MESH+HALTONE HELP

All about screen printing mesh. This is where you can discuss mesh counts, nomenclature and how to choose the correct mesh count for the print job.

Moderators: Shamax, Leadfoot, ApeShirt, Catspit Productions

foreverx24
Posts: 3
Joined: Sun Dec 02, 2012 8:23 pm

MESH+HALTONE HELP

Postby foreverx24 » Thu Dec 06, 2012 8:46 pm

I have a 155 screen and I have set my half tones to 35 lpi. EVERY TIME I print it its 90% black and I lose pretty much all my half tone detail. What is going wrong?...Any ideas?


User avatar
Catspit Productions
Site Admin
Posts: 1795
Joined: Wed Mar 21, 2012 10:47 am
Location: Phoenix, Arizona
Contact:

Re: MESH+HALTONE HELP

Postby Catspit Productions » Sat Dec 08, 2012 9:36 am

Well even though you have a 35 lpi that may burn okay on a 110 it’s probably flooding out when you print. There are 2 things you can try.

First you could simply try to reduce the pressure on the print stroke and eliminate the flood stroke altogether by just pulling some of the ink with the print stroke. That will lessen the volume of ink being printed and should help keep things from flooding out but you may have to wipe the back of the screens every few prints to keep the resolution.

The other thing you can try would probably be best. Move up to a 200 or a 230 mesh count. When you do that you can even bump the lpi up to 40 or 45 which will give you a much better halftone with nicer gradients.

If you are printing with black ink which tends to be thinner with plastisol inks and water based inks it will be difficult to get a decent print using such a low mesh count with such big dot. That scenario is easily flooded when printing as stated above.

I hope that helps some, good luck and thanks for posting!
Jonathan Monaco
Catspit Productions, LLC
Learn how to screen print tee shirts!

http://catspitscreenprintsupply.com/
http://www.youtube.com/user/CatspitProductions

User avatar
ppdlao
Master Screen Printer
Posts: 139
Joined: Fri Jul 20, 2012 9:18 am
Location: Villahermosa, Tabasco, México.

Re: MESH+HALTONE HELP

Postby ppdlao » Mon Feb 04, 2013 1:26 pm

Catspit Productions wrote:try to reduce the pressure on the print stroke and eliminate the flood stroke altogether by just pulling some of the ink with the print stroke. That will lessen the volume of ink being printed and should help keep things from flooding out but you may have to wipe the back of the screens every few prints to keep the resolution.


Jon reading at this, a question poped up in mind, :?: do we have to flash each process color when printing CMYK color sep? or should we print it wet on wet? .. just curiosity.. I'm not printing any CMYK any soon... YET! :)

thanks in advance for your response buddy!

ApeShirt
Master Screen Printer
Posts: 382
Joined: Fri Apr 13, 2012 1:11 pm
Location: Lansing, MI
Contact:

Re: MESH+HALTONE HELP

Postby ApeShirt » Mon Feb 04, 2013 6:47 pm

ppdlao wrote:
Catspit Productions wrote:try to reduce the pressure on the print stroke and eliminate the flood stroke altogether by just pulling some of the ink with the print stroke. That will lessen the volume of ink being printed and should help keep things from flooding out but you may have to wipe the back of the screens every few prints to keep the resolution.


Jon reading at this, a question poped up in mind, :?: do we have to flash each process color when printing CMYK color sep? or should we print it wet on wet? .. just curiosity.. I'm not printing any CMYK any soon... YET! :)

thanks in advance for your response buddy!

Pepe, you need to print wet on wet when doing 4- color process (CMYK). This allows the inks to "mix" as printed in order to make different colors.
Greg
If you're not going to go all the way then why bother going at all.
ApeShirt Apparel Printing, LLC

User avatar
ppdlao
Master Screen Printer
Posts: 139
Joined: Fri Jul 20, 2012 9:18 am
Location: Villahermosa, Tabasco, México.

Re: MESH+HALTONE HELP

Postby ppdlao » Mon Feb 04, 2013 7:11 pm

ApeShirt wrote:Pepe, you need to print wet on wet when doing 4- color process (CMYK). This allows the inks to "mix" as printed in order to make different colors.


Really!! .. what you're seaying makes sense! thnks buddy :)

User avatar
Catspit Productions
Site Admin
Posts: 1795
Joined: Wed Mar 21, 2012 10:47 am
Location: Phoenix, Arizona
Contact:

Re: MESH+HALTONE HELP

Postby Catspit Productions » Tue Feb 05, 2013 7:37 am

Yes, I agree. Most often CMYK will be printed wet on wet for various reasons.

Other types of halftones may be flashed depending on the print result desired.
Jonathan Monaco
Catspit Productions, LLC
Learn how to screen print tee shirts!

http://catspitscreenprintsupply.com/
http://www.youtube.com/user/CatspitProductions

WeEmptyRooms
Posts: 3
Joined: Mon Apr 29, 2013 6:19 pm

Re: MESH+HALTONE HELP

Postby WeEmptyRooms » Mon Apr 29, 2013 6:28 pm

regarding printing CMYK Wet on Wet does anyone else have issues with the ink sticking to the back of the screen?
I am using water based inks and this has been an issue after doing several prints. It then pulls the shirt up off the board.

User avatar
Catspit Productions
Site Admin
Posts: 1795
Joined: Wed Mar 21, 2012 10:47 am
Location: Phoenix, Arizona
Contact:

Re: MESH+HALTONE HELP

Postby Catspit Productions » Mon Apr 29, 2013 7:31 pm

There will always be a certain amount of “pick up” when printing wet. Using high quality low pick up inks is a great help but ultimately you’ll need to use enough spray tack to keep the shirt put.

You should also add some retarder which will slow the drying time down for your inks.
Jonathan Monaco
Catspit Productions, LLC
Learn how to screen print tee shirts!

http://catspitscreenprintsupply.com/
http://www.youtube.com/user/CatspitProductions

OffsetnScreen
Senior Screen Printer
Posts: 63
Joined: Wed Feb 20, 2013 3:35 pm

Re: MESH+HALTONE HELP

Postby OffsetnScreen » Fri Jun 07, 2013 12:31 pm

I can compare it to offset printing, where each successive ink that goes down, the ink tack is less and less, whereas, your "soupiest"ink was the last one down. This thread is probably the most informative thread that I have come across so far on this subject. Thanks for the posts.


Return to “Choosing The Mesh Count”

Who is online

Users browsing this forum: No registered users and 1 guest