U of S | Mailing List Archive | alt-photo-process-l | RE: Hand collotype in process

RE: Hand collotype in process

Wow, thanks much!

I'm interested in commercial fine-art printing (albeit in a very small
artisanal scale; maximum 40-50 copies per plate or so...), therefore, I
definitely need a press. If I'm not mistaking, an etching press can be
converted to a relief press but I'm not sure how.



From: Tomas Sobota [mailto:tom@sobota.net] 
Sent: Wednesday, June 17, 2009 11:45 AM
To: alt-photo-process-l@usask.ca
Subject: Re: Hand collotype in process


Collotype definitely can be done in-house, since I did it :-) Naturally, I'm
not interested in commercial printing, for that you need serious equipment
and a collotype press... and a lot of training. However for experimental
work where a blemish or two (or many more in my case) on the plate are
tolerated, the technique is fairly approachable.

From what I have read, you can use an etching press, which you will need
anyway, if you are interested in photogravure. The pressure needed is far
less that what you need for woodburytype, so people also use relief presses
as those used for linoleum or wood.

I don't think that collotype presses are made anymore, since it is a process
that has fallen abruptly to disuse since offset came along. They were
beautiful beasts, you can see one here: http://www.lichtdruck.de 
But they were dismantled and destroyed since, so it is very difficult to
find one. Also, you need a large space to house them.

On the other hand, these guys in France:
use a small letterprint press.

If you read French, visit the site of Michel Momal, he is a French expert in
collotype and has loads of info about the process: http://www.phototypie.net
. (Click on "Visite Guidèe" on the left and then n.9 on the bottom "Les
presses phototypiques". You will see several images of collotype presses.
Momal also has a pretty large one)

Tom Sobota
Madrid, Spain

On Tue, Jun 16, 2009 at 10:18 PM, Loris Medici <mail@loris.medici.name>

	Hi Tsuyoshi & Tom,
	I'm interested in photogravures, I'm currently researching (and
judging feasibility)... I plan to use photopolymer plates, mainly because I
find traditional photogravures (copper plates, carbon tissue, ferric
chloride etching etc...) is too much complicated and time taking. Plus, we
have two Toyobo distributors here in Istanbul, so it's accessible to me...
	Collotype is most interesting because one doesn't have to rely to
"expensive" factory-made materials (such as Toyobo photopolymer plates!), it
seems something that can be done in-house totally. Am I right?
	I guess one needs a relief press if they are not going to make hand
impressions? Are ordinary relief presses OK for the job, or are there
specialized collotype presses around? (Will do single impressions; I'm not
interested in duotone, tritone, quadtone or color work.)