TSB

screen printing => General Screen Printing => Topic started by: Donnie on March 21, 2012, 08:24:21 PM

Title: WTF?????
Post by: Donnie on March 21, 2012, 08:24:21 PM

Last screen will not register to save my ass. Films line up perfect.  The screen is not warped... Burn another.. bam! Lines up. LONG DAY!!!

Title: Re: WTF?????
Post by: Frog on March 21, 2012, 08:49:13 PM

Could the mesh have either relaxed or stretched since it was shot?

Title: Re: WTF?????
Post by: mooseman on March 21, 2012, 08:56:11 PM

WTF x 2 had the same problem here too TODAY, lousy two color job, dirt simple 2 films good.... one screen bad >:(

can't see anything in the bad screen, flat, 35Nm just doesn't fit. Reburn & test print good by 6:00 PM hope the shirts follow tomorrow.
Pizzed me off ............must be something in the water

Title: Re: WTF?????
Post by: Prosperi-Tees on March 21, 2012, 09:25:45 PM

Yep somethings in the air or water, that happened to me last night as well.

Title: Re: WTF?????
Post by: Shawn (EIP) on March 21, 2012, 09:57:50 PM

Quote from: Prosperi-Tees on March 21, 2012, 09:25:45 PM

Yep somethings in the air or water, that happened to me last night as well.

Same here but found the issue in my films , my epson 1800 is slightly shrinking the image between prints by a hair. Talk about annoying...

Title: Re: WTF?????
Post by: Frog on March 21, 2012, 10:40:17 PM

But I thought that with your issue Shawn, we determined that it was different film types that fed slightly differently. Or was that someone else.

Another potential issue I warned of was changing film orientation.  Never mix!

Title: Re: WTF?????
Post by: Doug S on March 21, 2012, 10:59:43 PM

Yep, if you send one film out portrait and the other out landscape.  The marks will not line up.  I found that out the hard way.

Title: Re: WTF?????
Post by: Dottonedan on March 21, 2012, 11:19:17 PM

Thermal printers are bad for distorting the registrations vertically. Most designs are taller so when you have a very tall design and multiple colors, you will see more distortion. Especially between the 1st and the last. Since they are thermal. You get a lot more elongation or stretch. The film relaxes more as it heats up.

Same applys for other printers but not as much as thermals due to the excessive heat needed.

Title: Re: WTF?????
Post by: Shawn (EIP) on March 22, 2012, 12:32:17 AM

I feed my films the same way and I've been using the same film for 2 years without issues.

Title: Re: WTF?????
Post by: Ripcord on March 29, 2012, 01:23:52 PM

Frog, I learned that a few years ago. Separated my colors in a portrait format and decided to rotate the images 90 degrees and print as a landscape. Man, that registration was ridiculously off!

Title: Re: WTF?????
Post by: Frog on March 29, 2012, 08:11:48 PM

I experienced it with one replacement plate that was just a little off.
That's even more frustrating.On that lesson, I gave myself a green star for being a quick learner.
That's not always the case for us old dogs.