Abstract: A liquid dispenser includes a first liquid supply that provides a carrier liquid under pressure that flows from the first liquid supply through a first liquid supply channel through a liquid dispensing channel through a liquid return channel and back to the first liquid supply continuously during a drop dispensing operation. A second liquid supply provides a functional liquid to the liquid dispensing channel through a second liquid supply channel. A drop formation device, associated with an interface of the second liquid supply channel and the liquid dispensing channel, is selectively actuated to form a discrete drop of the functional liquid in the carrier liquid flowing through the liquid dispensing channel. The functional liquid is immiscible in the carrier liquid. A drop ejection device is selectively actuated to divert the discrete drop of the functional liquid and a portion of the carrier liquid flowing through the liquid dispensing channel toward the outlet opening of the liquid dispensing channel.

Abstract: A method of dispensing liquid includes providing a carrier liquid under pressure using a first liquid supply that flows from the first liquid supply through a first liquid supply channel through a liquid dispensing channel through a liquid return channel and back to the first liquid supply continuously during a drop dispensing operation. A functional liquid is provided to the liquid dispensing channel through a second liquid supply channel using a second liquid supply. A drop formation device is selectively actuated to form a discrete drop of the functional liquid in the carrier liquid flowing through the liquid dispensing channel. The functional liquid is immiscible in the carrier liquid. The drop ejection device is selectively actuated to divert the discrete drop of the functional liquid and a portion of the carrier liquid flowing through the liquid dispensing channel toward an outlet opening of the liquid dispensing channel.

Abstract: A method of continuously ejecting liquid includes providing a liquid ejection system that includes a substrate and an orifice plate affixed to the substrate. Portions of the substrate define a liquid chamber. The orifice plate includes a MEMS transducing member that extends over at least a portion of the liquid chamber. A compliant membrane is positioned in contact with the MEMS transducing member. The compliant membrane includes an orifice. Liquid is provided under a pressure sufficient to eject a continuous jet of the liquid through the orifice located in the compliant membrane of the orifice plate by a liquid supply. A drop of liquid is caused to break off from the liquid jet by selectively actuating the MEMS transducing member which causes a portion of the compliant membrane to be displaced relative to the liquid chamber.

Abstract: A printhead and a method of ejecting liquid droplets are provided. The method includes providing a printhead operable to eject liquid drops having a plurality of drop volumes Vi, for i equal to 1 through n, where n?2, with Vj>Vi when j>i. One of the plurality of drop volumes is a minimum drop volume Vmin, and a difference in drop volumes between successively larger drops equals (Vk+1?Vk) which is less than Vmin, for k equal to 1 through n?1. The method also includes ejecting liquid drops through the printhead.

Abstract: A printhead and a method of ejecting liquid droplets are provided. The method includes providing a printhead operable to eject liquid drops having a plurality of drop volumes Vi, for i equal to 1 through n, where n>2, with Vj>Vi when j>i. One of the plurality of drop volumes is a minimum drop volume Vmin, and a difference in drop volumes between successively larger drops equals (Vk+1?Vk) which is less than Vmin, for k equal to 1 through n?1. The method also includes ejecting liquid drops through the printhead.

Abstract: A liquid ejector includes a structure defining a plurality of chambers with one of the chambers including a first and second surface. The first surface includes a nozzle orifice. A drop forming mechanism is located on the second surface of the chamber opposite the nozzle orifice. First and second liquid feed channels are in fluid communication with the chamber. First and second segments of a segmented liquid inlet are in fluid communication with the first and second liquid feed channels, respectively. The first and second segments of the segmented liquid inlet are also in fluid communication with another one of the plurality of chambers. Liquid is provided to the chamber through the first and second liquid feed channels from the segmented liquid inlet. A drop of the liquid is ejected through the nozzle orifice of the chamber by operating the drop forming mechanism.

Abstract: According to one feature of the present invention, a method of manufacturing a porous catcher includes providing a catcher face material layer; forming pores in the catcher face material layer using a first etching process that is controlled by a first photolithographic mask; providing a reinforcing structure material layer that is in mechanical contact with the porous catcher face; forming openings in the reinforcing structure material layer using a second etching process that is controlled by a second photolithographic mask; and fluidically connecting the openings in the reinforcing structure and the pores of the catcher face using a material removal process.

Abstract: A liquid dispenser includes a liquid supply channel, a liquid dispensing channel that includes an outlet opening, and a liquid return channel that includes a porous member located therein. A liquid supply provides liquid under pressure from the liquid supply channel through the liquid dispensing channel to the liquid return channel. A diverter member is selectively actuatable to divert a portion of the liquid toward outlet opening of the liquid dispensing channel.

Abstract: A liquid dispenser includes a liquid supply channel, a liquid return channel; and a liquid dispensing channel. The liquid dispensing channel includes a wall. The wall includes a surface. A portion of the wall defines an outlet opening. The outlet opening includes a downstream edge relative to a direction of liquid flow through the liquid dispensing channel. The downstream edge is sloped relative to the surface of the wall of the liquid dispensing channel. A liquid supply provides liquid that flows from the liquid supply channel through the liquid dispensing channel to the liquid return channel. A diverter member selectively diverts a portion of the flowing liquid through the outlet opening of the liquid dispensing channel.

Abstract: A printhead and a method of ejecting liquid droplets are provided. The method includes providing a printhead operable to eject liquid drops having a plurality of drop volumes Vi, for i equal to 1 through n, where n?2, with Vj>Vi when j>i. One of the plurality of drop volumes is a minimum drop volume Vmin, and a difference in drop volumes between successively larger drops equals (Vk+1?Vk) which is less than Vmin, for k equal to 1 through n?1. The method also includes ejecting liquid drops through the printhead.

Abstract: A method of printing provides liquid drops travelling along a first path using a jetting module. A catcher including a stationary porous surface is also provided. A liquid film is caused to flow over the stationary porous surface of the catcher using a liquid source. Selected liquid drops are caused to deviate from the first path and begin travelling along a second path using a deflection mechanism. The liquid drops travelling along one of the first path and the second path contact the liquid film.

Abstract: A continuous liquid ejection system includes a substrate defining a liquid chamber. An orifice plate, affixed to the substrate, includes a MEMS transducing member. The MEMS transducing member includes a first portion anchored to the substrate and a second portion extending over and free to move relative to the liquid chamber. A compliant membrane, positioned in contact with the MEMS transducing member, includes an orifice and a first portion covering the MEMS transducing member and a second portion anchored to the substrate. A liquid supply provides a liquid to the liquid chamber under a pressure sufficient to eject a continuous jet of the liquid through the orifice located in the compliant membrane. The MEMS transducing member is selectively actuated to cause a portion of the compliant membrane to be displaced relative to the liquid chamber to cause a drop of liquid to break off from the liquid jet.

Abstract: A printhead includes a jetting module that forms liquid drops travelling along a first path. A deflection mechanism causes selected liquid drops formed by the jetting module to deviate from the first path and begin travelling along a second path. A moving liquid curtain is positioned relative to the first path such that the liquid drops travelling along one of the first path and the second path contact the liquid curtain in a drop interception region of the liquid curtain. A liquid collection device is positioned to collect the liquid curtain downstream from the drop interception region.

Abstract: A liquid dispenser includes an array of liquid dispensing elements positioned on a substrate. Each liquid dispensing element includes a liquid dispensing channel including an outlet opening. Liquid supply and return channels are positioned on the substrate in fluid communication with the liquid dispensing channel. Liquid supply and return passages extend through the substrate in fluid communication with the liquid supply and return channels, respectively. A liquid manifold includes liquid supply and return ducts in fluid communication with each liquid supply and return passage of each liquid dispensing element, respectively. A liquid supply provides liquid that flows from the liquid supply duct of the liquid manifold through each liquid dispensing element to the liquid return duct of the liquid manifold. A selectively activated diverter member, associated with the liquid dispensing channel, diverts a portion of the liquid flowing through the dispensing channel through the outlet opening.

Abstract: A liquid dispenser includes a liquid supply channel, a liquid dispensing channel, and a liquid return channel. The liquid dispensing channel includes a wall. The wall includes a surface. A portion of the wall defines an outlet opening that includes an upstream edge relative to a direction of liquid flow through the liquid dispensing channel. The upstream edge includes a radius of curvature when viewed from a direction perpendicular to the surface of the wall. A liquid is provided that flows from the liquid supply channel through the liquid dispensing channel to the liquid return channel. A liquid drop is caused to be ejected from the outlet opening of the liquid dispensing channel by selectively actuating a diverter member to divert a portion of the flowing liquid through the outlet opening of the liquid dispensing channel.

Abstract: A liquid dispenser is provided that includes a liquid supply channel, a liquid dispensing channel, and a liquid return channel. The liquid dispensing channel includes a wall. The wall includes a surface. A portion of the wall defines an outlet opening that includes a downstream edge relative to a direction of liquid flow through the liquid dispensing channel. The downstream edge is sloped relative to the surface of the wall of the liquid dispensing channel. A liquid is provided that flows from the liquid supply channel through the liquid dispensing channel to the liquid return channel. A liquid drop is caused to be ejected from the outlet opening of the liquid dispensing channel by selectively actuating a diverter member to divert a portion of the flowing liquid through the outlet opening of the liquid dispensing channel.

Abstract: Each liquid dispensing element of an array includes liquid supply, dispensing, and return channels positioned on a substrate. The liquid dispensing channel, in communication with the supply and return channels, includes an outlet opening and is associated with a diverter member. Liquid supply and return passages, in communication with liquid supply and return channels, respectively, extend through the substrate. Liquid supply and return ducts of a liquid manifold are in communication with each liquid supply passage and liquid return passage, respectively. Liquid flows from the liquid supply duct through each liquid dispensing element to the liquid return duct. A liquid drop is ejected from the outlet opening of the liquid dispensing channel of one of the liquid dispensing elements by selectively actuating the associated diverter member to divert a portion of the flowing liquid through the outlet opening of the liquid dispensing channel.

Abstract: A liquid dispenser includes liquid supply, dispensing, and return channels. A portion of a first wall of the liquid dispensing channel defines an outlet opening. A second wall of the liquid dispensing channel, opposite the first wall, extends along portions of the liquid supply and return channels. A liquid supply passage, in communication with the supply channel, extends through the second wall. A liquid return passage, in communication with the return channel, is positioned through the second wall and overlaps the outlet opening of the liquid dispensing channel as viewed from a direction perpendicular to a surface of the first wall of the liquid dispensing channel. A liquid supply provides liquid that flows from the supply passage through the supply, dispensing, and return channels to the return passage. A diverter member selectively diverts a portion of the flowing liquid through the outlet opening of the liquid dispensing channel.

Abstract: A liquid dispenser includes an array of liquid dispensing elements positioned on a substrate. Each liquid dispensing element includes a liquid dispensing channel positioned on the substrate. The liquid dispensing channel includes an outlet opening positioned on a wall opposite the substrate. A diverter member is associated with the liquid dispensing channel. A liquid return channel is positioned on the substrate in fluid communication with the liquid dispensing channel. A liquid supply channel is positioned on the substrate in fluid communication with the liquid dispensing channel. A liquid supply passage extends through the substrate in fluid communication with the liquid supply channel. A liquid return passage extends through the substrate in fluid communication with the liquid return channel. A liquid supply provides liquid that flows from each liquid supply channel through each liquid dispensing element to each liquid return channel.

Abstract: A liquid dispenser is provided that includes a liquid supply channel, a liquid dispensing channel, and a liquid return channel. The liquid dispensing channel includes a wall. The wall includes a surface. A portion of the wall defines an outlet opening. Another portion of the wall defines a drain located in the wall downstream from the outlet opening. The drain includes a radius of curvature as viewed from a direction perpendicular to the wall. A liquid is provided that flows from the liquid supply channel through the liquid dispensing channel to the liquid return channel. A liquid drop is caused to be ejected from the outlet opening of the liquid dispensing channel by selectively actuating a diverter member to divert a portion of the flowing liquid through the outlet opening of the liquid dispensing channel.