[smeared ink]

I have a RYONET 25x36 rx exposure unit. I am having so much trouble with it. I have been messing with it for about 6 months now. It has a lid. It came with a foam pad. At first I was using the foam on top of screen and putting two paint cans on each side to even out the pressure...leaving the lid open. That didnt work. Then I tried jst closing the lid and latching it, but not snapping it down, becuase it wouldnt. It exposed perfect on the middle protion of the screen. But the two smaller grapcis that were on the top and bottom of the screen would not wash out. There were over exposed or something. I downloaded and am using the eposure table from ryonet. Any ide what im doing wrong? Thanks.

 

[D3L0C4T3D]

What is your exposer time?

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[ericsson2416]

I have same unit and expose for 8:40 then wash out. If your design aren't washing out consider the negatives. Are they dark enough? Can you see light through them holding them up?

 

[smeared ink]

8:40?!?! wow. The exposure table i downloaded for ryonet says 2:30-3:00 for 230-300 mesh i was using 300 mesh exposed for 2:45 like i said the middle image came out great the top and bottom wouldnt come out all the way. My films are also from ryonet use and espon printer i also bought from them. Black magic ink, cant see threw it at all. Im thinking it has something to do with the foam not being pressed down equally on the sides and not sure how to accomplish this.

 

[D3L0C4T3D]

Can you post a pic? Its crazy that you bought a expozer unit fof hundres of dollars and it takes you minutes to expose and I have a homd built unit that exposes in 40 seconds flat

 

[selanac]

What did Ryonet Say?

 

[smeared ink]

a picture of the unit?

 

[D3L0C4T3D]

Ghe scfeen and your transfer. Question or you putti.g the screen on the unit flat side down?

 

[ericsson2416]

I was wondering about that exposure time. Is it possible for those units to be defective in some way? I use films and emulsion from Ryonet. Expose them with film down. When I first started exposing and following the table the screen would wash at based on their provided table. Up at almost 9 minutes is the only way to get it to hold the design. Interesting. Am I the only one with an exposure to like that? Could just be smeared ink and I get times like these with the Ryonet units.

 

[Tj Ryonet Tech]

Make sure you look at your films first. They need to black for a good exposure. Then place the film on the flat side of the screen and place that down on the glass. then put the foam in the interior of the screen and close the lid. This will give you even compression across the screen. If the foam is too big for the interior cut it down to fit snuggly inside. Depending on what emulsion you are using your exposure times will vary.
The dual cure emulsions expose for about 4 minutes with a 1 and 1 coating. The pre-sensitized will be in the 90-120sec minute ranges.

 

[ericsson2416]

Make sure you look at your films first. They need to black for a good exposure. Then place the film on the flat side of the screen and place that down on the glass. then put the foam in the interior of the screen and close the lid. This will give you even compression across the screen. If the foam is too big for the interior cut it down to fit snuggly inside. Depending on what emulsion you are using your exposure times will vary.
The dual cure emulsions expose for about 4 minutes with a 1 and 1 coating. The pre-sensitized will be in the 90-120sec minute ranges.

That's exactly what I do with dual cure emulsion with 1 and 1 and it takes 8:40 at least or the screen is really slippery on the inside (ink side).

 

[Tj Ryonet Tech]

do you have the factory glass or replacement glass and how old are the bulbs in the unit?

 

[ericsson2416]

Factory glass (what came with the unit). Been doing it that way for the last three years (that is how old the bulbs are). From day one that was my exposure time. Out of the box I wasted a few screens trying the 3-4 minute exposure time as recommended. Just kept adding time till the emulsion stuck.

 

[Tj Ryonet Tech]

That is definitely strange. Did you call in when you got the unit? I think you definitely need new bulbs. Where are you located?

 

[ericsson2416]

Didn't call, I'm a screen printer so tried to figure it out on my own first. Just accepted that was how it was going to be and ran with it. I'm in WA State - Oak Harbor.

Didnt intend to take over this thread, was Smeared Ink able to get his time to work? Is he in the same boat with time?

 

[smeared ink]

I have factory everything. I bought a huge business package from you guys, my press, exposure unit, wash out station, vinyl cutter, etc all came from you guys. I have had it about a year but it hasn't been used much. Is there anyway to get the bulbs replaced?
desaree[USER=824]@sme[/USER]aredinkapparel.com

 

[selanac]

Looks like you're in the right direction now. TJ should be able to help.

You should contact Ryonet Directly.

 

[ScreenFoo]

I'm pretty sure it's the different emulsions tripping you up--If you're talking about a white 110, or 125, eight to ten minutes was about what I did on a UV fluo unit.

Although I have no experience with this particular unit--my one pot to dual cure times average around 1:6--i.e. if two minutes properly exposes a photopolymer, try twelve for a dual cure.

 

[sben763]

With dual cure 110 I am at about 7 min with single I am at 2:30 min 110 mesh. My unit is about 1-2 year old and has a only a few hours total time on it. The bulbs are already getting black ends. I have 2 units the second has many hours same exact unit and the exposure times are almost half as posted above. I wonder if they had some bad bulbs also. I refuse to spend the money to replace bulbs on a unit that has only 2-3 hours on it. My 4 year year old unit has many many hours no black ends

 

[selanac]

sben, if they had bad bulbs, wouldn't they replace them for you?