Re: help with a strange printing problem

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Lea,

One remote possibility is a coating issue.  Almost 30 years ago I had an almost identical problem
when I was buying large amounts of custom coated 16mm high resolution film from DuPont.  About a
hundred 1200 foot rolls had a higher density stripe about one millimeter wide at the the same places
on every roll.  DuPont traced it to a splice in a drive chain that caused a very brief delay in the
wide roll coating process.

It this the answer, I shudder (sic) to think that film manufacturers are allowing their equipment to
degrade--but with the limited economic return from professional film sales, it might be the case. 
About five months after my experience, DuPont quit the custom coating business and made one final
500 roll batch for me. As an historical aside, I later learned that my film and other custom coated
film was being coated on the same line that was built to produce Aerial Reconnaissance film during
the US conflict in Viet Nam.  Somewhere in my basement I have a sealed canister of useless 9"wide
film they sent me as an "off the record" souvenir.

Bill 

lea wrote:
> 
> Many good suggestions of things to check.
> 
> I just ran another print...some 50 sheets of paper away from when I printed
> this originally...and the mark is still there which rules out the paper.
> Under very close scrutiny with my loupe I can see the dense are on the neg.
> It isn't a crimp, it isn't from the negs touching during development as
> there is none of that cloudy mess you get when that happens. The only other
> idea someone suggested was to refix which I've now done. The neg is hanging
> to dry....I'll run a print in the morning and see what I come up with.
> 
> Thanks for the input,
> Lea
> 
> ----- Original Message -----
> From: "Bill Ellis" <wb9cac@attbi.com>
> To: "List for Photo/Imaging Educators - Professionals - Students"
> <photoforum@listserver.isc.rit.edu>
> Sent: Tuesday, June 17, 2003 3:52 PM
> Subject: Re: help with a strange printing problem
> 
> > Lea,
> >
> > How about film touching during development ?
> >
> > Bill Ellis
> >
> > ----- Original Message -----
> >
> > From: "lea" <lea@whinydogpress.com>
> > To: "List for Photo/Imaging Educators - Professionals - Students"
> > <photoforum@listserver.isc.rit.edu>
> > Sent: Tuesday, June 17, 2003 1:11 PM
> > Subject: help with a strange printing problem
> >
> >
> > > I posted a couple problem images to my web site. Clicking on the link
> will
> > > take you to a page where you will see two images from a recent photo
> > shoot.
> > > There is a very odd line running thru the images that I would guess was
> > lack
> > > of fix or development except they are the only 2 frames on a 36 exposure
> > > roll which show this problem. They are next to each other, about mid
> roll.
> > >
> > > Agitation during film development was inversion and agitation during
> paper
> > > development is constant.
> > >
> > > I'm stumped and am open to hearing what others think may have caused
> this.
> > > Could it be bad paper? The day these were printed I printed about 30
> > others
> > > and didn't have a hitch of trouble with any others...thank goodness.
> > >
> > > http://www.whinydogpress.com/mystery.html
> > >
> > > Appreciating any help...
> > > Lea
> > >
> > >
> > > Lea Murphy
> > > Whiny Dog Press www.whinydogpress.com
> > > New images www.whinydogpress.com/new.html
> > > Picture a Week PAW http://www.whinydogpress.com/paw.html
> > >
> >
> >
> >


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