Explain this kodak material!

[Stephen Frizza]

would someone be able to explain what exactly this kodak material is to me?

http://cgi.ebay.com/KODAK-LINAGRAPH-2167-DIRECT-PRINT-PAPER-8-x100-SEALED_W0QQitemZ230233676467QQihZ013QQcategoryZ15226QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

 

[richard ide]

IIRC it was used for photo typesetting. Output positive print for paste up of camera ready art work. Things have changed a little since then.

 

[Photo Engineer]

Steve;

There were a variety of Kodak Linagraph papers, as well as similar products from several other companies.

They were intended for an extremely high process rate and a heat stabilization and recorded images from multichannel oscillographic records. I've seen more than 12 records, or lines on one strip chart. Geologists use these units to record data in the field. At Cape Canaveral, we used them to record real-time data from missle launches which included thrust, temperature, pump rpms, velocity, pressure, rotation rate etc. The paper came off the stabilzing drum and some was read real-time while others were stored as records.

PE

 

[richard ide]

Now eating words.

 

[Photo Engineer]

My first trip to Rochester was in December 1961 to view the Linagraph 2000 processor, just being offered as one contender to replace the CEC processor at the cape. The manager of the Photomaterials Recording Division was my host and we had a party of about 3 other people from the Cape come up here to view it. I remember using the trip north to stop in Pittsburgh for Christmas on the way back to Florida.

I vividly remember Tex, Al, and Barbie who was the division secretary. Al later became a very close friend after I joined Kodak.

PE

 

[AgX]

Was this material silver halide based?

 

[Photo Engineer]

Yes.

PE

 

[IanHydes]

Do you know any more about the chemistry in these papers? My company uses it with lasers but there isn't much available any more.

 

[mpirie]

PE is sadly no longer with us, so unless anyone else can answer, i think you're on your own.

Mike

 

[Lachlan Young]

Do you know any more about the chemistry in these papers? My company uses it with lasers but there isn't much available any more.

There's a whole world of thermal stabilisation/ processing silver halide materials - but which seem to have been more targeted at industrial/ medical markets. This should give you an outline of how they work.

 

[IanHydes]

Ah, sorry to hear that. Thanks for letting me know.
Lachlan, thanks for the link. Interesting reading on there. I've taken a punt on a roll of Fujix Pictorgraphy paper on ebay based on what I read. If I win it then we'll see if its suitable for our lasers. I'm not certain that Linagraph was designed as a photothermal paper, I thought it reacted to the light from the CRT and then was fixed with chemicals but may be mistaken. I thought the reaction to intense laser pulses was a fortunate side effect. I've tested some bromide based enlarging paper and seen similar (though not as good) results. The bromide enlarging paper isn't designed for a thermal process, again, its a beneficial side effect.

 

[Lachlan Young]

Ah, sorry to hear that. Thanks for letting me know.
Lachlan, thanks for the link. Interesting reading on there. I've taken a punt on a roll of Fujix Pictorgraphy paper on ebay based on what I read. If I win it then we'll see if its suitable for our lasers. I'm not certain that Linagraph was designed as a photothermal paper, I thought it reacted to the light from the CRT and then was fixed with chemicals but may be mistaken. I thought the reaction to intense laser pulses was a fortunate side effect. I've tested some bromide based enlarging paper and seen similar (though not as good) results. The bromide enlarging paper isn't designed for a thermal process, again, its a beneficial side effect.

As I understand it, Linagraph could be heat processed/ stabilised or processed in regular B&W chemistry.

 

[IanHydes]

hmm, perhaps yes. We usually fully expose the paper, as in, allow the sun to shine on it, it darkens slightly but not a great deal. Then the laser turns the area it hits a much darker colour allowing beam shape analysis. I suppose the laser could be selectively heat processing the completely black latent image. All this is very useful learning and insight for me. Thanks for the help.