Ink/Water Balance

[Alex Arriaza]

im trying to understand why the pressmen use to much water on the impression, it seems like a big problem because impressions came out opaque, can someone please help me understand the ink/water balance needed for a good impression.

[machineguy]

Sounds like you have a chemisrty problem, maybe not a match between the ink you are using, or the ph is wrong, hats a whole differnet roller pressures, are you using UV? thats a whole differnet ball game

Martin Dawson
dawson-machinery.com
702-542-7849

[OffsetGuy@presstechnician.com]

Hey machine guy do you sell UV Coaters? I need one for an AB Dick press ASAP man.

[machineguy]

how wide is the AB Dick,

[Alex Arriaza]

No im not using UV, this is what im using in terms of ink and fountain solution.
- Resista inks
- All star fountain solution without alcohol 3%
- 1600u
- 4.2PH
- 16 C degrees

[machineguy]

- Resista inks
- All star fountain solution without alcohol 3%
- 1600u
- 4.2PH
- 16 C degrees
You say you are to wet, using alcohol reduces the surface friction, you should be able to cut the water way back, also is the fountain solution your using recomended for that ink , I like to match chemisrty to ink. I would really have to see what substrate you are printing on and several other factors, including roller pressues
Martin

[Alex Arriaza]

Thats exactly what i mean, how can i tell that, i need more info about it, like what is the type of ink that can be used with certain foutain solution, is there thumb rules to this subject_?

[OffsetGuy@presstechnician.com]

It is a 9800 which coats a 12 X 18 sheet.

[Erik Nikkanen]

im trying to understand why the pressmen use to much water on the impression, it seems like a big problem because impressions came out opaque, can someone please help me understand the ink/water balance needed for a good impression.

Alex,

Just to clarify your question. What do you mean by "opaque"? Something that is opaque normally means that light can not go through it. Opaque is the opposite of transparent.

[machineguy]

Your Ink company can should be able to help, i can only trouble shoot what i can see, maybe you need to make some changes...all the companies will provide fre samples..
Martin
702-542-7849
dawson-machinery.com