2002.10.02 05:16 "Re: Error message with tiffcp", by Tom Lane
JPEGSetupEncode: BitsPerSample 1 not allowed for JPEG.
JPEG compression of the 1-bit image planes are not supported by the libtiff.
With good reason: JPEG is completely useless for 1-bit-per-pixel images.
You might have better luck with one of the fax-style compression methods (G3 or G4).
regards, tom lane
organizer, Independent JPEG Group