Author Topic: How bright is your Dark Room?  (Read 7673 times)

Offline Screened Gear

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How bright is your Dark Room?
« on: November 02, 2011, 03:08:47 PM »
I just bought new yellow bug lights for my dark room. I only had one light in there before and it was just too dark. It made it hard to clean out detail in the screen. (new dark room 2 months ago.) I put two yellow bug lights in there and now it is really bright. I am a little worried about the exposed screens in the room. I have a cabinet for my manual screens but I still need to build one for the auto screens. Should I be worried? I know a 60 watt white light would take...what 3 hours to expose a screen. I just want to make sure I don't have and issues.



Offline mk162

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Re: How bright is your Dark Room?
« Reply #1 on: November 02, 2011, 03:12:03 PM »
Did you buy fluorescent bug lights?  I find the incandecents to be more harmful than just CFLs.  I have yellow tubes over my lights and it's totally fine.  I hang around in there sometimes just to get a tan.

Offline Screened Gear

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Re: How bright is your Dark Room?
« Reply #2 on: November 02, 2011, 03:25:52 PM »
They are the incandescents. I had a CFL in there but it made the emulsion look black and hard so see thru. It was also about half as bright as the incondecents.  The room is 10 x 12 with my washout booth, exposure unit, 1 screen cabinet, screen rack for the auto screens and registration unit for the MHM. Its nice and bright in there now I just want to make sure the screens just sitting in there are not getting exposed.

Offline jsheridan

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Re: How bright is your Dark Room?
« Reply #3 on: November 02, 2011, 03:31:03 PM »
get rid of the bug light.. seriously it's a joke..

Get yourself  a 2 or 4 footer double bulb work light from home depot, T5 8 or 12 who cares.. it's like 30 bucks or something plugs into the wall and comes with chains and everything to hang from the ceiling or bolt it to the wall.

Then buy some CLEAR UV blocking light sleeves.. someone made a post here the other week and put a link in the post.. their like 5-8 bucks a sleeves.
**here you go.. link to thread. http://www.theshirtboard.com/index.php?topic=1826.0

Put the light up, put on the sleeves and turn that baby on...

BAM!! hows that for seeing what the heck you're doing  8)
« Last Edit: November 02, 2011, 03:38:22 PM by jsheridan »
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Offline Screened Gear

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Re: How bright is your Dark Room?
« Reply #4 on: November 02, 2011, 03:38:54 PM »
get rid of the bug light.. seriously it's a joke..

Get yourself  a 2 or 4 footer double bulb work light from home depot, T5 8 or 12 who cares.. it's like 30 bucks or something plugs into the wall and comes with chains and everything to hang from the ceiling or bolt it to the wall.

Then buy some CLEAR UV blocking light sleeves.. someone made a post here the other week and put a link in the post.. their like 5-8 bucks a sleeves.

Put the light up, put on the sleeves and turn that baby on...

BAM!! hows that for seeing what the heck you're doing  8)


I saw that post also. I think that would be perfect. I do like having the yellow light so I know its safe. But your right white light is a ton better.

Offline Sbrem

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Re: How bright is your Dark Room?
« Reply #5 on: November 02, 2011, 03:41:31 PM »
I've always used standard fluorescents, 8', with the yellow sleeves, no problems at all. I thought you meant a real dark room, like for photography. They need to be pretty dark, but who does that anymore?

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Offline Gilligan

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Re: How bright is your Dark Room?
« Reply #6 on: November 02, 2011, 04:00:58 PM »
Hey, I knew I was good for something!

Be sure to read sweetts post on the second page (here's a link)
http://www.theshirtboard.com/index.php?topic=1826.msg19302#msg19302

Those clear tubes still let some spectrum through... so I fear you will be going from bad to worse with your concerns.  That said, he did say the AMBER sleeves were great.

Probably wouldn't be terrible to put some of the clear tubes in there and use them occasionally for inspecting screens you are washing out.  I plan on putting these behind my washout booth... If the Amber isn't bright enough I might do two sets, one amber for basic operation and one white for when I'm reclaiming or for final inspection.

Offline Screened Gear

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Re: How bright is your Dark Room?
« Reply #7 on: November 02, 2011, 04:09:25 PM »
Hey, I knew I was good for something!

Be sure to read sweetts post on the second page (here's a link)
http://www.theshirtboard.com/index.php?topic=1826.msg19302#msg19302

Those clear tubes still let some spectrum through... so I fear you will be going from bad to worse with your concerns.  That said, he did say the AMBER sleeves were great.

Probably wouldn't be terrible to put some of the clear tubes in there and use them occasionally for inspecting screens you are washing out.  I plan on putting these behind my washout booth... If the Amber isn't bright enough I might do two sets, one amber for basic operation and one white for when I'm reclaiming or for final inspection.


Well after reading that it sounds like the clear sleeves are worthless. I am going to stick with my yellow bug lights for now. I read somewhere that the yellow is what blocks the UV. I even saw someone use Crylone Yellow spray paint to make white bulbs yellow and they worked just fine.

Offline Gilligan

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Re: How bright is your Dark Room?
« Reply #8 on: November 02, 2011, 04:15:20 PM »
They do make an amber sleeve.  Still might give you more light and might be even safer (certainly cheaper in the long run).

Offline stitches4815

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Re: How bright is your Dark Room?
« Reply #9 on: November 02, 2011, 04:18:31 PM »
My coated screens are stored in a dark room.  Just a few feet away is my exposure unit with a 60 watt light above.  After exposure I walk with screens in hand, to the sink,  through a room with indirect sun light coming through.  Above the sink is another 60 watt bulb.  I have never had any problems with these light sources messing with my screens.

Offline tpitman

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Re: How bright is your Dark Room?
« Reply #10 on: November 02, 2011, 05:22:13 PM »
I use the fluorescent bug lights in my washout and my darkroom. Certainly bright enough to work by. Funny thing is, I wash out in the bathroom in my garage, and I always leave the  window open unless it's really cold. I had a screen I'd exposed upside down, and set it to one side to reclaim later in the wash area. About two weeks later I need to reclaim it, so it hit it with some water before spraying with remover, and damned if the image didn't wash out after sitting there all that time. No direct sunlight, but filtered daylight and the bug light for hours at a time. This was with Ulano QX-1.
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Offline mooseman

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Re: How bright is your Dark Room?
« Reply #11 on: November 02, 2011, 06:46:18 PM »
I think light is way over rated..we coat in an open room under 4 foot fluorescents. lights and 15 feet from a 5 x 8 foot picture window that faces north.
we store screens in a cabinet that is light tight . After exposure we walk to wash out in the open room and past one window facing south, the window faces south I don't.
we don't take any special precautions except to avoid direct sun.
We use Ulano QXT .
We have never had a problem. I have even gone as far to place a soon to be exposed screen aside while I readjust the film on the exposure unit.
I have to say we have never had a problem really . QXT is known as ultra fast exposure so i really don't know what to say except we don't have any problerms and hold some raelly fine details.
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Offline Screened Gear

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Re: How bright is your Dark Room?
« Reply #12 on: November 02, 2011, 06:59:42 PM »
When I worked out of my garage my pressure washed blew up so I had no water in my washout unit. I had a job that I had to get done so I just grabbed the screen and ran outside in a shaded spot to wash it out with the hose and I got nothing. It would not wash out anything. I could see the design for about 15 seconds then that even went away. I figured out if i took a spray bottle and wet the screen really good let it sit for about 30 seconds I could get outside and wash it out with out to much trouble. (so glad I don't have to do that again) I use Aquasol HV. Its great stuff but you have to have your times right. 25 seconds on my photo sharp exposure unit with 10% OEM.

Offline jsheridan

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Re: How bright is your Dark Room?
« Reply #13 on: November 02, 2011, 07:02:02 PM »
You can't just use regular ole clear sleeves, those are safety sleeves and they DO NOT block uv light.

they have to be rated for blocking UV light and the ones I've used, did not expose screens over time..

Better check those sleeves again and make sure they are the correct product.

http://www.uvprocess.com/product.asp?code=FILTER+++I

Using the above with a standard fluorescent bulb that emits under the 300nm range.. not a speck of UV llight will get past the clear sleeve.
« Last Edit: November 02, 2011, 07:06:06 PM by jsheridan »
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Offline Fresh Baked Printing

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Re: How bright is your Dark Room?
« Reply #14 on: November 02, 2011, 07:06:56 PM »
I use the incandescent bug light. No problems. Easy.
During setup, I'll have the emulsion/cap inches away from the 60w yellow bug light for half hour or more with no issues.
50% of the time I'm 100% right.
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