HP d640 HP D640 High-Volume Printer - Technical Reference Manual, C5630-90030 - Page 19

CCITT Groups 3 and 4 Decompression, If you combine the PJL SET COPIES and PJL SET QTY commands

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If you combine the PJL SET COPIES and PJL SET QTY commands in the same print job (and the auto-collate setting on front of the printer is off), the result is multiplicative. See illustration below. 1 2 3 PJL SET COPIES = 2 PJL SET QTY = 3 3 sets of documents are created. Each set has 2 copies of each page. 1 1 2 2 3 3 1 1 2 2 3 3 1 1 2 2 3 3 This combination of copies and mopies is useful if you're simulating a multi-part form on the printer and you want multiple copies of the form. CCITT Groups 3 and 4 Decompression The D640 printer supports CCITT Groups 3 and 4 image decompression, commonly used for faxing data and images. You can send the printer these printer-specific commands and data compressed using CCITT Groups 3 and 4. The printer decompresses and prints the data. Three new modes for transfer raster data are supported: *b#M l 6 - CCITT G3 one-dimensional (modified Huffman) l 7 - CCITT G3 two-dimensional (modified Read) l 8 - CCITT G4 two-dimensional (modified Read) The first four bytes of this command are a 32-bit unsigned integer that specifies the number of pixels per row. If these bytes are inadvertently transposed, the image may appear to be one long row of pixels. Most standard PCL5 raster image commands, excluding Y offset *b#Y commands, work with the new printer-specific command extensions. Chapter 2: Printing Options 13

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Chapter 2: Printing Options
13
If you combine the PJL SET COPIES and PJL SET QTY commands
in the same print job (and the auto-collate setting on front of the
printer is off), the result is multiplicative. See illustration below.
This combination of copies and mopies is useful if you’re simulating a
multi-part form on the printer and you want multiple copies of the
form.
CCITT Groups 3 and 4 Decompression
The D640 printer supports CCITT Groups 3 and 4 image
decompression, commonly used for faxing data and images. You can
send the printer these printer-specific commands and data
compressed using CCITT Groups 3 and 4. The printer decompresses
and prints the data.
Three new modes for transfer raster data are supported:
<ESC>*b#M
l
6 - CCITT G3 one-dimensional (modified Huffman)
l
7 - CCITT G3 two-dimensional (modified Read)
l
8 - CCITT G4 two-dimensional (modified Read)
The first four bytes of this command are a 32-bit unsigned integer that
specifies the number of pixels per row. If these bytes are inadvertently
transposed, the image may appear to be one long row of pixels.
Most standard PCL5 raster image commands, excluding Y offset
<ESC>*b#Y commands, work with the new printer-specific command
extensions.
1
1
2
2
3
3
1
2
3
PJL SET COPIES = 2
PJL SET QTY = 3
3 sets of documents are created.
Each set has 2 copies of each page.
1
1
2
2
3
3
1
1
2
2
3
3