Author Topic: Led exposure unit?  (Read 24816 times)

Offline Frog

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Re: Led exposure unit?
« Reply #90 on: January 15, 2013, 03:21:18 PM »
I haven't been following this thread closely.. so maybe this has been discussed.
Anyway...
1) An led light source that is instant "ON" has a big advantage over most MH light sources which have restrike time.
2) The UV emission for an LED can be a fairly narrow band of wavelength.
3) It's possible to chose the desired emission range (see link below)
http://www.phoseon.com/technology/led-uv-wavelength.htm

Regarding he who shall not be discussed... "a pox on his house"


Northland, as you may have guessed, those points have pretty much been covered. The sticking point for some now is the break from the traditional single point source, and its possible ramifications.
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Offline inkman996

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Re: Led exposure unit?
« Reply #91 on: January 15, 2013, 03:24:32 PM »
Quote
At $2200 for a exposure unit that does auto frames and exposes in 10 to 15 seconds it will be a game changer.

No joke there, and that is not also including the seriously long bulb lives on them suckers.

So for $2200, auto frame size, 10 to 15 seconds, high detail, probably never need to replace any bulbs, low heat, lower electricity, that certainly would be a game changer.
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Offline Northland

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Re: Led exposure unit?
« Reply #92 on: January 15, 2013, 03:32:28 PM »
I haven't been following this thread closely.. so maybe this has been discussed.
Anyway...
1) An led light source that is instant "ON" has a big advantage over most MH light sources which have restrike time.
2) The UV emission for an LED can be a fairly narrow band of wavelength.
3) It's possible to chose the desired emission range (see link below)
http://www.phoseon.com/technology/led-uv-wavelength.htm

Regarding he who shall not be discussed... "a pox on his house"


Northland, as you may have guessed, those points have pretty much been covered. The sticking point for some now is the break from the traditional single point source, and its possible ramifications.

The led array doesn't have to be like a mat (scattered)... it can be a window (20mm wide).
http://www.phoseon.com/products/FireLine.html

Offline spotcolorsupply

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Re: Led exposure unit?
« Reply #93 on: January 15, 2013, 03:41:29 PM »
@LDTRONIX

Assuming this unit works the way you claim... Do you have any interest in distributors?
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Offline inkman996

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Re: Led exposure unit?
« Reply #94 on: January 15, 2013, 03:50:10 PM »
I haven't been following this thread closely.. so maybe this has been discussed.
Anyway...
1) An led light source that is instant "ON" has a big advantage over most MH light sources which have restrike time.
2) The UV emission for an LED can be a fairly narrow band of wavelength.
3) It's possible to chose the desired emission range (see link below)
http://www.phoseon.com/technology/led-uv-wavelength.htm

Regarding he who shall not be discussed... "a pox on his house"


Northland, as you may have guessed, those points have pretty much been covered. The sticking point for some now is the break from the traditional single point source, and its possible ramifications.

The led array doesn't have to be like a mat (scattered)... it can be a window (20mm wide).
http://www.phoseon.com/products/FireLine.html


That looks pretty neat, and they emit the correct NM for emulsion. It states they are scalable end to end so I would guess ou could array them side by side for the same effect. Wonder what those things run?
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Offline alan802

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Re: Led exposure unit?
« Reply #95 on: January 15, 2013, 04:22:54 PM »
Make one big enough for two frames at a time and if it can do one of our 110's with a 200 micron stencil in under a minute then I'll buy one...assuming it works like it's said to.
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Those who expect to reap the blessings of freedom, must, like men, undergo the fatigues of supporting it -T.P.

Offline 3Deep

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Re: Led exposure unit?
« Reply #96 on: January 15, 2013, 04:31:36 PM »
If led exposure lights are anything light those on car headlights then those suckers are bright and could really toss out some uv, sorry I didn't read thru all the post I just read one that stated how do they work.

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Offline screenprintguy

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Re: Led exposure unit?
« Reply #97 on: January 15, 2013, 04:41:22 PM »
Alan, if it really does the trick, would be better than replacing that $600 bulb from time to time huh  :P
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Offline Screened Gear

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Re: Led exposure unit?
« Reply #98 on: January 15, 2013, 05:17:05 PM »
I can't wait until the LED flash and dryer for waterbase and plastisol is on the market. Now there is an area that can save some coin.

Offline prozyan

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Re: Led exposure unit?
« Reply #99 on: January 15, 2013, 05:22:02 PM »
Quote
So for $2200, auto frame size, 10 to 15 seconds, high detail, probably never need to replace any bulbs, low heat, lower electricity, that certainly would be a game changer.

As soon as performance was verified, I would buy one.
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Offline blue moon

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Re: Led exposure unit?
« Reply #100 on: January 15, 2013, 05:47:42 PM »
Pierre,

Can we talk tech?

If you have the time...

Call me please

My daughter is having some major surgery on friday and will be in the hospital for a little bit. I can get in touch when the dust settles if you can wait a few weeks.

pierre
Yes, we've won our share of awards, and yes, I've tested stuff and read the scientific papers, but ultimately take everything I say with more than just a grain of salt! So if you are looking for trouble, just do as I say or even better, do something I said years ago!

Offline LDTRONIX

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Re: Led exposure unit?
« Reply #101 on: January 15, 2013, 06:13:09 PM »
pierre,

My thoughts are with you and your family, take your time.

They called the inventor of AC electricity (TESLA) names, even fried dogs in the street to prove AC was bad.

Offline alan802

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Re: Led exposure unit?
« Reply #102 on: January 15, 2013, 07:04:05 PM »
Alan, if it really does the trick, would be better than replacing that $600 bulb from time to time huh  :P

Speaking of that, our light units are about 25-30 seconds right now...meaning I need to buy another bulb before things start getting crazy around here.  Sad part is, our customers have all decided to stop paying us so that thing called cash flow is almost non-existent right now.  Happens this time of year like clockwork though.
I would rather be exposed to the inconveniences attending too much liberty than to those attending too small a degree of it -T.J.
Those who expect to reap the blessings of freedom, must, like men, undergo the fatigues of supporting it -T.P.

Offline LDTRONIX

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Re: Led exposure unit?
« Reply #103 on: January 15, 2013, 11:24:29 PM »
alen  you said
Make one big enough for two frames at a time and if it can do one of our 110's with a 200 micron stencil in under a minute


It is possible...... close to that now, just got to do it 1 at a time.      10-12 sec x2 screens= 20-24 sec total exposure time for both frames..

Splitting hairs...  but it is extra work to do it twice...
They called the inventor of AC electricity (TESLA) names, even fried dogs in the street to prove AC was bad.

Offline Gilligan

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Re: Led exposure unit?
« Reply #104 on: January 16, 2013, 09:39:17 AM »
Vacuum draw down is 20 seconds right?  So that's 40 seconds right there as well.  20 seconds if you can expose them 2 up.

I still would like some specs on the light we are outputting, the angle at least.

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