We use a process that combines precise lasers and pigmented marking material to permanently fuse black images on our solid metals, such as brass and stainless steel.
The marking material, consists of traditional ceramic glazing material, with the addition of a thermal absorber.
The ceramic glazing material is a mixture of glass frit – small particles of partially fused glass designed to melt at a much lower temperature than ordinary window glass – with pigments for coloring. The traditional use of such glazing material requires it to be applied to the surface of a ceramic object, and then baked in a very hot kiln for more than an hour. Once fired, the glass frit and pigments combine to form a thin layer of black colored glass that is further fused onto the surface of the ceramic object.
The patented method uses a laser as the heat source to fuse the ceramic glaze instead of a kiln. All this happens in microseconds as opposed to hours, consuming far less “energy” and, consequently, without compromising or damaging the material being marked. It is the thermal absorber within the marking materials that enhances and speeds the heat absorption from the laser beam, improving the transfer to the glaze for a permanent mark that is both fade and scratch resistant.