Brother HL-1070 - B/W Laser Printer Technical Reference Manual page 138

2001/10/02
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;
Bits/value (#1, #2, #3)
Each value indicates a color as follows;
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)
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;
Range: -32767 ~ 32767
When the encoding mode is 2 or 3, this setting is valid.
n . n indicates bits/index. (n=4 à 2
Encoding Mode
0
1
2
3
#1: red
#2: green
#3: blue
n
Long Format
MSB
0 - 1 Format (0)
2 - 3 Bits / index
4 - 5 Bits / value #2
6 - 7
8 - 9
10 - 11
12 - 13
14 - 15
16 - 17
#1: red
#2: green
#3: blue
Bits/Index
0,1,2,3,4,5,6,7,8
1,2,4,8
1
8
-1. (Valid when the Encoding mode is 0 or 1.)
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