Re: ImagOn and IntaglioType

F. Lovelett (redeft@.ari.net)
Sun, 06 Apr 1997 05:16:10 -0500

Ole Christian Magneshaugen wrote on 3/31/97
>Does any of the list-members have hands-on experience with printing of
>photographic images through the use of ImagOn film and the Intagliotype?
>
>I am intrigued by the scarce use of dangerous chemicals in this process,
>but curious as to its complexity, quality, etc.
>
>How does it "rate" image-qualitywise to other ink-based processes, such as
>gravuere/polymergravuere?
>
>olechr

I have been working with Imagon (Riston) film for Howard process
intaglio-type prints for about a year. If you're looking for "imitation"
photogravure, you may not like the "intaglio-types" - the prints have a
different look - they are shorter in tonal range and lower in resolution
than photogravures. I have come to love the intaglio-type process, but not
everyone does.

The process is relatively easy: a plate with Riston film laminated to its
surface is exposed to a halftone positive under strong UV light (I use
mercury vapor - "black-lites" apparently do not work well). The exposed
plate is developed in a simple solution of washing soda (sodium carbonate)
and water for a few minutes, squeeged off and dried. At this point, you can
either ink the plate pull 10-25 prints (non-etched Intaglio-type) or etch
in acid (ferric chloride but nastier mordants will work OK) for a larger
edition and the ability to work back into the plate.

I prefer the non-etched Intaglio-type process - it is quick, much more
forgiving has a slightly longer tonal range. And no acid at all !

The process is fairly foolproof, but there are many tricks to getting good
results. I would strongly suggest taking a workshop: see Fairview College's
web page for summer workshops in Alberta:
www.mtsu.edu/~art/printmaking/workshops.html#keith.

Good luck.

Felicia Lovelett