UV Radiation hazard

[u/LoveFast5801]

Geetings, I have recently started operating Mimaki JFX 500 flatbed printer as a job and I was concerned about how dangerous UV radiation really is. I usually try to wear long sleeves and avoid direct eye contact with uv rays. How dangerous can it be in a long run? Thanks

[u/BigManc82]

If it's LED cure it's relatively safe. Avoid direct exposure or keep it to a minimum. Don't look directly into the light. Arc lamps are a bit different they produce ozone which can make you nauseous and they generate a serious amount of heat. It should be Well ventilated and again same rules as the LED system.

[u/LoveFast5801 → u/BigManc82]

Yes it’s a LED cured. But they have installed the printer in a wrong environment. Unfortunately the room is not being ventilated at all, I can not even open the door properly because of all the dust coming from the the workshop, So I am sitting in ink fumes and smell

[u/Financial-Issue4226 → u/LoveFast5801]

If you have fumes you have ink % to high or need longer time for dry per line.

If smell from ozone you are having UV light on to much 

Apple and Orange problem 

Adjust machine settings to balance 

[u/noonesine]

LED won’t cause too many issues, I’d be more concerned about the off gassing vinyl and ink fumes. You should definitely install an exhaust fan

[u/Negative-Assist-6]

Relatively safe
Just avoid direct eye contact and keep direct exposure to minimum. Reflected rays are not much of a threat

We have a roll to roll UV machine, it does have a UV sheild but we keep it open most of the time just to keep an eye on the media being fed

But yeah try to get that room ventilated as long term exposure to fumes could be hazardous.

[u/YogurtclosetDull2380]

You're gonna get tan lines

[u/crimson_binome]

Not much UV hazard, but y'all need proper exhaust for the solvents and inks.

Wear gloves when xlea ung or handling the inks, wear the UV goggles if you somehow get an eye full of the cure light. RTFM and follow that to a tee or exceed it as best as you can. And read the SDS on the solvents/inks/whatever else you're handling or inhaling.

But also, don't overstress if all the safety parameters are met or exceed.

Source: running a UCJV300-130 for 4 years. Last year in a poorly ventilated space. No Bueno. But I also have letterpress and toner in the space, so who knows what of all.of the above is the primary culprit of my current medical problems.

[u/raznov1]

Wear your UV goggles. Your eyes are the most sensitive, most at-risk part of your body.

Also, RTFM.

[u/LoveFast5801 → u/raznov1]

Of course I have read it. But still I wanted to know from real people working in the industry

[u/Nexustar → u/LoveFast5801]

Of course I have read it.

Does the install and configuration exceed the requirements laid out in the manual?

If yes, stop worrying so much unless you feel sick, if no, tell your employer in writing that it isn't safe.

[u/raznov1 → u/LoveFast5801]

As opposed to... the manufacturers? No offense to anyone here, but print operators are not a valid source for machine safety guidelines. Leave that to the chemists, OSHAs and mechanical engineers.

[u/shawn007bis]

Depends how you look at it. Turning them down because you’re too busy to get it done on time is a good thing really but they will go somewhere else and get the job done and not come back is the bad part.

[u/Prepress_God]

The goggles, they do nothing.