RE: Photogravure question

Not to split hairs too finely, but the "etching" is performed by the
water rinse (sometimes aided by a soft bristle brush), the plate is
hardened by exposure to light... again a similarity to photogravure,
not a difference. Here water replaces the acid in creating the pits of
the plate.

Darryl

-----Original Message-----
From: Kate Mahoney [mailto:kateb@paradise.net.nz]
Sent: Mon 11/3/2003 1:11 PM
To: alt-photo-process-l@sask.usask.ca
Subject: Re: Photogravure question
 
Polymer gravure IS an intaglio process - it produces an incised plate
and
the ink is applied just as in an etching. The difference is that the
plate
is etched by light rather than by acid, so in a way it's a really
photographic process.

Kate Mahoney
----- Original Message -----
From: "Greg Schmitz" <gws1@columbia.edu>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Tuesday, November 04, 2003 3:42 AM
Subject: Re: Photogravure question

I don't discount that it is possible to pull some very nice prints
from photopolymer plates. I would question if any process should be
called Gravure unless it is an intaglio printing process. Calling a
process, which is not an intaglio process, "Photogravure" is
misleading although calling it such would have some "retro" appeal
(good marketing hook). If it is possible to use photopolymer plates
so as to produce a plate that prints in the same manner as a Gravure
plate then I will have no problem calling it a Gravure process;
otherwise the terminology is just plain wrong.

-greg schmitz <gws1@columbia.edu>

On Mon, 3 Nov 2003, Jalo Porkkala wrote:

> Hello List,
>
> for all those thinking polymer gravure is not "real" photogravure a
couple
of web sites to visit. Polymer gravure has been practitioned in
Scandinavia
well over 10 years now, and the results can be stunning ...
>
> http://www.psy.ku.dk/ross/
> http://www2.uiah.fi/~teofilus/
> http://www.photoeye.com/templates/ShowDetailsbyCat.cfm?Catalog=ZB305
>
> Jalo
>
>
> jack reisland kirjoitti 02.11.2003 kello 21:29:
> >
> >
> > "Gordon J. Holtslander" wrote:
> >
> > >
> > > Are the resulting prints from photopolymer plates and
traditional
> > > photogravure sigificantly different?
> > >
> > > Gord
> > >
> >
> > Yes, indeed they are. Photopolymer etching is a two dimensional
process,
> > where
> > the variation in tone is acheived by spacing the ink closer or
farther
> > apart,
> > much like an ink jet print. Copper plate photogravure adds a 3rd
> > dimension,
> > by
> > also varying the depth of the cells, or holes etched into the
copper
> > plate,
> > and
> > thereby varying the thickness of the ink applied to the paper.
This
> > results
> > in a
> > richness and depth in the image, especially in the darker tones,
that
> > cannot be
> > matched by photopolymer plates.
> >
> > J. Reisland
> >
>
>
> ............................................................
> Maksuton sähköposti aina käytössä http://luukku.com
> Kuukausimaksuton MTV3 Internet-liittymä www.mtv3.fi/liittyma
>
>