The present invention discloses a disassembly mechanism including a plate, at least one guiding component, at least one constraining component and a pushing component. The sidewalls of the firing chamber are shaped relative to the firing chamber entry in a manner such that a strong jet of inflow ink is provided for moving the collapsing vapor bubble from the center of the chamber and against a curved back wall of the firing chamber. The most probable values of the parameters are found by maximizing the match function through Fourier transforming a vector consisting of terms of the match function. The connecting elements are hooks that are connected fixedly to the decorative or functional element and are hooked in the helmet shell.