White pixels for DTF

[Alqadhi]

Hi everyone, how are you?

I was wondering if someone know a trick for white color underbase, the question is if I have a colorful print (like IMG down) and the print has some white letters and objects, so after decreasing white pixels in photoshop (to make it underbase to the colors) the little white things becomes so thick because of that (I used to decrease to 2px for white channels), is there any trick to decrease just the color objects? Without touching the white letters? I'm asking about design in one file. Thank you!

https://ibb.co/27gBkjd

[redna379]

Which RIP?
I assume you're decreasing the 2px in it while printing. But there are options to control how it is applied, at some extent. In Acro there's a checkbox where in white setting's decease named "except white only".

But even assuming the RIP cannot help, if your picture is like the example you linked and is meant to be printed by you, you could just print that as 2 separate things. In that case, the colored part with 2px decrease and the white part with none.A piece of heat resistant tape on the back of the two prints and you will end up with a single "virtual sheet" as asked.

 

[ow1et]

On 1/6/2022 at 12:43 AM, Alqadhi said:

Hi everyone, how are you?

I was wondering if someone know a trick for white color underbase, the question is if I have a colorful print (like IMG down) and the print has some white letters and objects, so after decreasing white pixels in photoshop (to make it underbase to the colors) the little white things becomes so thick because of that (I used to decrease to 2px for white channels), is there any trick to decrease just the color objects? Without touching the white letters? I'm asking about design in one file. Thank you!

https://ibb.co/27gBkjd

You can create custom spot channel in photoshop. Some of the pro rips supports it. Check yourth.

Detail steps:

1. Make selection around colored part of image. Then decrease selection in 2px. Create spot channel with that. (It's custom choke, not rip-based).

2. Make selection with ONLY white parts of image. Select spot channel and then fill it with black.

3. Export file must support spot channels - TIFF, PDF, PSD

https://youtu.be/tw6upSVbi7c