Screen Printing Darkroom – Learn The BasicSefan Mertes
How many times, i went to screen printing shops, who have very expensive printing machines and a look at there Darkroom, been just a disaster..
Here is my latest example of a Darkroom what is copy past to many workshops i visit.
Screen Printing Darkroom
A Darkroom, means not that you have to work in the Dark. There is no need to paint the wall black, it’s not a gathering place for people who are tired and need a nap or even play hide and see.
The Darkoom is the one most important Room in your workshop.
Here it starts, to produce printing frames, what will last in production. Where you get the most out of your artwork. If the frames are done well, you have the joy to print smart and beautiful. And it dedicates if your production runs smooth, or if you have brake downs and production nightmares.
The Darkroom, is a climate controlled area, with a humidity level of 30-40% (MAX 50%)! The first tool, what have to be in this Room is a Hygrometer.
It’s a low cost tool, what you will find in many hardware store. The reason why you would need one, is that your FoTo Emulsion, needs to be dry. And as Foto Emulsion acts like a sponge and absorb water from the Air, you better make sure, that your Humidity stay’s below 40%. A Hydrometer is a quick indicator, to show you what is going on.
If you are from a area, where the humidity is low all year, that’s great. As you would not need the next tools to control the humidity level and save some money.
To control the Humidity Level
, is mostly used a Air Conditioner or dehumidifier, the size of this units are depending, on your room size in cubic meter (m3). Ask a expert, what would be the right unit for your room. You would need them running 24Hours, as your prepared screens will stay properly over night to. If you use a Air Conditioner, use the settings to remove humidity “Dry”, not the modus “Cold”. As we do not need a cold room, we just need a dry room and this settings will save a good amount on your electricity bill.
Keep the Room closed! How many times i see, that companies install a Air Conditioner and then the entry door, stay’s permanently open. It does not make sense, close the doors and windows!
Not only you would like to have a low humidity level in your Darkroom, you want it Dusk Free to. Wet Foto Emulsion, seems to act like a magnet to Dusk. Use a Aspirator to get the Dusk out, but please, do not use a Water Aspirator, use a dry unit. I have seen it with my own eyes, that people, invest in a dehumidifier and then use a water aspirator, to remove the dusk. =) THERE IS NO WATER IN THE DARKROOM.
your Darkroom! Paint the walls white, install yellow safety light, with low or better non UV radiation. You need to see well, in this Room. White walls don’t create UV, that’s a reason, why you don’t need dark painted walls, like in a dance club where you meet your first time girlfriend. Darkroom Safty comes with proper light to!
To dry your Photo Emulsion
, you would need a heater, mostly used in a Box, where you dry your screens. Don’t overheat your frames, 30-40C should more then fine.
This will help you to create better long lasting frames, because:
- no dust in emulsion = less pinholes
- proper humidity level = better frame developments, durable Foto Emuslion, more easy reclaiming
- the Right Light = much better working area, no exposure to frame before development
- Foto Emulsion needs a humidity level of 30-40%
- Darkroom is a climate controlled area
- A Darkroom is a Dusk Free Zone
- Light is very important, but without UV radiation
- The must have, basic tool is a Hydrometer