[pure-silver] Re: Speaking Of Ortho - Black Skies Sought
- From: Jean-David Beyer <jeandavid8@xxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Thu, 02 Jul 2015 08:37:54 -0400
On 07/02/2015 07:39 AM, Snoopy wrote:
WOW now that really is DEEPLY COOL ancestry !!
I think so.
F.E.Ives also invented the process of printing photographs in books,
magazines, and such on both letter press and gravure. You know all those
little dots? He invented three different ways to do this in the late
1800's. He patented the first two, only to get the patents infringed.
Difficult to enforce. So the third process was kept as a trade secret at
the request of his financial backer. That proved to be a mistake. A
competitor hired away one of my great grandfather's workers and it was
not a trade secret anymore.
https://en.wikipedia.org/wiki/Frederic_Eugene_Ives
Love,
Snoopy
On 01.07.2015 02:46, Jean-David Beyer wrote:
Ages ago (late 19th century -- 1879) my great grandfather (F. E. Ives)
tried to sensitize the blue-violet sensitive film to longer wave
lengths, because he was trying to invent color photography. I mean it
was known in theory several ways of doing it, but the problem was to
make plates sensitive to all the visible colors.
--
.~. Jean-David Beyer Registered Linux User 85642.
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