[Poppler-bugs] [Bug 46600] [patch] pdftops git 25Feb12 restore deleted binary code and level2sep fixed

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Feb 26 15:32:17 PST 2012


https://bugs.freedesktop.org/show_bug.cgi?id=46600

--- Comment #13 from William Bader <williambader at hotmail.com> 2012-02-26 15:32:17 PST ---
> why if c=m=y > 0 and k=0 looks gray on a screen would not look gray when printed?

In theory, it should look gray, but in practice, the mixture of dots of the
different inks doesn't absorb colors the same way that real black ink does.
Also, you have issues with registration.  The web must pass through a cylinder
for each color, and it is hard to keep everything synchronized to the size of a
dot (newspapers typically print at 1024 dpi), so the c, m and y dots are never
in perfect alignment.  Small text in cmy instead of k can be hard to read due
misalignments.
http://en.wikipedia.org/wiki/CMYK
http://en.wikipedia.org/wiki/Gamut

William

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