Brother HL-Series Technical Reference Manual page 72

Revision C 16/01/96
• Quality (UB) - ignored by this HL Series printer. This byte specifies the fonts quality according to the
following table.
Value
0
1
2
• Placement (SB) - ignored by this HL Series printer. This byte specifies the placement of characters relative to
the baseline according to the following table.
Value
1
0
–1
• Underline distance (SB) -
Bitmapped fonts - the distance in dots from the baseline to the underline. A positive value places the underline
above the baseline, a negative value places it below the baseline. A value of 0 places it on the baseline.
Scalable fonts - ignored by this printer. This value should be set to 0.
• Underline height (UB) - the height of underline itself.
Bitmapped fonts - this value is fixed at 3 dots.
Scalable fonts - ignored by this printer. This value should be set to 0.
• Text height (UI) - ignored by this HL Series printer.
This word specifies the spacing between successive lines of text in 1/4 dots for bitmapped fonts and in design
units for scalable fonts. This is normally about 1.2 times the fonts height.
• Text width (UI) - ignored by this HL Series printer.
This word specifies the average width of the fonts lowercase characters in 1/4 dots for bitmapped fonts and in
design units for scalable fonts.
• First code (UI) - ignored by this printer. This word specifies the character code of the first (lowest numbered)
printable character in the font.
• Last code (UI) - specifies the character code of the last (highest numbered) character in the font. If this value
is less than 255, it is recognized as 00FFH.
• Pitch extended (UB) - the fractional part of the character pitch. For a 17 cpi font the bytes value would be
calculated as follows:
( According to HP's manual, this should be set to 0.) This printer ignores the value for scalable fonts.
• Height extended (UB) - the fractional part of the height of the font. For a 10 point font the bytes value would be
calculated as follows:
1200 X 10/72 = 166.667, the Height byte takes the value 166
Height Extended = 0.667 X 256 = 170 (rounded down).
Point size = (character height x 256 + extended character height) x 300 / (72 x 1024)
( According to HP's manual, this should be set to 0.) This printer ignores the value for scalable fonts.
Quality
Data processing
Near letter quality
Letter quality
Placement
Superior
Normal
Inferior
- 1200/17 = 70.588
- Pitch Extended = 0.588 X 256 = 150 (rounded down).
Chapter 2 "PCL" - 57
The Pitch byte takes the value 70.