Bit Field ; Designated Use ; MSL Symbol Index - Page 92

CHAPTER 2 PCL - 72 

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Font number (ULI) - ignored by these HL Series printers. This 4-byte field specifies the number assigned to 
the font by the vending company. The number is stored as a hexadecimal value in the lower three bytes, 
bytes 44, 45 and 46. 



Font name (16 bytes) - ignored by these HL Series printers. This 16-byte field can be used to specify a name 
for the font. 



X-Resolution (UI) - specifies the resolution in the X-scan direction. 
This value can be 300 or 600 for bitmap fonts, and is normally set to 2540 for Intellifont scalable fonts.  This 
is used for scaling the X-coordinates of font data to the required point size. 
After scaling ( in dots ) =  
  

(300 

x

 the required point size 

x

 X-coordinate) / {72.307 

x

 scale factor (8782)} 

After scaling ( in dots )  =  
  

(300 

x

 the required point size 

x

 X-coordinate) / {Master X-resolution 

x

 (Height / 8) } 



Y-Resolution (UI) - specifies the resolution in the Y-scan direction. 
This value should be set to 300 or 600 dpi for special bitmap fonts and is not available for Bitmap fonts and 
TrueType fonts. 
This is normally set to 2540 for Intellifont -scalable fonts and is used for scaling the Y-coordinates of the 
font data to the required point size.   
This value is calculated as: 
After scaling ( in dots ) = (300 

x

 the required point size 

x

 Y-coordinate) / (72.307 

x

 scale factor (8782) ) 

After scaling ( in dots ) = (300 

x

 the required point size 

x

 Y-coordinate) /  

{Master Y-resolution 

x

 (Height / 8)} 



Scale Factor (UI) - specifies the number of design units per Em.  This value can be the unit for the metrics of 
Intellifont / TrueType scalable fonts. 
This is normally set to 8782 and is calculated for Intellifont as follows: 



Scale factor 

x

 72.307 = resolution 

x

 height / 8 



This is normally set to 2048 for TrueType fonts. 



Master Underline position (UI) - Specifies the distance from the baseline to the top of the underline in design 
units and this is an alternative for "Underline Position (bit 30)" only for scalable fonts. 



Master Underline height (UI) - specifies the height of the underline itself in design units and this is an 
alternative for "Underline Thickness (bit 31)" only for scalable fonts.   



Font Scaling Technology (UB) - specifies the type of font scaling technology for any scalable fonts. 



Variety (UB) -  only for TrueType fonts,  this value should be set to 0. 



OR (LRE) Threshold (UI) - specifies the pixel size in design units. This is switched on between scaling the 
font and its rasterization. 



Global Italic Angle (SI) - specifies the italic angle as a tangent relative to the vertical.  The value 0 makes 
upright fonts. 



Global Intellifont Data Size (UI) - indicates the size of the global Intellifont data block. 



Global Intellifont Data - includes the global intellifont data. 



Character Complement (Array of UB) - identifies the symbol set compatibility for unbound fonts used with 
the Character Requirement flag in the symbol set descriptor. 

MSL Symbol Index 

Bit Field 

Designated Use 

58 - 63 
55 - 57 
52 - 54 
50 - 51 
48 - 49 
3 - 47 
 
0 - 2 

Reserved for Latin fonts. 
Reserved for Cyrillic fonts. 
Reserved for Arabic fonts. 
Reserved for Greek fonts. 
Reserved for Hebrew fonts. 
Miscellaneous uses (South Asian, Armenian, other alphabets,  
bar codes, OCR, Math, PC Semi-graphics, etc.) 
Symbol Index field.  111 - MSL Symbol Index