Brother HL-1050 Technical Reference Manual page 144

♣ Bits/index
 Specifies the palette size at 2
 When the encoding mode is 0 or 1, the palette size selected by the bits/index value specifies the range of the
index No., which can be used for raster data.
 The values specified by the encoding mode are listed below;
Encoding Mode
0
1
2
3
♣ Bits/value (#1, #2, #3)
Each value indicates a color as follows;
#1: red
#2: green
#3: blue
 When the encoding mode is 0 or 1, it ignores this setting. The black/white reference, described later, is set.
 When the encoding mode is 2, it shows the number of planes that are required to send each color.
 When the encoding mode is 3, it shows the number of bits that are required to send each color.
 It sets the black reference to 0. (Valid when the Encoding mode is 0 or 1.)
 It sets the white reference to 2
2) Long Format
MSB
0 - 1
2 - 3
4 - 5
6 - 7
8 - 9
10 - 11
12 - 13
14 - 15
16 - 17
The long format allows you make the setting of the white/black reference in addition to the ones available in the
short format.
♣ White reference for value #1, #2, #3
 This mode specifies the white value (the lowest level of density).
 Each value indicates a color as follows;
#1: red
#2: green
#3: blue
Range: -32767 ~ 32767
 When the encoding mode is 2 or 3, this setting is valid.
n . n indicates bits/index. (n=4  2
Bits/Index
0,1,2,3,4,5,6,7,8
1,2,4,8
1
8
n
-1. (Valid when the Encoding mode is 0 or 1.)
Format (0)
Bits / index
Bits / value #2
White reference for value #1
White reference for value #2
White reference for value #3
Black reference for value #1
Black reference for value #2
Black reference for value #3
CHAPTER 3 PCL5C - 8
4 =16 palettes)
LSB
Encoding mode
Bits / value #1
Bits / value #3