Quote:
Originally Posted by steve B
The typical black ink used in printing is some form of carbon -usually either lampblack or carbonblack - mixed with a hardening oil like linseed oil.
Being carbon IT DOES NOT FADE Not to blue, not to any other color. Not over time- carbon remains black essentially forever unless you've got enough heat and pressure to change it to its diamond form. And even then it may still be black.
It can be printed lightly and appear gray. Only because it does not have 100% coverage of the underlying material.
Steve B
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Good point.
Also, if it were simply a matter of some type of natural fading or light exposure, we would have seen many of these before fading from black old mill, black lenox, black tolstoi, etc.
JimB