Panasonic Panafax DX-2000, Service Manual

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10.7.4 File Format for Internet Fax
Sending Internet Fax devices must be able to write minimum set TIFF files, according to the rules for creating minimum set TIFF
files defined in TIFF for Facsimile (the S profile) [RFC2301], which is also compatible with the specification for the minimum subset
of TIFF-F in [RFC2306]. Receiving Internet Fax devices MUST be able to read minimum set TIFF files.
The Following tree diagram shows the relationship among profiles and between profiles and coding methods.
A profile is based on a collection of ITU-T facsimile coding methods.
10.7.5 Minimal Set
The minimum interchange set of TIFF fields that must be supported by all implementations in order to assure that some form of an
image, albeit black-and-white, can be interchanged. The table below summarizes the TIFF fields that comprise the minimal
interchange set for black-and-white facsimile. The Baseline and Extenuation fields and fields values must be supported by all
implementations.
Class Color Coding method Remarks
S B/W MH Internet Fax minimal set
F B/W MMR, MR Internet Fax full mode
J B/W JBIG Internet Fax mixed mode
C Color JPEG
(lossy) Color minimal set
L Color JPEG
(lossless, grayscale) One bit per color,palletized color image, continuos tone color and grayscale
images
M Color Mixed Raster Content Multiple coders and resolution within a page
Baseline Fields Values
Bits Per Sample 1
Compression 3:1 dimension MH coding set T4 Options = 0 or 4
Fill Order Least significant bit first
Image Width 1728 (A-4)
Image Length N: total number of scan lines in image
New Sub File Type 2: Bit 1 identifies single page of a multi-page document
Page Number N,m: page number n followed by total page count m
Photometric Interpretation 0: pixel value 1 means black
Resolution Unit 2: inch
Rows Per Strip Number of scan lines per strip = Image length, with one strip
Samples Per Pixel 1
Strip Byte Counts Number of byte in TIFF strip
Strip Offsets Offsets from beginnings of file to single TIFF strip
X Resolution 204, 200 (pixels/inch)
Y Resolution 98, 196, 100, 200 (pixels/inch)
Extensions Fields
T4 Options
0: MH coding, EOLs not byte aligned
4: MH coding, EOLs byte aligned
S (MH)
C (JPEG)
L (JPEG) M (MRC)
J
(JBIG)
F
(MMR, MR)
B/W
Color
MRC: Mixed Raster Content