nativeera

I have a job that needs to be done by tomorrow. I am a beginner. I have coated my screens and let dry for 2 hrs. Burn my image into my screen for 4 minutes under a 500 watt halogen light.
Then.....
I spray a mist from a spray bottle on both sides, let stand for one minute.
Then....
After a min, i go to wash out the image and then most of the emulsion washes out.

Please help, what must i do, i coated 5 other screens and i don't want this to happen again. What's going on with this?

Please help me!!!

Thank you.....

 

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midwaste

What emulsion are you using? 5 mins is likely much too short for exposure time with a 500W halogen. Try doubling it and working from there.

 

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nativeera

I will try this... But why is the emulsion washing out when comes the time to expose my image?

My Image exposes Fine and so does the rest of the screen..lol... so now it's like my screen never had any emulsion on it........

(LET ME REPHRAZE THIS, THE ONLY EMULSION THAT SHOULD BE WASHING OUT IS FOR IMAGE TO BE EXPOSED ONLY, NOT THE REST OF WHATS AROUND THE CLEAR IMAGE)

MY EMULSION CAME IN MY START UP KIT....

HERE ARE THE DETAILS:

ULANO - PROCLAIM
MULTI PURPOSE DUAL CURE EMULSION

 

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midwaste

You have already exposed the screen, using whatever you are using for your positive, correct?

If the rest of the emulsion on the screen is washing out, it is because not enough UV light penetrated it to expose it correctly.

I use a 500W halogen, and from using an exposure test and Ulano QX-1 emulsion, my correct burn time is around 18 minutes.

 

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nativeera

Quote: Originally Posted by midwaste You have already exposed the screen, using whatever you are using for your positive, correct? If the rest of the emulsion on the screen is washing out, it is because not enough UV light penetrated it to expose it correctly. I use a 500W halogen, and from using an exposure test and Ulano QX-1 emulsion, my correct burn time is around 18 minutes.

well it's not my image problem, it's when i goes to wash out my image, all the emulsion washes off the screen... my image comes thru fine....

 

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midwaste

Um, what? How can the emulsion all wash off the screen, but your image comes through fine?

 

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nativeera

LET ME REPHRAZE.....

You see if my image washes out fine, then I say my emulsion washes off too... so in this sense, it all washed out fine........ why can't the emulsion just stay on the screen and let my image be....

 

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midwaste

Because you didn't burn it long enough. A 500W halogen takes much longer than other light sources, because it puts out less UV light than say, a metal halide bulb.

UV light will make the emulsion harden except in the areas that your positive covers.

What did you use to make your image positive?

 

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nativeera

i will try this for how many minutes? I am using vellum paper..... and i'm sorry for not understanding you... i was trying to be a cartoon....

 

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Solmu

Are we missing something else going on here? I feel like I'm reading Who's on First?

It doesn't sound like anything other than underexposure...

__________________
Ceci n'est pas une autographe.

 

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midwaste

You will have to experiment to get decent results with vellum and a 500W halogen. However, it's going to be a while, I would start at 15 mins and see what happens. You will know when you are getting closer, as the image will wash out and the outside will stay, but the edges will be soft and will curl up. If you burn a bit longer than that, you will be close to a correct burn time.

However, depending on what printer you are using, you may end up chasing yourself in circles if the black printing is not dark enough. I recommend getting some transparencies.

LOL Solmu, indeed. What we have here, is a failure to communicate.

 

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nativeera

so where the paper material is touching as well, it won't wash out?

 

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dextertutu

i've been printing since xmas and use non branded emulsion with 500w halogen with glass cover removed for approx 5.30-6.00 mins. at a height of 22 inches from lamp to screen and have no problem. its a case of trial and error to what works right for you as the other people have said. hope this helps.

 

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