byte of graphics data
+
Second byte of graphics data
ESC*rB
Raster graphics complete
Many systems perform an automatic line feed after each line of data. The
system’s automatic line feed must be suppressed or else the raster lines will
not be adjacent to each other. A file equation which specifies the line length
(for example, RESC=-219) may be used to suppress the automatic line feed
along with carriage control directives, such as “+”.
system’s automatic line feed must be suppressed or else the raster lines will
not be adjacent to each other. A file equation which specifies the line length
(for example, RESC=-219) may be used to suppress the automatic line feed
along with carriage control directives, such as “+”.
Graphics files must be raster graphics files in the format described here in
order to print on the printer. To print vector graphics files, such as graphics
files created for plotters, a vector-to-raster conversion must be performed on
the data. (Vector-to-raster conversion is NOT a standard feature of the
printer.) Text and graphics cannot mix on the same line due to grid conflicts.
Raster graphics use 8-bit data.
order to print on the printer. To print vector graphics files, such as graphics
files created for plotters, a vector-to-raster conversion must be performed on
the data. (Vector-to-raster conversion is NOT a standard feature of the
printer.) Text and graphics cannot mix on the same line due to grid conflicts.
Raster graphics use 8-bit data.
Underlining
The ESC&dD sequence enables the automatic underlining mode. In this
mode, each printed character and space is underlined until the printer
receives an ESC&d@ sequence. The underline enhancement is disabled in
the default state. Underlining only affects forward horizontal movement such
as SP (space), DATA, or forward horizontal cursor moves; reverse
movements such as BS (backspace), CR (carriage return) and negative
horizontal cursor moves are not affected.
mode, each printed character and space is underlined until the printer
receives an ESC&d@ sequence. The underline enhancement is disabled in
the default state. Underlining only affects forward horizontal movement such
as SP (space), DATA, or forward horizontal cursor moves; reverse
movements such as BS (backspace), CR (carriage return) and negative
horizontal cursor moves are not affected.