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

EN Raster Height Command 15-11

Raster Height Command

The Raster Height command specifies the height in raster rows of the

raster area. Height is the direction perpendicular to the direction that

raster rows are laid down, hence, height is subject to the current

raster presentation mode and print direction (see Figure 15-7).

* r # T

# = Height in raster rows

Default = N/A

Range = 0 to (logical page length – current Y-position of the

0,cursor)

Greater values default to (logical page length – current Y-position of the cursor)

This command fills the raster area to the full raster height with zeroed

rows. Unspecified rows map to either white or transparent depending

on the source transparency mode.

When a Transfer Raster Data command is received that causes

any raster row to extend beyond the row boundary set by the Raster

Height command, the row outside the boundary is clipped. This

includes the case where the cursor is moved beyond the height

boundary with a Raster Y Offset command and the printing of raster

data is attempted.

If you have specified either a raster height or a raster width of 0

and a Start Raster Graphics (or Transfer Raster Data) command is

received, then the entire raster graphic is clipped. If both a raster

height and a raster width are specified (non-zero) and a Start Raster

Graphics (or Transfer Raster Data) command is received then the

raster area is guaranteed to be logically zeroed-out.

If the raster height is not set, the raster height is ignored so that no

padding or clipping of rows takes place.

This command is ignored after the Start Raster Graphics or Transfer

Raster Data commands until the next End Raster Graphics

command.

Note Only raster data appearing within the intersection of the logical page,

the printable area, and if set, the raster width and height is printed.

Data outside the intersection is clipped.