Abstract

A liquid dispensing element is provided. The element comprising; a dispensing plate comprising a plurality of orifices; the dispensing plate at least partially defining a fluid flow path; a plurality of piezoelectric transducers each comprising a piston configured to move perpendicular to the dispensing plate between a first position wherein the piston is close to the dispensing plate and a second position wherein the piston is further from the dispensing plate. The movement between the first and second positions results in the ejection of a droplet of fluid via a surface cavitation droplet ejection process such that the diameter of the droplet is less than a diameter of the orifice.

IPC Classes  ?

• B41J 2/14 - Structure thereof
• B41J 2/21 - Ink jet for multi-colour printing

Abstract

b), wherein the flow channel is resonated, in use, by a vibration distributor (104) comprising a mass resonator (103), piezoelectric exciter (108) and wave concentrator (110) arranged in an axial configuration.

IPC Classes  ?

• B41J 2/025 - Ink jet characterised by the jet generation process generating a continuous ink jet by vibration
• B41J 2/04 - Ink jet characterised by the jet generation process generating single droplets or particles on demand
• B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
• B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles

Abstract

Systems for applying a masking material to a substrate, the system comprising: a source feed for delivering a quantity of masking material to a substrate, a waste deposit for receiving masking material when removed from the substrate, a spray nozzle moveable relative to the substrate and a controller for controlling movement of the nozzle relative to the substrate and the speed of delivery of the masking material from the source feed, wherein the speed of movement of the spray nozzle relative to the substrate is substantially equal to the speed of delivery of the masking material from the source feed.

IPC Classes  ?

• B05B 12/22 - Masking elements, i.e. elements defining uncoated areas on an object to be coated movable relative to the spray area
• B05B 12/24 - Masking elements, i.e. elements defining uncoated areas on an object to be coated made at least partly of flexible material, e.g. sheets of paper or fabric
• B05B 13/04 - Means for supporting workArrangement or mounting of spray headsAdaptation or arrangement of means for feeding work the spray heads being moved during operation
• B05C 21/00 - Accessories or implements for use in connection with applying liquids or other fluent materials to surfaces, not provided for in groups

Abstract

A liquid dispensing element is provided. The element comprising; a dispensing plate comprising a plurality of orifices; the dispensing plate at least partially defining a fluid flow path; a plurality of piezoelectric transducers each comprising a piston configured to move perpendicular to the dispensing plate between a first position wherein the piston is close to the dispensing plate and a second position wherein the piston is further from the dispensing plate. The movement between the first and second positions results in the ejection of a droplet of fluid via a surface cavitation droplet ejection process such that the diameter of the droplet is less than a diameter of the orifice.

IPC Classes  ?

• B41J 2/14 - Structure thereof

Abstract

An industrial printhead comprising an array of piezoactuated flow channel dispensers enclosed in a chamber with a multi-orifice plate allowing fluid exit.

IPC Classes  ?

• B41J 2/14 - Structure thereof
• B41J 2/04 - Ink jet characterised by the jet generation process generating single droplets or particles on demand

Abstract

The present invention provides a system (100) for applying a masking material (110) to a substrate (104), the system comprising: a source feed (108) for delivering a quantity of masking material to a substrate, a waste deposit (112) for receiving masking material when removed from the substrate, a spray nozzle (106) moveable relative to the substrate and a controller (116) for controlling movement of the nozzle (106) relative to the substrate (104) and the speed of delivery of the masking material (110) from the source feed (108), wherein the speed of movement of the spray nozzle (106) relative to the substrate (104) is substantially equal to the speed of delivery of the masking material (110) from the source feed (108).

IPC Classes  ?

• B05B 12/22 - Masking elements, i.e. elements defining uncoated areas on an object to be coated movable relative to the spray area
• B05B 13/04 - Means for supporting workArrangement or mounting of spray headsAdaptation or arrangement of means for feeding work the spray heads being moved during operation

Abstract

An industrial printhead (100) comprising a flow channel enclosed in a chamber, wherein the flow channel (102) has at least one fluid inlet (102a) and at least one fluid outlet (102b), wherein the flow channel is resonated, in use, by a vibration distributor (104) comprising a mass resonator (103), piezoelectric exciter (108) and wave concentrator (110) arranged in an axial configuration.

IPC Classes  ?

• B05B 17/06 - Apparatus for spraying or atomising liquids or other fluent materials, not covered by any other group of this subclass operating with special methods using ultrasonic vibrations
• B41J 2/04 - Ink jet characterised by the jet generation process generating single droplets or particles on demand

Abstract

An industrial printhead comprising an array of piezoactuated flow channel dispensers enclosed in a chamber with a multi-orifice plate allowing fluid exit.

IPC Classes  ?

• B41J 2/04 - Ink jet characterised by the jet generation process generating single droplets or particles on demand
• B41J 2/14 - Structure thereof