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