Patent ID: 11937763
Assignee: DISCO CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC A  H  B | IPC A  H

Claim 0:
1. A cleaning method for cleaning a cleaning target face that is one of a holding face for holding a workpiece and/or a surface of the workpiece held on the holding face, by using a cleaning nozzle,
the cleaning nozzle including:
an air nozzle having a jet port for jetting air toward the cleaning target face and extending in a direction parallel to the cleaning target face, an air space above the jet port, and an electrode needle that extends from the air space toward the jet port, and
a suction nozzle having a suction port for sucking air existing on the cleaning target face and arranged adjacent to and in parallel to the air nozzle,

the cleaning method comprising:
a placement step of placing the cleaning nozzle above the cleaning target face in parallel to the cleaning target face with a gap left therebetween;
a cleaning step of jetting, while relatively moving the cleaning target face in a direction parallel to the cleaning target face and besides crossing with an extension direction of the cleaning nozzle placed by the placement step, air from the jet port and sucking the air reflected by the cleaning target face through the suction port to clean the cleaning target face, wherein the cleaning nozzle remains stationary during the cleaning step; and
applying a voltage to the electrode needle, such that the air nozzle jets ionized air from the jet port.