An ejection nozzle cleaning device includes: a gripping portion held by a user; a horn protruding from one end of the gripping portion and extending away therefrom; a reservoir disposed on one side of the horn in an extending direction in which the horn is extending; and an ultrasonic generator disposed on another side of the horn in the extending direction. The reservoir is a tubular member with a closed bottom and an opening in a part thereof that faces the ink ejection face. The reservoir has a storage space where a cleaning liquid is containable. The reservoir has a through cavity allowing the horn to be at least partly inserted and located in the storage space. A peripheral wall surrounding the opening of the reservoir is formed to a height, which allows one side of a vibration transmitter of the horn to be located in the storage space.

A controller of a liquid ejection device obtains a temperature of a head after recording and before a pre-cap flushing and determines a pre-cap flushing voltage based on the temperature. Then, the controller outputs the pre-cap flushing voltage to the head in the pre-cap flushing process.

A liquid ejection device, a cleaning apparatus and a cleaning method for a module substrate, which can remove foreign matters on an ejection opening face and in a flow path connected with an ejection opening is provided. For that purpose, an ejection opening face is covered with liquid, cleaning is performed by driving a device configured to vibrate liquid, and after that the liquid is collected.

A maintenance cap is provided for in-situ attachment to a printhead of printing apparatus. The maintenance cap comprises a housing defining at least one chamber for receiving a liquid. An opening in the housing provides a path for the liquid to pass from the chamber into a portion of the printhead when the maintenance cap is engaged with the printhead. The maintenance cap also includes a seal disposed around the opening for engagement with the printhead. A transducer coupled to the housing is used to generate ultrasound acoustic waves in the liquid contained in the chamber and printhead so as to clean the printhead.

A method for cleaning nozzle surfaces of an inkjet print head assembly includes using a cleaning slide to carry out a movement along the assembly and clean the nozzle surfaces with a cleaning liquid in ultrasonic vibration. The cleaning slide includes an ultrasonic cleaning device, a suction device, and a rinsing device and the movement of the cleaning slide includes a forward movement and a backward movement. During the forward movement, the ultrasonic cleaning device and the suction device following the ultrasonic cleaning device are activated while the rinsing device following the two is deactivated. During the backward movement, the rinsing device and the suction device following the rinsing device are activated while the ultrasonic cleaning device following the two is deactivated. Cleaning liquid and contamination are advantageously prevented from reaching the interior of print heads or into an ink supply system thereof, preferably in industrial inkjet printing.

A print head assembly for printing an ink on a substrate having a printing pin member having a tip; a wetting system having an ink reservoir, the wetting system being configured to transfer ink from the ink reservoir to the tip of the printing pin member; and a charging system operably coupled to the printing pin member, the charging system configured to apply a high voltage charge to the printing pin member resulting in the ink on the tip of the printing pin member to be deposited upon the substrate.

A print head assembly for printing an ink on a substrate having a printing pin member having a tip; a wetting system having an ink reservoir, the wetting system being configured to transfer ink from the ink reservoir to the tip of the printing pin member; and a charging system operably coupled to the printing pin member, the charging system configured to apply a high voltage charge to the printing pin member resulting in the ink on the tip of the printing pin member to be deposited upon the substrate.

A wiping device includes a cleaning liquid tank, an endless web, and an ultrasonic generator. The cleaning liquid tank stores a cleaning liquid. The endless web is rotatably movable and has a part immersed in the cleaning liquid in the cleaning liquid tank and another part outside the cleaning liquid to wipe an object in a wiping direction. The ultrasonic generator applies ultrasonic waves to the cleaning liquid in the cleaning liquid tank.

There is provided a method for cleaning a liquid ejecting head including a nozzle plate in which a nozzle configured to eject a liquid is formed, a pressure chamber communicating with the nozzle, a vibration plate that defines a part of the pressure chamber, and a piezoelectric element that is laminated on the vibration plate, the method including: an ultrasonic cleaning step of ultrasonically vibrating a cleaning liquid in a cleaning tank by an ultrasonic vibrator in a state where the nozzle is immersed in the cleaning liquid in the cleaning tank and in a state where a gas is present in the pressure chamber.

A maintenance cap is provided for in-situ attachment to a printhead of printing apparatus. The maintenance cap comprises a housing defining at least one chamber for receiving a liquid. An opening in the housing provides a path for the liquid to pass from the chamber into a portion of the printhead when the maintenance cap is engaged with the printhead. The maintenance cap also includes a seal disposed around the opening for engagement with the printhead. A transducer coupled to the housing is used to generate ultrasound acoustic waves in the liquid contained in the chamber and printhead so as to clean the printhead.