Brother HL Series Technical Reference Manual page 104

7/17/2009
Byte
position
0 - 1
2 - 3
4 - 7
8 - 11
12 - 13
14 - 15
16 - 19
20 - 21
22 - 55
56 - 59
60 - 61
62 - 63
64 - 65
66 - 67
68- 69
71 - 71
72 - 73
74 - 75
76 - 77
78 - 79
80 - 81
82 - 83
84 - 85
86 - 87
88 - 89
90 - 91
92 - 93
For further information about the CCITT G3/G4 data format, please refer to CCITT (The International
Telegraph and Telephone Consultative Committee) BLUE BOOK Volume VII.
Data Description
6E 6E 'nn' This is header ID.
0A 00 Reserved
5E 00 00 00 Picture data start offset from header top
File length File length including 94 Byte header. If file length is 65,536 byte,
these 4 bytes become "00 00 01 00"
01 00 Reserved
01 00 Reserved
4A 00 00 00 Reserved
Compression mode 02 00: Fax MH format
03 00: Fax MR format
04 00: Fax G4 format
00 ... 00 All zero
Picture data length If picture data length is 65,442 (65,536 ~-94) byte, these 4 bytes
become "A2 FF 00 00."
01 00 bit / pixel
01 00 bit / pixel
Pixels/line If picture dot width = 2,400, these 2 bytes become "60 09"
Pixels/line Same as above.
Lines/picture If picture dot count = 3,100, these 2 bytes become "1C 0C."
Lines/picture Same as above.
00 00 Reserved
Photometrics 00 00 00 00 : data 0 = white
or 01 00 01 00 : data 0 = black
02 00 Reserved
Fill order 01 00 or 01 00 : filled from MSB
02 00 02 00 : filled from LSB
01 00 Reserved
00 00 Reserved
01 00 Reserved
Resolution 200, C8 00 00 00 : 200 dpi,
300, 400, 600 90 01 00 00 : 400 dpi,
400 and 600 dpi are available when the printer operates in 600 dpi
mode.
Resolution 200, C8 00 00 00 : 200 dpi,
300, 400, 600 90 01 00 00 : 400 dpi,
400 and 600 dpi are available when the printer operates in 600 dpi
mode.
02 00 Reserved
00 00 Reserved
CHAPTER 2 "PCL" - 84
2C 01 00 00 : 300 dpi,
58 02 00 00 : 600 dpi
2C 01 00 00 : 300 dpi,
58 02 00 00 : 600 dpi