But what does "ghosting" mean anyway?

When a very faint copy of some undesired image shows up on the wrong page, or in the wrong place. It can happen for many different reasons besides too much ink. Since your problem deals specifically with ink penetrating the paper, "bleeding through" is the best, most precise way of describing the problem.

And if the image dosen't bleed through, for example I use a pencil a little too hard. I can see those words (not clearly) because the page has raised due to a lot of pressure. What will be used in this context?

It left an impression on the next page. Or you could say a legible impression. (It's not exactly ghosting - ghosting would imply a slight amount of ink is forming the image)

So does "impression" sound natural?

In the context of "ink bleeding" can "impression" be used as well?

I would find 'impression' misleading if there is ink involved.

Maybe professional printers would use the word 'impression' to mean ink has been transferred. But most people would get confused. I expanded the original answer - that might help...

So it should be "ink bleeding" if ink's involved and "impression" will be used otherwise for "raised words on the other side of the page", right?

you would use "impression" only if you have made a dent in another, separate page

if you are talking about using a pen with so much force that it makes tiny mountain ranges on the opposite side of the paper, there is no single word for that...

Doesn't "dent" mean that it has been raised in a particular region?

It=page

dent means a valley, where the material has been lowered

if you're talking about affecting a separate piece of paper, making little valleys in it (with no ink), then you have made an impression onto that separate piece of paper

What do you mean by "valley"?

Yes it was without any ink

You can not read it but the words got raised on the other side of the page, like a Braille Script

*in a Braille Script

valley is where the ground goes down encrypted-tbn0.gstatic.com/…

if you just damaged the opposite side of the page, there is no single word for that. You have to get creative.

I know that, but how can it be used for a page?

It's the opposite of impression.

something like raised ridges

@dwilbank How's it the opposite?

you made the impression when you pressed down hard with the pen - on the opposite side of the page, the paper is raised up in ridges...

so impression is down, raised ridges is up

so you created an embossed image on the opposite side of the page - that's what I'd say

synonyms.com/synonym/embossment

So can it be : I applied too much pressure and raised the ridges up.

formaxprinting.com/blog/2010/03/…

raised ridges on the opposite side, yes...

away from keyboard for a while...