Archived posting to the Leica Users Group, 1999/08/12

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Subject: Re: [Leica] aristo cold light head
From: Mark Rabiner <mrabiner@concentric.net>
Date: Thu, 12 Aug 1999 01:20:50 -0700

Frank Filippone wrote:
> 
> I have a little game I play where I set my timer to it's 99 second maximum
> and
> run the Blue light as it's warming up and then run the green. This is a way
> of
> warming it up faster. It seems then ready to print. (from experience)
> 
> Is this all you do for the entire maybe 4 hours you are in the DR?  3
> minutes total?  Or do you run the tubes each time you do a single print?
> 
> Frank

There is a warm-up time when you turn on the head and the internal heater starts
warming up the tubes.
This can be quickened by turning on the tube or tubes.
Once they are warm you can print like crazy.
Actually you can't print like crazy because if you are using longer times in
rapid succession they will become too warm and them become brighter. So you have
to space things out a little bit and not use a bunch of times in secession over
20 seconds. Some single tube users have a Metrolux timer hooked into the bulb
which adjusts for fluctuations. This might not be possible with a 2 bulb
variable contrast setup but I always got along without them anyway. 
Every time I tried to call them all I heard was a high pitched beep. I gave them
my best high pitched beep but their telephone system didn't interface with my
brain. Companys which can only deal with a Fax don't get my Biz.
Mark Rabiner