Marking method and marked receptacle

An apparatus for the marking of successive receptacles in a marking station, the apparatus comprising:

• a conveyor for moving successive receptacles in the marking station along a conveying path;
• a first laser device and a second laser device each comprising a respective laser source, which are located on both sides of the conveying path and configured to emit two laser beams in opposite directions, transversally to a running direction of the conveyor, in such a way that:
• the laser beam of the first laser device is focused in a first focal plane corresponding to a first surface region of a receptacle passing in the marking station, and
• the laser beam of the second laser device is focused in a second focal plane corresponding to a second surface region of a receptacle passing in the marking station,
• wherein for each receptacle, the first and second surface regions are arranged substantially at 180° from each other with respect to a main axis of the receptacle;
• and
• a controller configured to control the first and second laser devices as a function of a speed of the conveyor and a triggering time.