2012.04.11 09:48 "[Tiff] tiff2pdf fit image to page - how does it scale?", by David E. Meier

2012.04.11 22:38 "Re: [Tiff] tiff2pdf fit image to page - how does it scale?", by James Cloos

Some fax software -- and perhaps some fax hardware -- prepends the header to each page rather than overlaying the header on top of the first so many mm of each page.

I suspect your tiff has been through such an xform.

All a4, letter and legal faxes should be 1728 pixels wide, which is approx 104 dpi wide.

A4 paper is 595.27559 x 841.88976 (ps/pdf) points. IIRC, low and high res faxes are 98 and 196 dpi tall. 841.88976 * 196 / 72 = 2291.81, which suggests that your fax is about 30 pixels (11 pt; 3.9 mm) too tall. That suggests the header was prepended instead of overlaid.

It looks like the /mm numbers are 3.85/mm and 7.70/mm; that would mean an a4 page should be 297.0 * 7.7 = 2287 pixels, making you tiff 35 px too tall, or 4.55 mm. Still about right for a prepended header line.

-JimC
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James Cloos <cloos@jhcloos.com>         OpenPGP: 1024D/ED7DAEA6