Illustrator and Background Transparency

Question

Hello everyone, I have a big issue regarding Illustrator, let me explain:

I have T-Shirts to print with a white logo, the printer wants the file of this logo in .AI

Originally, I had a white logo on a black background that was not vectorized.
I automatically vectorized it in Illustrator using the automatic function, and the result was perfect, I then saved it in .ai and opened it in Photoshop.

In Photoshop, I removed the black background that I didn't want, and I made some modifications to the logo.
The black background no longer exists, it is transparent and there is only the white logo left.

I save it in .tif format so I can open it in Illustrator while keeping the transparency of the background, but now I have to vectorize it again before I can save it in .ai.

The problem is this: When I do the automatic vectorization, the transparent background disappears and turns white, so the image becomes one since the logo is also white.

My question is: How can I vectorize only this logo, without adding the white background underneath, which then gives me a completely white image?

Thank you very much in advance.

Nehel · Accepted Answer

- open the document to the size you want
- type your two letters, separately, in black for temporary visualization, resize them as needed
- arrange them
- vectorize them
- break them down
- select the V and cut it so that it does not overflow from the P
- select your two objects and merge them with the pathfinder
- fill them with white
and you will get this:

save in Ai, your logo is indeed on alpha

check in Photoshop

Nehel · Answer

Hello   On Photoshop, I removed the black background that I didn't want, and I made a few changes to the logo.   Why Photoshop? You could have vectorized and decomposed then removed or masked the black background, easily modify your objects since they are decomposed and then re-save the modification in Ai.

sarahmoon · Answer

Hello,   When you automatically vectorize in Illustrator, you just need to ungroup the appearance and remove the background. Why did you go back through Photoshop?

Raptor2x · Answer

Thank you for your responses.

I had to go through Photoshop to make changes to the original logo, but in the end, it was pointless to vectorize and then modify it because it removes the changes when modifying via Photoshop. So I might as well directly modify the original logo in Photoshop and then vectorize the final version, but the problem remains the same.

I made a short video to show you what I'm doing:
https://www.youtube.com/watch?v=zwMjVX6xX3E&feature=youtu.be

Basically, I want the same logo as the original but vectorized, without the white background.
At one point, I managed to get this:

http://puu.sh/cNNuy/ea1ffe40b4.png

But why isn't there any white?

I've never had to do this in Illustrator before, actually.

Nehel · Answer

Is this the logo?

sarahmoon · Answer

I don't understand Raptor, you're overthinking it for no reason.

You absolutely don't need to go through Photoshop to create this kind of logo.
Especially since it's just the combination of two letters (Garamond type).

Create your Illustrator document.
Type your letters, vectorize them.
Bring them closer together.
Pathfinder--->Merge.
Then, Objects--->Expand Appearance.
And then, with the white arrow, adjust the curves you want.
Save as .ai, the transparency is greyed out since it's preserved.

Creation in Illustrator:

Import into InDesign. I put a background color to show you that only the white of the letters is taken into account.

Furthermore, in your example, the vectorization is not very well done.
So it's better to do everything in Illustrator: quick and easy.

Gambit · Answer

Anyway, you should know that dynamic vectorization in Illustrator needs contrast to work properly...

A white logo on a white or transparent background, well, that makes white on white and Illustrator can't make sense of it.

In your case, everyone is right, it’s better to create your logo directly in Illustrator and not go through Photoshop, especially if it's lettering.

But for your video, in Photoshop you create a black background layer with your white letters on top and export it as TIFF.
Open it in Illustrator, incorporate your image, vectorize everything, break it down, and remove all the black parts. You'll see that the high contrast between black and white will work much better than white on white.

Illustrator and Background Transparency

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