Patent ID: 8449691

Claim:
A liquid solvent abutment unit, comprising: an enclosure member having a flat plate and an enclosure wall extending downward and connected to a circumferential part of the flat plate, the enclosure wall having a groove formed on a lower end surface of the enclosure wall, and an O-ring being fitted in the groove, the enclosure wall, the flat plate, and the O-ring defining a retention-use space, when the O-ring is pressed onto a support plate; a supply part configured to supply a surface of the support plate with a liquid solvent, such that the supplied liquid solvent is retained in the retention-use space, the supply part being disposed inside the enclosure wall and being a first through hole formed in a thickness direction of the flat plate; a retention part configured to retain the supplied liquid solvent supplied to the support plate surface, the retention part being disposed inside the enclosure wall and being a second through hole formed in the thickness direction of the flat plate; a temperature adjustment unit configured to measure and adjust a temperature of the supplied liquid solvent supplied to the support plate surface; a vibration unit configured to vibrate the supplied liquid solvent retained in the retention-use space; and a control unit configured to control the vibration of the vibration unit in accordance with the temperature of the supplied liquid solvent, wherein the control unit ceases vibration of the vibration unit when the temperature of the supplied liquid solvent measured by the temperature adjustment unit exceeds a predetermined temperature, and the control unit initiates vibration of the vibration unit when the temperature of the supplied liquid solvent measured by the temperature adjustment unit is at or below the predetermined temperature.