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morse contact printers
In article t,
Richard Knoppow wrote: "Thor Lancelot Simon" wrote in message ... In article et, Richard Knoppow wrote: If its as slow as contact printing paper it should work like a charm. The lamps are arranged with separate switches for each lamp for dodging but the lamps are also arranged with additional switches that turn them on or off in concentric rings. The 10x10 printer has 39 low wattage GE UV lamps. These are rather nice for platinum printing. I am surprized they are intense enough. Platinum printing usually requires a very strong source such as a plate burner or not too strong daylight, similar to printing out paper. The UV sources in the Morse printer are about 4 watts each. They were designed for short printing time on paper like Azo, not for printing out papers. Have you actually used a Morse printer for Platinum? I took a printing class with George Tice in the early 1990s, and on the last day he brought his platinum printing setup in and demonstrated it. From the description of the arrangement of light sources in the 10x10 Morse I am pretty much certain that that's what he used (his printer was 10x10 as well). I don't know whether he modified the light source somehow for more brightness -- were these bulbs available in higher wattages? The printer was very convenient and certainly nicer than other light sources for platinum printing that I've used since. Platinum emulsion is very UV sensitive. Perhaps that makes the difference. -- Thor Lancelot Simon "We cannot usually in social life pursue a single value or a single moral aim, untroubled by the need to compromise with others." - H.L.A. Hart |
morse contact printers
I have a Morse contact printer. I have found that I can make contact
prints on normal enlarging paper by using an enlarging timer to control exposure. I have a timer that will do time increments of 0.1 seconds. With all of the bulbs exposing I can usually get properly exposed prints at times of about 0.4-0.5 seconds. When I cut the number of bulbs down I can get a little more exposure latitude. If we added an ND filter for 3-4 stops density decrease, and also used the timer we would probably have a reasonable amount of print control. |
morse contact printers
On Tue, 04 Jul 2006 04:10:44 GMT, "Richard
Knoppow" wrote: The last week we have had 90 degree temperatures in L.A. so I have not been feeling much like darkroom work (no A/C). -- --- Richard Knoppow Los Angeles, CA, USA July 4, 2006, from Lloyd Erlick, Last summer I decided against getting an air conditioner. This year I've learned from my silliness and put the smallest one they sell in my window. What a relief. As Canadians say, it's not the heat, it's the humidity ... regards, --le ________________________________ Lloyd Erlick Portraits, Toronto. website: www.heylloyd.com telephone: 416-686-0326 email: ________________________________ -- |
morse contact printers
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morse contact printers
On Tue, 04 Jul 2006 07:22:55 -0400, Lloyd Erlick Lloyd at @the-wire.
dot com wrote: As Canadians say, it's not the heat, it's the humidity ... Humidity ? What's that ? http://www.wunderground.com/cgi-bin/...st?query=37183 16C and 82% at 10:12PM CST. BTW, did I ever mention that I live on Spring St. ? Yeah guess what's right down the road. 2 creeks ! == John S. Douglas Photographer & Webmaster Legacy-photo.com - Xs750.net |
morse contact printers
On Thu, 29 Jun 2006 10:16:15 GMT, "Richard Knoppow"
wrote: They are beautifully designed and very ruggedly built machines but paper suitable for contact printing on them is simply not available any more (although I understand someone may have undertaken to make a replacement for Azo). And what about Azo ? I haven't heard anything from Michael Smith since that APB for the Azo ordering he did with Kodak a couple of years ago. http://www.michaelandpaula.com/mp/Azo_Notice.html == John S. Douglas Photographer & Webmaster Legacy-photo.com - Xs750.net |
morse contact printers
I have used one of these for printing-out paper. The exposure time was
2 - 5 minutes. The heat build up during the exposure time was minimal. I also printed to blue print paper. If I had one of these things now, I would print some of my old negatives to a home made silver chloride coated paper. Richard Knoppow wrote: "Thor Lancelot Simon" wrote in message ... In article .net, Richard Knoppow wrote: "murrayatuptowngallery" wrote in message egroups.com... Doesn't sound like a boat anchor...sounds cool, other than the unpleasantry of having to source and pay for replacement argon lamps, but the detail of circular placement and switches is something that would be a pain to implement. How about contact print internegs onto graphic arts film...that's slow, right? If its as slow as contact printing paper it should work like a charm. The lamps are arranged with separate switches for each lamp for dodging but the lamps are also arranged with additional switches that turn them on or off in concentric rings. The 10x10 printer has 39 low wattage GE UV lamps. These are rather nice for platinum printing. -- Thor Lancelot Simon I am surprized they are intense enough. Platinum printing usually requires a very strong source such as a plate burner or not too strong daylight, similar to printing out paper. The UV sources in the Morse printer are about 4 watts each. They were designed for short printing time on paper like Azo, not for printing out papers. Have you actually used a Morse printer for Platinum? |
morse contact printers
"Nermal" wrote in message ink.net... I have used one of these for printing-out paper. The exposure time was 2 - 5 minutes. The heat build up during the exposure time was minimal. I also printed to blue print paper. If I had one of these things now, I would print some of my old negatives to a home made silver chloride coated paper. Richard Knoppow wrote: "Thor Lancelot Simon" wrote in message ... I am very surprized that you got this result. My experience with printing out paper is that it requires a few minutes in direct sunlight. The intensity of my Morse printer is very much below this. They were intended for printing aerial camera negatives on rather slow contact paper, something like Azo, with a few seconds exposure time. The lamps are very low power Argon lamps. BTW, I found a bunch of the lamps at a ham radio swap meet a couple of months ago for a dollar each! I don't think the guy selling them knew what they were. -- --- Richard Knoppow Los Angeles, CA, USA -- Posted via a free Usenet account from http://www.teranews.com |
morse contact printers
These Argon lamps produce a very intense UV output. A simple test will
indicate the relative intensity of the Argon lamps vs. sunlight: insert a negative in a print frame in front of a sheet of enlarging paper (any type for this test). Place in direct sunlight for a few minutes and check the image on the paper. Do the same with the Argon lamps in front of the negative. You may be surprised. I have also used B&W paper loaded in a press camera and exposed the paper until I got a good visible image on the paper (only a few hours at f8). The printed out images can be fixed in regular fixer. Last emulsion that I tried (Kodabromide F5) worked ok but the image lacked contrast. I did not try intensifying or toning the images. The paper negatives produced using a camera contact printed out ok (must use a paper with out a water mark. Richard Knoppow wrote: "Nermal" wrote in message ink.net... I have used one of these for printing-out paper. The exposure time was 2 - 5 minutes. The heat build up during the exposure time was minimal. I also printed to blue print paper. If I had one of these things now, I would print some of my old negatives to a home made silver chloride coated paper. Richard Knoppow wrote: "Thor Lancelot Simon" wrote in message ... I am very surprized that you got this result. My experience with printing out paper is that it requires a few minutes in direct sunlight. The intensity of my Morse printer is very much below this. They were intended for printing aerial camera negatives on rather slow contact paper, something like Azo, with a few seconds exposure time. The lamps are very low power Argon lamps. BTW, I found a bunch of the lamps at a ham radio swap meet a couple of months ago for a dollar each! I don't think the guy selling them knew what they were. |
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