B.2.2 Page header
Parameter | Type | Comment |
PageHeaderID | byte | 254 (Page data record type) |
PageHeaderLen | byte | 0: Document end |
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| 1...255: byte offset of first page data from the Resolution |
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| Vertical field of the page header. This value is normally equal |
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| to the size of the remainder of the header (0x10), but there |
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| could be additional |
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| and page data. |
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| provide such additional data. |
Resolution Vertical | byte | Definition of vertical resolution; different resolutions in one |
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| document may be ignored by |
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| 0: 98 lpi (standard) |
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| 1:: 196 lpi (high resolution) |
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| 2...254: reserved |
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| 255: end of document (should not be used: PageHeaderLen |
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| should be coded 0 instead) |
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| If FAX paper formats and resolutions are enabled |
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| 0x00: 98 lpi (3.85 lines per millimeter) |
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| 0x01: 196 lpi (7.7 lines per millimeter) |
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| 0x02..0x7f: reserved |
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| 0x80: reserved |
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| 0x81: 100 lpi |
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| 0x82: reserved |
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| 0x83: 200 lpi |
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| 0x84: reserved |
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| 0x85: 300 lpi |
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| 0x86: 392 lpi (15.4 lines per millimeter) |
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| 0x87: 400 lpi |
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| 0x88..0x8a: reserved |
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| 0x8b: 600 lpi |
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| 0x8c..0x8e: reserved |
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| 0x8f: 800 lpi |
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| 0x90..0x96: reserved |
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| 0x97: 1200 lpi |
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| 0x98..0xff: reserved |
Resolution Horizontal | byte | Definition of horizontal resolution |
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| 0: 203 dpi (standard) |
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| 1...255: reserved |
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| If FAX paper formats and resolutions is enabled |
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| 0x00: 203 dpi (R8, 8 pels per millimeter) |
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| 0x01..0x7f: reserved |
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| 0x80: reserved |
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| 0x81: reserved |
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| 0x82: reserved |
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| 0x83: 200 dpi |
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| 0x84: reserved |
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| 0x85: 300 dpi |
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| 0x86: 406 dpi (R16, 16 pels per millimeter) |
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| 0x87: 400 dpi |
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| 0x88..0x8a: reserved |
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| 0x8b: 600 dpi |
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| 0x8c..0x96: reserved |
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| 0x97: 1200 dpi |
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| 0x98..0xff: reserved |
Coding | byte | Definition of pixel line coding |
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| 0: modified Huffman coding |
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| 1...255: reserved |
reserved | byte | Coded as 0 |
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| 9 |