Re: spots and fish eyes

It sounds like the paper is not internally sized enough, so some spots are
absorbing the emulsion to the fiber level, so it can't clear; but this is
still based on my "guess" on how the spots look like. Maybe we should wait
until we see the picture. :-)

Dave S

----- Original Message -----
From: "Christina Z. Anderson" <zphoto@montana.net>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Monday, December 08, 2003 6:11 PM
Subject: Re: spots and fish eyes

> PS, the dark spots happened immediately upon coating the print, not during
> development. You'll probably think I'm nuts for keeping on with the print,
> but I did do 3 coats, and all three did the same thing, so it wasn't the
> pigment choice, mixture, unevenness. I thought at first they'd disappear
> when I developed; they didn't, but then I found them quaint (we'll see if
> the faculty does) and kept doing more coats :)
> Chris
> ----- Original Message -----
> From: "Katharine Thayer" <kthayer@pacifier.com>
> To: <alt-photo-process-l@sask.usask.ca>
> Sent: Monday, December 08, 2003 8:17 AM
> Subject: Re: spots and fish eyes
>
>
> > Chris,
> > If Ed's not available I'll be glad to throw this up on my website so
> > people can see what you're talking about, with these black spots. It
> > could be several things, but it depends what size the spots are, and
> > what they look like; it's difficult to diagnose without seeing them.
> >
> > If the fish eyes are what I'm picturing, where the emulsion opens up
> > holes as it's being brushed on, I'm totally with Jack on the cause: the
> > surface is not accepting the emulsion, and in my experience the most
> > likely cause for that is that the sizing is too thick or too slick. If
> > the sizing fills the tooth of the paper, then there's nothing for the
> > emulsion to hang onto. I like Jack's idea of Scotch-brite; I've used
> > sandpaper for the same purpose.
> > kt
> >
> > Dave S wrote:
> > >
> > > Christina,
> > >
> > > It is hard to visualize how the fish eyes look like. Could you
describe
> > > more?
> > >
> > > Are you using acrylic sizing?
> > >
> > > Dave S
> > >
> > > ----- Original Message -----
> > > From: "Christina Z. Anderson" <zphoto@montana.net>
> > > To: "Alt List" <alt-photo-process-l@sask.usask.ca>
> > > Sent: Monday, December 08, 2003 7:53 AM
> > > Subject: spots and fish eyes
> > >
> > > > Good morning all!
> > > > I was wondering what the group consensus is on the cause of
fish
> eyes
> > > > in gum printing? Is it because the gum/pigment mix is too "limpid"
> as
> > > one
> > > > old author said (too watery)? Or is there another cause? This same
> > > author
> > > > talked about gum, when being mixed with the dichromate, goes into
> little
> > > > microscopic globules that causes this. Or spotty sizing?
> > > > In the same vein, I have a most unusual print I did this week
> that I
> > > > would love Ed Buffaloe to show on his site (Ed?); it is really
funny.
> It
> > > > fits with my project, which is using negs from my dad's collection
> from
> > > the
> > > > late 20's to the late 40's, digitizing the odd shaped negs, and
> printing
> > > > them out so they look like when people were trying to make black and
> white
> > > > color (can you tell I am not very eloquent this morning...) Anyway,
> there
> > > > are all these black spots all over one side, and a line down thru
the
> > > middle
> > > > that looks like water damage. I am very sure it is uneven sizing of
> the
> > > > Fabriano paper--probably due to operator error in that with my
> shrinking
> > > of
> > > > the paper I put one too many pieces of paper in my bathtub and did
not
> > > > agitate enough, or perhaps it could be manufacturer error. Anyone
> have a
> > > > similar problem?
> > > > Chris
> > > >
> > > >
> > > >
> > > >
>
>
>
>
Received on Mon Dec 8 17:31:50 2003