I would like to use the Print key for my own purpose. By default, it is bound to various screenshot functions.

I tried the following, which did not work: [System settings] [keyboard] [shortcuts] [screenshots]. There I disabled all Print variations with Backspace. Closing the app and reentering shows me that all these functions are disabled. What strikes me as odd is that the regular Print function is listed twice:

However, the key Print (also according to xev it's that key) still produces a screenshot.

Edit: And here is what xev says:

~/Pictures$ xev|grep keycode

    state 0x0, keycode 36 (keysym 0xff0d, Return), same_screen YES,

    state 0x0, keycode 107 (keysym 0xff61, Print), same_screen YES,