Have incomplete Zeutschel CL2 microfiche reader; need info on missing parts

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Skyscraper System Administrator - 24 Aug 2004 15:49 GMT

Hi,

I have recently acquired the better? parts of a Zeutschel CL2
microfiche reader, i.e. the heavy base-section with lenses
and slider mechanism.

What's missing is the 'hood' (with the matte screen and prob.
two mirrors?) and the lamp-fitting/construction from the base
section.

W.r.g. to the lamp compartment at the base backend -- it is
empty, and near it are two brown wires that have been cut off.
Not much of a fitting, or any indication as to what type of
lamp would be in there, and how.

When I turn the base upside down, the only thing I see is the
thin rod, which moves as you change lenses. It is threaded at
the end, but nothing is attached to it, so it's hanging loose
right now. Also there's a sort of rest with a felt pad.
I have no idea what the rod used to be for. Maybe a diaphragm,
or another tilting mirror to change light intensity as you
change lenses?

In any event, I would like to ask if anyone here is familiar
with this type of microfiche reader, and could give me some
details, drawings, or preferably pictures from the bottom side
of the base, to aid me in an attempt at some reconstruction.

Am I right that the hood was basically just two mirrors and
the matte screen?

Any help will be appreciated.
Thanks!

BJ

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usenet@imagenoir.com - 26 Aug 2004 18:13 GMT

[fixing an incomplete microfiche reader]

>W.r.g. to the lamp compartment at the base backend -- it is
>empty, and near it are two brown wires that have been cut off.
>Not much of a fitting, or any indication as to what type of
>lamp would be in there, and how.

All the microfiche readers I've worked on have used a 12V or 24V halogen
bulb. I'm not familiar with your brand, so it'd be a good idea to
measure the voltage delivered to the lamp wires with a multimeter. Note
that most transformers deliver 20-40% more voltage than the rating when
unloaded, so adjust the measured voltage accordingly. (eg; if the bulb
needs 12V, you'll probably measure 14-20V at the wires.)
For testing purposes, you could probably get away with using one of
those extremely cheap halogen desk lamps with the 12V transformer built
into the base, & ignoring the wiring in the reader.

>When I turn the base upside down, the only thing I see is the
>thin rod, which moves as you change lenses. It is threaded at
[quoted text clipped - 3 lines]
>or another tilting mirror to change light intensity as you
>change lenses?

Could be. Readers obviously need to adjust the light intensity to match
each magnification setting. I'm damned if I can remember how it was done
on the units I serviced - it's been far too many years since then!
If the fiche carrier is missing, it possibly might be part of that
mechanism? If you put up a few photos of the unit on a webpage, I could
probably figure it out.

>In any event, I would like to ask if anyone here is familiar
>with this type of microfiche reader, and could give me some
>details, drawings, or preferably pictures from the bottom side
>of the base, to aid me in an attempt at some reconstruction.

I'm afraid I mainly worked with Bell & Howell readers & reader/printer
units, & it was a long time ago so I can't help you with specifics.

>Am I right that the hood was basically just two mirrors and
>the matte screen?

Pretty much. The two major types I've seen are the cheap ones that
project the image onto a screen inside the hood, & the hood is just
there to keep out ambient light, & the better units that use a big
mirror to reflect the image onto a matte screen at the front of the
hood, like a monitor.

>Any help will be appreciated.
>Thanks!

I'm not sure how much help this post will be to you, but hopefully it'll
be at least slightly useful. :)

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W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
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Skyscraper System Administrator - 27 Aug 2004 10:39 GMT

Thanks for your input. This is all quite a long shot, including posting
here (also posted on sci.electronics.equipment).

There's a picture of the mf reader I'm talking about, the Zeutschel CL2,
on http://www.zeutschel.de/frame_e.htm. Note the oversized screen.

In the meantime I did some googling for mf readers in general, and found
one whose construction looks quite similar to the CL2, namely the Eye Com
EC7000 -- although admittedly there is some interpolation/extrapolation
in that judgement.
There's a good manual online for that one, including diagrams and a parts
list, at http://www.eyecom.com/Micrographics/PDF/ec7000man.pdf.

Btw, I do know the el. specs of the CL2, it's a 230V, the lamp would have
to be a 24V/150W and is a LA1/216, which I've found is an FCS ANSI bulb,
see http://www.donsbulbs.com/cgi-bin/r/b.pl/fcs_ansi.html, which is a great
site (correct me if I'm wrong on the lamp).
Actually the el. part isn't much of a concern to me at this moment,
although I would have to get a socket (which I assume has a fuse, since
that's missing also), and of course the lamp -- I should expect them not to
be cheap, I gather...

One thing that's definitely different is, the above mentioned EC7000 --that
I'm taking as a reference for the moment-- doesn't appear to have anything
in the way of a rod in the base. I really wonder what purpose it served
here on the CL2. Its dynamic reach is 0-25mm.
Anyway, if this one is similar at all, there appears to be more ripped
out from the base than I had expected and assumed; looks like I'll need
at least two condenser lenses, plus the 'cold' mirror (why is it called
'cold'?). Would you say the heat filter is just a glass plate?

For the hood, I'm gonna have to find a large mirror (front coated) and the
matte screen (prob. some plexiglass). The smaller mirror attached to the
lens slider is present.

> Perna condita delenda est

Let's hope so ;-)

Ok, I made some quick webcam snapshots, they're at
http://www.xs4all.nl/~bjdouma/zeutschel-cl2.png. Any further input or
suggestions would be appreciated very much.
Thanks!

BJ

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