Patent ID: 9421643
Filing Date: 2016-08-23
CPC Classification: B23K

Claim Text:
1. A laser processing apparatus comprising: a chuck table for holding a workpiece; laser beam applying means having focusing means for applying a laser beam to the workpiece held on the chuck table to thereby process the workpiece; and dust discharging means for discharging dust generated by the application of the laser beam from the focusing means to the workpiece; said dust discharging means including a dust collector provided below the focusing means and suction means connected to the dust collector; the dust collector having a U-shaped configuration composed of a rectangular top wall having an opening for allowing the pass of the laser beam applied from the focusing means, a first side wall projecting downward from one side edge of the top wall, and a second side wall projecting downward from the other side edge of the top wall so as to be opposed to the first side wall, whereby a first rectangular opening is formed by one end of the top wall, one end of the first side wall, and one end of the second side wall, and a second rectangular opening is formed by the other end of the top wall, the other end of the first side wall, and the other end of the second side wall; the suction means including a suction duct having one end connected to the first rectangular opening of the dust collector and the other end connected to a vacuum source.