deskthority

I can't remove the keycaps . And i can't find any informations in the internet

What do the switches feel like? Can you take apart the rest of the typewriter and see from the side?

With most types of switches, a pair of butter knives is a good tool for removing stuck-on keycaps. Some types of switches/keycaps, especially certain rubber domes, could break if you force them, however.

Linear... I will open the case today.

Is it a word processor? I have something that is very similar if so. The caps are pretty hard to pull off and they're quite fragile. Feels linear but mine has an extremely scratchy and stiff key-feel.

It's not mechanical, but semi-mechanical. The keycap is held into a barrel, which presses down onto a metal leaf spring, which bends and actuates a conductive (linear) rubber dome over a membrane. Very odd implementation, but I believe that it was also used on some terminal keyboards.

keycap wrote: Is it a word processor? I have something that is very similar if so. The caps are pretty hard to pull off and they're quite fragile.

Yes it's something like a word processor.

Feels linear but mine has an extremely scratchy and stiff key-feel.

mine too