RE: What are the advantages of using Cyanotype as the first layer fortri-color gum prints? Paper Problems...

Well, I can tell that my recent Cyanotype 2 prints on HP Cot320 paper are
extremely sharp; using 2880dpi Epson 1290 (1280 in the States) digital
negatives made on Ultrafine Crystal Clear, lightsouce: 8 BL tubes spaced
1.5cm (5/8") from each other, distance to contact frame glass 3.5cm (1
3/8"). Prints are so sharp that you can clearly and cleanly see every square
of the 2x2 pixels checkerboard pattern printed at 360dpi! (And I'm sure it
would also show a clean 1x1 pixel pattern also - if the printer was capable
to print it cleanly... Unfortunately it's not.)

Do you think that gum is capable of making prints rivaling / surpassing this
resolution?

TIA,
Loris.

-----Original Message-----
From: Katharine Thayer [mailto:kthayer@pacifier.com]
Sent: 19 Eylül 2005 Pazartesi 11:38
To: alt-photo-process-l@sask.usask.ca
Subject: Re: What are the advantages of using Cyanotype as the first layer
fortri-color gum prints? Paper Problems...

Christina Z. Anderson wrote:
>

> This is not to say gum does not print fine detail, yada yada yada.
> The detail can be paper dependent--e.g. cold press vs. hot press--as
> well as process dependent.

Hi,
I've always said that the question of whether gum can print fine detail is
mainly a function of the negative and the paper (it's hard for me to imagine
how a finely-focused large format film negative could print anything but
very sharp detail in gum on smooth paper) but, as Mark has shown in a recent
conversation here, the light source is also apparently a factor in sharpness
for gum.
Katharine

>
> Hi Chris,
> So the Cyanotype layer prints sharper than the gum layers?
> Mark Nelson
Received on Mon Sep 19 11:13:24 2005