Brother International HL-1070 Technical Reference - Page 138
Long Format, Bits/index
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2001/10/02 ♣ Bits/index • Specifies the palette size at 2n. n indicates bits/index. (n=4 à 24=16 palettes) • 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/Index 0,1,2,3,4,5,6,7,8 1,2,4,8 1 8 ♣ 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 2n-1. (Valid when the Encoding mode is 0 or 1.) 2) Long Format MSB LSB 0 - 1 Format (0) Encoding mode 2 - 3 Bits / index Bits / value #1 4 - 5 Bits / value #2 Bits / value #3 6 - 7 White reference for value #1 8 - 9 White reference for value #2 10 - 11 White reference for value #3 12 - 13 Black reference for value #1 14 - 15 Black reference for value #2 16 - 17 Black reference for value #3 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. CHAPTER 3 "PCL5C" - 8
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