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Darkroom.........................

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Old January 18th, 2012, 12:34 PM   #11 (permalink)
RobertWBarnes RobertWBarnes is offline
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Default Re: Darkroom.........................

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Originally Posted by srimonogramming View Post
If my post confused them then they don't have much hope in this industry, or life in general. I told them to put the screen in safe light quickly after coating, so what's the problem with my statement?
I think people will be confused ... imagine that confused people in screen printing :-o

I have been in shops where they coat the screen in ambient light -then- slide them into a drying cabinet (that is sitting in ambient light) ... so ... when they open the drying cabinet to insert the last screen on the bottom shelf the top screens have already dried -and- they are now being exposed to ambient light ... so ... lets assume that they coat all of them super-duper fast :-p

No matter what happens next ... they still will need to remove those dried screens at some point from the cabinet -and- if they are removed into ambient light then that is the problem ... once again there will be the folks that say " I do it all the time " -but- those folks don't fully understand exposure ... hence I stand on my statement that "Your statement will confuse people" <--- whether they "have much hope in the industry, or life in general." (also your words)

At the end of the day ... the number one sin in our industry is the lack of screen making knowledge throughout the world ... don't get me started ;-) LOL
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Old January 18th, 2012, 01:22 PM   #12 (permalink)
inkman996 inkman996 is offline
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Default Re: Darkroom.........................

Then if people do it all the time day in day out, Brandt for example. They do it successfully yet according to you they do not know what they are doing.

We are not morons but unlike you we do this for a living we understand today's materials better than the machine guy that visits many completely different shops and has a totally different point of view than the day to day screen printer.

Laughable (your choice of word) is a self proclaimed guru that tells people either what they are doing is wrong or they do not understand what they are doing, YET THEY STILL DO IT SUCCESFULLY!
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Old January 18th, 2012, 01:24 PM   #13 (permalink)
inkman996 inkman996 is offline
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Default Re: Darkroom.........................

BTW Alan's post made perfect and underst and able sense. What Any intelligent person will get from his statement is that today's emulsions are forgiving when wet they are at their least sensitivity but once dried they are at the peak of sensitivity, BUT even when dry they are still forgiving long to work with if you choose to work in typical shop lights.
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Old January 18th, 2012, 01:37 PM   #14 (permalink)
Prosperi-Tees Prosperi-Tees is offline
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Default Re: Darkroom.........................

I figure if it takes 6 minutes for a screen to get exposed being blasted with UV blacklight the 20 seconds I have it exposed to weak ambient light would not present a problem.
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Old January 18th, 2012, 01:59 PM   #15 (permalink)
GraphicDisorder GraphicDisorder is offline
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Default Re: Darkroom.........................

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Originally Posted by inkman996 View Post
Then if people do it all the time day in day out, Brandt for example. They do it successfully yet according to you they do not know what they are doing.

We are not morons but unlike you we do this for a living we understand today's materials better than the machine guy that visits many completely different shops and has a totally different point of view than the day to day screen printer.

Laughable (your choice of word) is a self proclaimed guru that tells people either what they are doing is wrong or they do not understand what they are doing, YET THEY STILL DO IT SUCCESFULLY!
Ya we have no problems with screen coating, screen burning, or exposure times. Ill let our work speak for its self...

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Old January 18th, 2012, 02:33 PM   #16 (permalink)
RobertWBarnes RobertWBarnes is offline
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Default Re: Darkroom.........................

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Originally Posted by Prosperi-Tees View Post
I figure if it takes 6 minutes for a screen to get exposed being blasted with UV blacklight the 20 seconds I have it exposed to weak ambient light would not present a problem.
Agreed ... however ... a lot of shops use a pure photopolymer ... as an example:

if you were using a high mesh count -and- your proper exposure were say 30 light units -and- the moving of the screen thru ambient light were say 1 -or- 2 units -then- you are pre-exposing the screen to 1/30 -to- 1/15 of the exposure ... also ... if there is a period of delay between the ambient light shock -and- the actual exposure this can cause the chemical cross linking to begin -and- somewhat accelerate during the wait :-@

Hey ... what do I know I am just some machine guy ;-) LOL
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Old January 18th, 2012, 02:37 PM   #17 (permalink)
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Default Re: Darkroom.........................

yawn....
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Old January 18th, 2012, 02:46 PM   #18 (permalink)
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Default Re: Darkroom.........................

Just for the record I coat all my screens in the shop with the lights on, not in the darkroom. I also bring all the screens out for a job when I'm regestering them on my bible board. By the time I set them up and burn them some have been out of the dark for 10-15 min. Like mentioned above a few min out of the dark room is nothing compared to a few min of high intensity uv from the exposure unit.

As for cleanliness, sure you want things to be neat and clean but we are not building microchips or satellites.

It's not like it's magic emulsion that cures instantly when exposed to light. Besides there are no uv proof lights, even the best emit some uv energy

As for the heat I use it to accelerate the drying of reclaimed screens, fresh emulsion and ones we just exposed. It also helps keep the room dry and the humidifier won't need to work as hard. FYI I do have a filter to keep dust out of the dry box.
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Old January 18th, 2012, 02:55 PM   #19 (permalink)
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Default Re: Darkroom.........................

Brian, what do we all know, we ACTUALLY print, right? LOL
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Old January 18th, 2012, 03:08 PM   #20 (permalink)
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Default Re: Darkroom.........................

Barnes, when was the last time you made a set of screens and printed? You realize we are talking about t-shirts here right? We are not going for 85 line halftone fine art prints.
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