According to the present invention, the keypad of laser marking equipment includes: that laser labelling unit (110) irradiation keyboard vibration measurement comes Reference character or number; The residue generated is removed with the part of a CO_2 cleaning machines injection solid-state CO_2 particle marker, is marked when executing tenant. The CO_2 cleaning machines include: a kind of CO_2 storage units (122) storage CO_2 gases; The cooling CO_2 of cooling unit (124) is solid-state; A kind of N_2 storage units (123) storage N_2 gases, are a kind of carriers; Nozzle unit (121) has cooling CO_2 particles N_2 gases to be injected. According to the present invention, it is placed on bracket due to holding several mobile phones under laser marking cleaning state, workload and scavenging period are reduced, and are suitable for laser marking device on volume production line. ;The 2016 of copyright KIPO submissions
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