HP Pcl 5 Manual

ENHorizontal Motion Index (HMI) Command 5-21
Example 
To print the printer’s resident 16.66 pitch Line Printer font at 17.75 cpi, 
send ?(s16.66H to select the Line Printer font, then send the 
command ?&k6.76H to change HMI. This value field is calculated 
as follows:
Each character then occupies 6.76/120 inch or 1/17.75 inch.
To use Courier 12 point (10 cpi) and print 80 characters across A4 
paper, requires adjusting the HMI value. The HMI value is calculated 
as follows:
*    This value was obtained...

5-22   Page Control CommandsEN
Vertical Motion Index (VMI) Command 
The Vertical Motion Index (VMI) command designates the height of 
the rows. (The vertical distance the cursor moves for a Line Feed 
operation.)
? & l # C
#  =   number of 1/48 inch increments between rows.
Default =8
Range =0 - Current logical page length up to a maximum of 32767
If the specified VMI is greater than the current logical page length, the 
command is ignored.
The value field is valid to 4 decimal places. A Ø in the value...

ENVertical Motion Index (VMI) Command 5-23
Common VMI Settings 
To print 66 lines per page on letter-size paper, in portrait orientation 
(with one-half inch top and bottom margins) send: 
?&l7.27C7.27 = (10/66) x 48
To print 66 lines per page on letter or legal-size paper, in landscape 
orientation (with one-half inch top and bottom margins) send:
?&l5.45C5.45 = (7.5/66) x 48 

5-24   Page Control CommandsEN
Line Spacing Command 
The Line Spacing command sets the number of lines printed per inch. 
Only the values listed below are valid.
? & l # D
#  =  1 -  1 lpi
  2 -  2 lpi
  3 -  3 lpi
  4 -  4 lpi
  6 -  6 lpi
  8 -  8 lpi
12 - 12 lpi
16 - 16 lpi
24 - 24 lpi
48 - 48 lpi
Default =6
Range =0,1,2,3,4,6,8,12,16,24,48 (Other values are ignored)
This command performs the same function as the Vertical Motion 
Index (VMI) command except that it identifies the VMI in 
lines-per-inch...

ENIntroduction  6-1
6
Cursor Positioning 
Introduction         
This section describes the cursor positioning commands.
Although the printer does not actually have a cursor, the PCL 
cursor position refers to the Current Active Position (CAP), like 
the blinking underline character (cursor) used on most 
computers. This “cursor” identifies the current position on the 
page; the pointer, where a printing command begins laying out 
page data. The cursor can be moved anywhere within the logical 
page using...

6-2   Cursor PositioningEN
Absolute vs. Relative Cursor Positioning      
Either absolute or relative motion can be specified.
Absolute motion always specifies the distance to move referenced 
from the top margin at the left bound of the logical page (0,0), 
regardless of the current active position (CAP) (see Figure 6-1). An 
unsigned value field in a cursor position command indicates absolute 
cursor movement.
Relative motion specifies the distance to move referenced from the 
current active position...

ENCursor Positioning Units 6-3
Cursor Positioning Units           
Cursor positioning is done in PCL coordinate system units. The units 
of the X-axis of the PCL coordinate system may be PCL Units, 
decipoints, or columns. The units of the Y-axis of the PCL 
coordinate system may be PCL Units, decipoints, or rows.
PCL Units 
The current unit size used in PCL Unit moves is determined by the 
value specified in the Unit of Measure command, defining the number 
of units-per-inch used in the following...

6-4   Cursor PositioningEN
Decipoints    
In PCL terminology, a decipoint is 1/720 inch or one-tenth of a PCL 
point (a PCL point is exactly 1/72 inch as opposed to a typographic 
point which is approximately 1/72 inch). 
Columns & Rows   
The width of a column is defined by the current horizontal motion 
index (HMI), as described under “Horizontal Motion Index (HMI) 
Command” in Chapter 5. The distance between rows is defined by the 
current vertical motion index (VMI), as described under “Vertical...

ENHorizontal Cursor Positioning (Columns) Command 6-5
Horizontal Cursor Positioning (Columns) 
Command 
This Horizontal Cursor Positioning command moves the cursor to a 
new column on the current line.
? & a # C
#  =   Number of Columns
Default =NA
Range =0 - logical page right bound (valid to 4 decimal places)
The width of a column is defined by the current HMI. 
NoteThe current unit of measure setting affects how HMI values are 
rounded. For example, if the unit of measure is set to 96 (one 
PCL Unit =...

6-6   Cursor PositioningEN
Horizontal Cursor Positioning (Decipoints) 
Command       
This Horizontal Cursor Positioning command moves the cursor to a 
new position along the horizontal axis.
? & a # H
#  =   Number of Decipoints (1/720 inch)
Default =NA
Range =0 - logical page right bound (rounded to the first decimal place)
A value field (#) with a plus sign (+) indicates the new position is to 
the right of and relative to the current cursor position; a minus sign (–) 
indicates the new position is to...