/usr/share/doc/libsane/umax/negative-types.txt is in libsane-common 1.0.25+git20150528-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 | Negative ---- highlight ---- ------ shadow ------
Type red green blue red green blue
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standard 66% 33% 16% 7% 1% 0%
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fuji 64% 33% 16% 7% 1% 0%
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kodak 54% 18% 12% 9% 2% 0%
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konica 38% 21% 14% 3% 0% 0%
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agfa 61% 24% 13% 6% 2% 0%
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