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Has anyone priced out the new LED exposure units?
LED exposure units
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The hybrid is a diazo/dual cure. The 10-30 sec times are photopolymer.
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Which size did you get of the Lawson LED 5000, and how much for that size?
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I have now built a few led units. I have a single source that retrofits the old national and atlas 5 way units. I just built a retro fit for a Ryonet 25x36 unit. I built one a few years back that was no better in terms of under cutting then the black light florescent units. I used stronger LEDs and more of them it made all the diffrence in the world. 10 sec exposure with Saati Chem PHU. There was almost no undercutting if any at all. What I saw under the microscope may have just been screen edges. The exposure was very sharp. This is way diffrent then my original experimenters even before the commercial units were avaliable.
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What about half tones? Spot and process work? What kind of dot can you hold?
We use an m&R starlight.
Orange emulsion.
30 s with drawdown, 7 sec burn.
No issues with anything.
Methinks the vast number of LEDs mitigated undercut issues.
Replaced 2 amergraph 150's
We do use cci emulsion for dc and wb, longer burn time, but quicker than amergraphs were.
Orange emulsion.
30 s with drawdown, 7 sec burn.
No issues with anything.
Methinks the vast number of LEDs mitigated undercut issues.
Replaced 2 amergraph 150's
We do use cci emulsion for dc and wb, longer burn time, but quicker than amergraphs were.
We bought the 40x50. Looking to get a double master frame to make the entire process even faster. Looking under the microscope there are very clean lines. And while traditionally many people prefer a single point system. The new LED system runs the best screens I have ever seen. We can easily get a 10% halftone on a 230.
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I'm good with 10%. Will definitely put this in the plan.
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How much did you pay for the 40x50?
We have had our M & R Starligt for just over a month now.
There is not a better exposure unit on the market.
This unit has a lot more LED so that really helps in cutting down the exposure time.
With a one part emulsion we sre typically burning our screens from 4 to 7 seconds with about a 15 second draw down. We figure we are burning screens in about 30% of the time we had been previously.
As for holding halftones and fine lines you will find nothing better than an LED unit.
These clearly are the way of the future.
Check them out at an ISS show.
You will be blown away.
Just an FYI. M & R is so confident in the LED"S that they are offering a lifetime warranty on replacements if ever needed.
And no I do not represent M & R but it is the one I am most familiar with.
There is not a better exposure unit on the market.
This unit has a lot more LED so that really helps in cutting down the exposure time.
With a one part emulsion we sre typically burning our screens from 4 to 7 seconds with about a 15 second draw down. We figure we are burning screens in about 30% of the time we had been previously.
As for holding halftones and fine lines you will find nothing better than an LED unit.
These clearly are the way of the future.
Check them out at an ISS show.
You will be blown away.
Just an FYI. M & R is so confident in the LED"S that they are offering a lifetime warranty on replacements if ever needed.
And no I do not represent M & R but it is the one I am most familiar with.
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Metal halide still give the same results for fine lines and halftones as a led if not just slightly better. The led advantage is low heat, low power consumption and less maintenance. This was directly from a M&R rep. I do agree the LED is the future. The commercial units though are over priced for what they have in them. I can buy more 3w UV LEDs and drivers for them then any of the commercial units for incredibly cheap prices. But this is nothing new in this industry.
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