Author Topic: What LED exposure unit is the best performing?  (Read 3292 times)

Offline ZooCity

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Re: What LED exposure unit is the best performing?
« Reply #15 on: January 12, 2021, 07:12:30 PM »
At one point M&R support wrote me a program update to run the fans more, so that exists too.  Unfortunately, there is no filtration for air exchange so you'll be introducing some dust or will need to diy something if running the fans more. 

I adapted by drastically reducing our coating thickness.  There is still breakdown where you would not see it if running MH (at the blade drop points for instance) but it's overall doable, especially if you top tape there. 


Offline nightheron

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Re: What LED exposure unit is the best performing?
« Reply #16 on: Yesterday at 10:14:09 PM »
What LED unit would you recommend?  We have an old MH 6K NuArc, but sometimes the bulbs are hard to find.  Is the Starlight or Saati  a good choice?  We do our own line of 4c process and simulated process.   W use a Wasatch RIP and an Epson Surecolor 4900 printer.  The printer occasionally needs repairs.

Offline blue moon

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Re: What LED exposure unit is the best performing?
« Reply #17 on: Today at 10:09:07 AM »
What LED unit would you recommend?  We have an old MH 6K NuArc, but sometimes the bulbs are hard to find.  Is the Starlight or Saati  a good choice?  We do our own line of 4c process and simulated process.   W use a Wasatch RIP and an Epson Surecolor 4900 printer.  The printer occasionally needs repairs.
We use the Saati pro lite 450w and are pretty happy with it. With films you might need the fully enclosed version, dont know anything about those as we run the light source only.
We tested the Vastex unit and it had a good uniform field. M&R had really bad field consistency, but they did not care. All of this testing was done many years ago so it’s possible they fixed it.
As far as i know, Saati is the only one that has it set up as single point light source, all the others will create some under cutting, which might or might not be a big deal depending in the work you do.
Smaller MH units can be had pretty cheap and can be excellent value for the money. M&R Nuarc3140 is a great unit thats dropping in price. Yes, you need to replace the bulbs every now and then (i think we ran 2 years with about 50 screens per day), but the integrator works well so it’s easy to use.
Pierre
Working on a new web page, we have two for now. Bluemoonscreenprint.com and promodecorators.com.

Offline bimmridder

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Re: What LED exposure unit is the best performing?
« Reply #18 on: Today at 04:03:23 PM »
Umm, how can it be a point light source if it has more than one light?
Barth Gimble

Printing  (not well) for 35 years. Strong in licensed sports apparel. Plastisol printer. Located in Cedar Rapids, IA

Offline blue moon

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Re: What LED exposure unit is the best performing?
« Reply #19 on: Today at 04:28:12 PM »
They are all bunched up in about two inches circle and there is a proper colimator around them.
Working on a new web page, we have two for now. Bluemoonscreenprint.com and promodecorators.com.

Offline tonypep

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Re: What LED exposure unit is the best performing?
« Reply #20 on: Today at 07:08:57 PM »
FYI depending on emulsion but my experience with wb/discharge regardless of exposure including LED/LTS in order to properly ensure great results use the sun!

Offline nightheron

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Re: What LED exposure unit is the best performing?
« Reply #21 on: Today at 09:33:03 PM »
 Thank you for the good tips.  I will look for a M&R Nuarc 3140.  Would the Saati prolite 450w replace my old Nuarc 6k MH lamp?  I use film, and I have a large vacuum  frame with blanket. 

Offline cclaud3

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Re: What LED exposure unit is the best performing?
« Reply #22 on: Today at 09:52:46 PM »
We also use the Saati prolite 450w and make bulletproof screens for water based prints.