Screen cleaning apparatus and screen cleaning method

Abstract

An apparatus for cleaning a screen of a screen printing machine, including an ultrasonic vibrator which vibrates at an ultrasonic frequency, a cleaning-sheet supporting device which supports a portion or an entirety of a porous cleaning sheet between the screen and the vibrator, such that the portion or entirety of the cleaning sheet is contactable with the screen and the vibrator, and a washing-agent supplying device which supplies a washing agent to the cleaning sheet. An apparatus for cleaning a contact surface of a screen of a screen printing machine, the contact surface contacting a substrate when the screen is used to effect a screen printing on the substrate, the apparatus including a feeding device which supports a wiping sheet in a form of a web having a constant width, such that a portion of the web is contactable with the contact surface of the screen, and which feeds the web in a longitudinal direction thereof, a pressing device which presses the portion of the web against a portion of the contact surface of the screen, and a moving device which moves one or both of the screen and a unit including the pressing device, relative to each other, in a direction parallel to the contact surface of the screen.

Dependencies are inferred from the claim text.