Patent application number | Description | Published |
20110204018 | METHOD OF MANUFACTURING FILTER FOR PRINTHEAD - A method of manufacturing a membrane filter includes providing a first substrate including a first surface and a second surface; providing a material layer over the first surface of the first substrate; depositing and patterning a first mask layer on a surface of the material layer; etching the material layer exposed through the patterned first mask layer to form a plurality of pore groups, each of the pore groups including a plurality of pores; depositing and patterning a second mask layer on the second surface of the first substrate; and etching the first substrate exposed through the patterned second mask layer to create a plurality of rib structures in the first substrate with a rib structure being located between consecutive pore groups. | 08-25-2011 |
20110205306 | REINFORCED MEMBRANE FILTER FOR PRINTHEAD - A jetting module includes a first substrate, a liquid source, and a second substrate. Portions of the first substrate define a nozzle. The liquid source provides a liquid under pressure sufficient to jet a stream of the liquid through the nozzle. Portions of the second substrate define a filter including a plurality of pores. The filter is positioned between and in fluid communication with the liquid source and the nozzle. The second substrate includes a semi-conductor material. | 08-25-2011 |
20110205319 | PRINTHEAD INCLUDING PORT AFTER FILTER - A printhead includes a liquid source, a first substrate, a filter, and a liquid chamber. Portions of the first substrate define a nozzle adapted to emit liquid from the liquid source. The liquid chamber includes a port. The liquid chamber is in fluid communication with the nozzle and the filter and is positioned between the first substrate and the filter. | 08-25-2011 |
20130257996 | DIGITAL DROP PATTERNING DEVICE AND METHOD - A liquid dispenser array structure includes a liquid dispensing channel. A first liquid supply provides a carrier liquid that flows continuously through an outlet of the liquid dispensing channel during a drop dispensing operation. A plurality of liquid dispensers, located on a common substrate, includes a liquid supply channel and a second liquid supply that provides a functional liquid, immiscible in the carrier liquid, to the liquid dispensing channel through the liquid supply channel. A drop formation device, associated with an interface of the 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. | 10-03-2013 |
20130257997 | DIGITAL DROP PATTERNING DEVICE AND METHOD - A liquid dispensing system includes a liquid dispenser array structure. A first liquid supply provides a carrier liquid that flows continuously through an outlet of a liquid dispensing channel during a drop dispensing operation. A plurality of liquid dispensers, located on a common substrate, includes a second liquid supply that provides a functional liquid, immiscible in the carrier liquid, to the liquid dispensing channel through a liquid supply channel. A drop formation device, associated with an interface of the liquid supply channel and the liquid dispensing channel, is selectively actuated to form discrete drops of the functional liquid in the carrier liquid flowing through the liquid dispensing channel. A receiver conveyance mechanism and the liquid dispenser array structure are positioned relative to each other such that the discrete drops of the functional liquid are applied to a receiver. | 10-03-2013 |
20130258002 | DIGITAL DROP PATTERNING DEVICE AND METHOD - A method of dispensing liquid drops includes providing a liquid dispenser array structure. Liquid dispensers, located on a common substrate, include a liquid supply channel and a drop formation device associated with an interface of a liquid dispensing channel and the liquid supply channel. A carrier liquid is provided by a first liquid supply that flows continuously through an outlet of the liquid dispensing channel during a drop dispensing operation. A functional liquid, immiscible in the carrier liquid, is provided by a second liquid supply to the liquid dispensing channel through the liquid supply channel. The 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 flowing carrier liquid causes the discrete drops of the functional liquid to move through the outlet of the liquid dispensing channel during the drop dispensing operation. | 10-03-2013 |
20130278677 | NOZZLE PLATE INCLUDING PERMANENTLY BONDED FLUID CHANNEL - A printhead includes a nozzle membrane and a plurality of liquid chambers. Portions of the nozzle membrane define an array of nozzles. The nozzle array includes a length and each nozzle of the nozzle array includes an axis. Each of the plurality of liquid chambers is in fluid communication with a respective one of the nozzles of the nozzle array. Each of the plurality of liquid chambers includes a height dimension and a width dimension. The height dimension extends in a direction parallel to the axis of the respective nozzle. The width dimension extends in a direction along the length of the nozzle array. The height dimension and the width dimension have an aspect ratio of less than or equal to 9:1. | 10-24-2013 |
20130280831 | PERMANENTLY BONDED FLUID CHANNEL NOZZLE PLATE FABRICATION - Fabricating a printhead includes providing a silicon wafer including first and second surfaces and a nozzle membrane layer on the first surface of the silicon wafer. The silicon wafer is sized to a thickness ranging from 10 to 250 microns. A plurality of chambers is defined on the second surface of the silicon wafer by depositing and patterning a mask on the second surface of the silicon wafer. The plurality of chambers is formed in the silicon wafer by etching portions of the silicon wafer that are exposed by the mask. A second wafer, permanently bonded to the second surface of the silicon wafer, includes a material property that is compatible with a material property of the silicon wafer. A preformed fluid channel of the second wafer is in fluid communication with the plurality of chambers of the silicon wafer after permanent bonding of the wafers. | 10-24-2013 |
20140253642 | PRINTHEAD INCLUDING COANDA CATCHER WITH GROOVED RADIUS - A printhead includes a jetting module, deflection mechanism, and catcher. The jetting module includes a linear array of nozzles having a pitch and extending along a length of the jetting module. The jetting module is configured to form drops travelling along a first path from liquid jets emitted from the nozzles. The deflection mechanism is configured to cause selected drops to deviate from the first path and begin travelling along a second path. The catcher, positioned to intercept drops travelling along one of the first and second paths, includes a drop contact surface and a liquid removal conduit connected in fluid communication by a Coanda surface including a radial surface having an array of grooves extending in the same direction as that of the nozzle array. For a given groove, the groove is positioned at an angle relative to the drop contact surface. | 09-11-2014 |