(RCSD) Re: Cinderella: Stamp images by photo gelatin.

On Apr 23, 4:36 am, Rein <dzie...@[EMAIL PROTECTED]
> wrote:
> Rodney,
>
> this type of printing was very common in the 1930-1965 period in the
USSR;
> several hundreds of stamps were printed that way. The earliest stamp in
> "Lichtdruk"  or "phototypia" is a commemorative stamp of Bulgaria around
> 1908 printed in Budapest. The Russian stamps all originate from the
Goz****
> Printing Works in Moscow.
>
> groetjes, Rein
>
> Op Wed, 23 Apr 2008 08:52:16 +0200 schreef rodney
> <pookiet...@[EMAIL PROTECTED]
>:
>
>
>
> > GB 1950 Waterlow.
> >http://cjoint.com/data/exiU062hcv.htm
>
> > The collotype process was used between about 1870 and 1920. A glass
plate
> > was coated with sensitised gelatin and exposed under a negative. Light
> > passed through the negative would harden the gelatin on the glass
plate.
> > The
> > unexposed gelatin would absorb the water when washed and the exposed
> > would
> > repel it. The washed glass plate would be coated with ink, adhering to
> > the
> > exposed gelatin and printed onto fine paper.
>
> > "Collotype: seldom used with stamps"
>
> > Anybody aware which stamps may have used this process?
>
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