HP Pcl 5 Manual

ENUser-Defined Symbol Set Examples 10-15 Symbol Map Data:(continued)
00 cf (character code 5)  Solid Spade, Card Suit
MM
00 e7 (character code 31)  Down Solid Arrowhead
00 00 (character code 32)  Space Code
00 01 (character code 33)  Exclamation Mark
MM
00 22 (character code 65)  Uppercase A
MM
00 43 (character code 97)  Lowercase A
MM
01 4c (character code 252)  Superior Lowercase N
00 c5 (character code 253) Superior Numeral 2
01 31 (character code 254) Small Solid Square Box
00 00 (character code 255)...

10-16   User-Defined Symbol SetsEN 

ENIntroduction  11-1
11
Soft Font Creation 
Introduction 
A font that is downloaded (transferred) from a computer to 
a printer is called a soft font. A PCL soft font contains a font 
header and a set of character definitions. The font header 
and character definitions contain all the information needed 
to format a font for use in the HP LaserJet printers.
Every PCL font header begins with a font descriptor, which 
identifies the basic characteristics common to all characters of 
a font, such as font...

11-2   Soft Font CreationEN
The definition of a font with a quantity n characters would appear as 
shown below.
Font Classifications      
There are three basic classifications of fonts accepted by the 
HP LaserJet printer: PCL bitmap, Intellifont scalable, and 
TrueType scalable. Several different font header and character 
descriptor formats are available for the different font classifications. 
All are presented in this chapter.
NoteNot all font classifications are supported in all HP LaserJet Family...

ENIntroduction 11-3 TrueType scalable fonts are described in detail in the document, Tr u e  
Ty p e  F o n t  F i l e s. (Refer to Related Documents, located in the front of 
this manual, for information on how to obtain this document.)
NoteThe documents, Intellifont Scalable Typeface Format and True Type 
Font Files do not contain descriptions of scalable PCL fonts. Instead, 
they contain descriptions of files from which PCL fonts can be built. 

11-4   Soft Font CreationEN
Coordinate System 
Both bitmap and scalable characters are designed in an area referred 
to as a cell or window, and each has its own coordinate system and 
set of units.
Bitmap Fonts   
Characters of a bitmap font are designed within a rectangular area 
referred to as a cell. The bitmap character cell is illustrated in Figure 
11-3, Figure 11-6, and Figure 11-7. The physical coordinate system is 
defined in terms of the directions of raster scan (X) and paper motion 
(Y), as...

ENCoordinate System 11-5 The master font design size is 250 points (a CG point=.01383 
inches). There are 8782 units per Em at the Master Font Size.
Figure 11-2 Agfa Design Window
TrueType Scalable Fonts      
TrueType scalable font character coordinates are typically based 
on a system of 2048 units per Em. The baseline is defined by 
y-coordinate=0. The left reference is usually defined by 
x-coordinate=0 (although there is some variation among fonts). 
To determine the left reference line for an...

11-6   Soft Font CreationEN
Font Header Command 
The Font Header command is used to download font header data to 
the printer.
E
C ) s # W   [font header data] 
Default =0
Range =0 - 32767
The value field (#) identifies the number of bytes in the font header. 
The font header fields are described under Font Header Format, later 
in this chapter.
NoteTwo examples for downloading a Font Header are provided under 
Font Header Examples, after the Font Header Format section, later in 
this chapter.
Font...

ENFont Header Format 11-7
NoteUse the Font ID command to designate a unique ID number prior to 
the download of a font header. If an existing font is already associated 
with this ID, the existing font is deleted upon the download of the font 
header. Unless otherwise specified, inappropriate values in a font 
header field invalidates the font download process; a font is not 
created and the associated font data is discarded. 
Intellifont scalable font formatting also requires the Intellifont Scalable...

11-8   Soft Font CreationEN
16 Pitch (Default HMI)
18 Height
20 x-Height
22  Width Type  Style LSB
24 Stroke Weight  Typeface LSB
26 Typeface MSB  Serif Style
28 Quality  Placement
30  Underline Position (Distance)  Underline Thickness 
(Height)
32 Text Height
34 Text Width
36 First Code
38 Last Code
40  Pitch Extended  Height Extended
42 Cap Height
44-47 Font Number
      M
48-63 Font Name
      M
64 Copyright (optional)
Table 11-3 Format 20 Font Header (for Resolution-Specified 
Bitmapped)
Byte  15...