HP d640 HP D640 High-Volume Printer - Technical Reference Manual, C5630-90030 - Page 36

FF, Short

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Table 8 Baseline TIFF Definitions * RowsPerStrip The number of rows per strip. The default is the value given by 0116,Short/Long,1 ImageLength resulting in a single-strip image. Image data may be broken into a number of strips or bands. However, for the D640 printer, single strips are preferable. The value of RowsPerStrip together with the value of ImageLength determines the number of strips in the image: StripsPerImage = ImageLength/RowsPerStrip (rounded up) Default = ImageLength (single strip). *SamplesPerPixel The number of components per pixel. 0115,Short,1 Any value other than 1 is treated as an error. Default = 1. Software Name and version number of the software package used to 0131,ASCII create the image. ** StripByteCounts 0117,Short/ Long,StripsPerImage For each strip, the number of bytes in the strip after compression. This field is mandatory, except for uncompressed data, where it can be computed from ImageWidth and RowsPerStrip. ** StripOffsets 0111,Short/ Long,StripsPerImage For each strip, the byte offset of that strip. As with other offsets, the offsets are specified with respect to the beginning of the TIFF file. For the D640 printer, HP recommends, they be in ascending sequence and do not have a value less than the file position of the offset. SubfileType An indication of the kind of data contained in this sub-file. 00FF,Short,1 Recognized but not used (obsolete). Threshholding For black and white TIFF files that represent shades of gray, the 0107,Short,1 technique used to convert gray to black and white pixels. 30 Chapter 3: Working with TIFF Images

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30
Chapter 3: Working with TIFF Images
* RowsPerStrip
0116,Short/Long,1
The number of rows per strip. The default is the value given by
ImageLength resulting in a single-strip image.
Image data may be broken into a number of strips or bands.
However, for the D640 printer, single strips are preferable.
The value of RowsPerStrip together with the value of
ImageLength determines the number of strips in the image:
StripsPerImage = ImageLength/RowsPerStrip (rounded up)
Default = ImageLength (single strip).
*SamplesPerPixel
0115,Short,1
The number of components per pixel.
Any value other than 1 is treated as an error.
Default = 1.
Software
0131,ASCII
Name and version number of the software package used to
create the image.
** StripByteCounts
0117,Short/
Long,StripsPerImage
For each strip, the number of bytes in the strip after compression.
This field is mandatory, except for uncompressed data, where it
can be computed from ImageWidth and RowsPerStrip.
** StripOffsets
0111,Short/
Long,StripsPerImage
For each strip, the byte offset of that strip.
As with other offsets, the offsets are specified with respect to the
beginning of the TIFF file. For the D640 printer, HP recommends,
they be in ascending sequence and do not have a value less than
the file position of the offset.
SubfileType
00FF,Short,1
An indication of the kind of data contained in this sub-file.
Recognized but not used (obsolete).
Threshholding
0107,Short,1
For black and white TIFF files that represent shades of gray, the
technique used to convert gray to black and white pixels.
Table 8
Baseline TIFF Definitions