Re: tempera interests

How do you print for yellow?

alex

----------
>From: Tim O'Neill <rivervalleyimages@msn.com>
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: tempera interests
>Date: Tue, Jan 18, 2005, 8:58 PM
>

> What I mean is I am doing seps via RGB instead of cmyk. Hence I have 3
> negatives one for red, noe for green and one for blue. I have been making
> two exposures with each neg. So my final print has six exposires on it.
>
> I will go back to tryin the roller. I too havea foamy roughly the as you
> describe.
>
> Tim
>
>>From: Alex Chater <alex.chater@macunlimited.net>
>>Reply-To: alt-photo-process-l@sask.usask.ca
>>To: alt-photo-process-l@sask.usask.ca
>>Subject: Re: tempera interests
>>Date: Tue, 18 Jan 2005 20:10:44 +0000
>>
>>Yes I do use two negs. I feel that it is all a matter of information. You
>>have latitude in the washing phase so you can compensate to a considerable
>>degree for over or under exposure. I find that it takes a few coats to get
>>to strength so you have to build your tonal range on the print. It makes
>>sense to me to have two negs so you can store your information in two negs
>>You could even have three, one for the deep shadow one for the mid tones
>>and
>>one for the highlight. That may be a bit excessive as two seem to do very
>>well.
>>I use a tight foam roller commonly sold as glossing rollers. In the UK they
>>are about 4 inches long and about an inch in diameter The temperaprint
>>emulsion will sink into the surface of the roller and then you can just
>>press firmly enough on the roller to coat the yupo. The secret to good
>>coating is in the pressure, working methodically and observation
>>I have tried rubber rollers and it all just skates about without any
>>control
>>at all, the emulsion is just to thin and watery.
>>
>>'So far I have not been using cmyk but two exposures each of RGB.'
>>
>>I don't quite follow you. How does this work?
>>
>
>>alex
>>----------
>> >From: Tim O'Neill <rivervalleyimages@msn.com>
>> >To: alt-photo-process-l@sask.usask.ca
>> >Subject: Re: tempera interests
>> >Date: Tue, Jan 18, 2005, 2:31 AM
>> >
>>
>> > Allex,
>> > do you mean you use a separate neg or just a separate exposure for the
>> > shadows, mids, and highs? So far I have found four exposure is the
>>minimum
>> > to even get close to decent blacks and I still am not concerned with
>> > blocking the highlights so I have more I could go. It lends itself to
>>full
>> > color nicely. So far I have not been using cmyk but two exposures each
>>of
>> > RGB. As I saind I am closing in.
>> >
>> > when you use the roller in a fashion like rolling out printer ink do are
>>you
>> > using a foamy of or a soft rubber like a brayer. It seems if I get the
>> > viscosity close to what I would use if I were producing a monoprint i
>>have
>> > better luck. I will have to go back to the roller and practice. If you
>> > truly can get a smooth thin coating I truly am missing somehting in the
>> > "technique side. Thanks for you input.
>> >
>> > tim
>> >
>> >>From: Alex Chater <alex.chater@macunlimited.net>
>> >>Reply-To: alt-photo-process-l@sask.usask.ca
>> >>To: alt-photo-process-l@sask.usask.ca
>> >>Subject: Re: tempera interests
>> >>Date: Mon, 17 Jan 2005 18:29:11 +0000
>> >>
>> >>I find that I cannot get a full range of tone on a single coat any way.
>>I
>> >>find it good to have a printer for the shadow and a printer for the mid
>>to
>> >>high light. The roller is the method I use. I find that it needs to be
>> >>rolled out in a similar fashion as you would roll out printing ink. As
>> >>tempera print is really a multi layer process you can build your image
>>in
>> >>thin
>> >>coats.
>> >>In practice don't overload the roller and roll it out in a logical
>> >>manner, lightening the pressure as you go. In the end you allow the
>>roller
>> >>to glide quickly across he surface with as little pressure as possible.
>> >>Spread it first and then polish it up as it were, try to roll in one
>> >>direction
>> >>only, particularly at the beginning. You can get a very smooth finish
>>and
>> >>thin. When its gone smooth and you have done a fair number of speeder
>> >>passes, stop and dry it, done.
>> >>
>> >>Alex
>> >>
>> >>----------
>> >> >From: Tim O'Neill <rivervalleyimages@msn.com>
>> >> >To: alt-photo-process-l@sask.usask.ca
>> >> >Subject: Re: tempera interests
>> >> >Date: Mon, Jan 17, 2005, 3:27 AM
>> >> >
>> >>
>> >> > mixed as in crap and crappier. I still have not found a curve I
>>really
>> >>like
>> >> > specific to this process. Also I have being testing various coating
>> >>methods.
>> >> > Glas rod wrapped seems to be the best so far. Although Peters
>> >>suggested
>> >> > method of the roller has merit I am just missing something as I dont
>> >>like
>> >> > the texture it leaves. It alsmost looks like reticulation in 3d.
>> >> > ...Normally I would also use amm dich, last round I had pot dich
>>already
>> >>and
>> >> > thought I would test.
>> >> >
>> >> > T
>> >> >>From: Alex Chater <alex.chater@macunlimited.net>
>> >> >>Reply-To: alt-photo-process-l@sask.usask.ca
>> >> >>To: alt-photo-process-l@sask.usask.ca
>> >> >>Subject: Re: tempera interests
>> >> >>Date: Sun, 16 Jan 2005 20:57:17 +0000
>> >> >>
>> >> >>
>> >> >>Personally I use Ammonium dichromate for this process. It is faster.
>> >>What
>> >> >>do
>> >> >>you mean by mixed results?
>> >> >>
>> >> >>Alex
>> >> >>
>> >> >>----------
>> >> >> >From: Tim O'Neill <rivervalleyimages@msn.com>
>> >> >> >To: alt-photo-process-l@sask.usask.ca
>> >> >> >Subject: tempera interests
>> >> >> >Date: Sun, Jan 16, 2005, 6:46 PM
>> >> >> >
>> >> >>
>> >> >> >
>> >> >> > I have been printing more tempera today with mixed results. I am
>> >>however
>> >> >> > getting closer. Seems I had old sensitizer the lst go around so
>> >>results
>> >> >>we
>> >> >> > not there at all. Sensitizer will lose its punch. This was Pot
>>Dich
>> >> >>and 4
>> >> >> > mos old at room temp in a brown bottle. On another note for any
>> >> >>printmakers
>> >> >> > out there. In expermenting with lupo I was curious if I could
>>come
>> >>up
>> >> >>with
>> >> >> > a icc profile for it. When I ran it through my Epson I got the
>> >>expected
>> >> >> > wheel tracks ect from printing on a pretty non- absorbant surface.
>> I
>> >> >>took
>> >> >> > that image and sandwhiched it with a piece of fine art paper and
>>ran
>> >>a
>> >> >> > brayer across it (just like a monoprint) and it transferred with
>> >>really
>> >> >> > interesting results
>> >> >> >
>> >> >> > Tim O'Neill>
>> >> >> >
>> >> >> >
>> >> >
>> >> >
>> >
>> >
>
>
Received on Tue Jan 18 17:12:45 2005