Patent ID: 8172406

Claim:
A powder dust capture device comprising: a main body housing having an air intake and an exhaust; a powder dust capture unit provided in the air intake; and a blowing unit for drawing air in from the air intake via the powder dust capture unit, passing the air through a predetermined area in the main body housing, and expelling the air out from the exhaust, the powder dust capture unit comprising a filter unit, a filter feeding mechanism and a filter feed control unit, and the filter unit comprising an electrostatic filter wound around a rolling shaft, a filter take-up shaft that reels in the electrostatic filter, a coupling unit for engaging the filter take-up shaft to the filter feeding mechanism, and a small housing that stores the electrostatic filter wound around the rolling shaft and the filter take-up shaft, wherein the small housing has an aperture part between the rolling shaft and the filter take-up shaft for drawing in air that has passed through the electrostatic filter from the air intake, the filter feeding mechanism can perform driving to rotate the filter take-up shaft via coupling with the filter take-up shaft by engagement with the coupling unit, the filter feed control unit has a filter feed amount detection unit and controls a filter feeding operation performed by the filter feeding mechanism, based on detection output from the filter feed amount detection unit, and the filter unit is attachable/removable with respect to the main body housing.