Funai Electric Company Ltd.

Lexmark International, Inc.

Sean Terrance Weaver

David Christopher Graham

Craig Michael Bertelsen

David L Bernard

Brian Christopher Hart

Rich Wells

Gary Raymond Williams

Melissa Marie Waldeck

James Daniel Anderson, Jr

Andrew McNees

Girish Shivaji Patil

Christopher Allen Craft

Paul Timothy Spivey

Gary Anthony Holt, Jr

Paul William Dryer

Xiaoming Wu

Eric Spencer Hall

Mary Claire Smoot

Greg Long

Bart Mansdorf

Johnathan Lee Barnes

Joel P Provence

Tim Frasure

Michael Anthony Marra, Iii

Frank Edward Anderson

Adam Jude Ahne

Randall David Mayo

Yimin Guan

James M Mrvos

Byron Vencent Bell

Patrick Laurence Kroger

Johnny Dale Massie, Ii

Kelly Ann Killeen

Jiandong Fang

Richard Lee Warner

Xiaorong Cai

Masaki Nakatani

Kin Ming Kwan

Eunki Hong

Burton Joyner, Ii

Jonathan H Laurer

David Bruce Rhine

Bryan Thomas Fannin

Richard D Wells

Zach Reitmeier

Elaine Yeap Money

Eric Louis Killmeier

Richard Leo Hubert, Ii

Jacob Boyle

Andrew L McNees

Michael A Marra Iii

James D Anderson Jr

Christopher A Craft

A nozzle plate of a fluid ejection head for a fluid ejection device, a fluid ejection head containing the nozzle plate, and a method for making the fluid ejection head containing the nozzle plate. The nozzle plate includes an array of nozzle holes and a fluid channel layer attached to an exposed surface of the nozzle plate, wherein the fluid channel layer comprises a fluid channel formed in the fluid channel layer adjacent to each nozzle hole for urging fluid from each nozzle hole.

Self-cleaning nozzle plate

A nozzle plate of a fluid ejection head for a fluid ejection device, a fluid ejection head containing the nozzle plate, and a method for making the fluid ejection head containing the nozzle plate. The nozzle plate includes at least two arrays of nozzle holes on opposing sides of a fluid supply via etched in an ejection head substrate and a photoresist layer attached to an exposed surface of the nozzle plate spanning a section of the nozzle plate between the at least two arrays of nozzle holes. The photoresist layer increases a thickness of the nozzle plate between the at least two arrays of nozzle holes to greater than 25 microns up to about 100 microns.

Photoimageable nozzle plate having increased solvent resistance

A method of generating a microfluidic ejection chip is provided. The method includes creating an opening in a silicon substrate through multiple iterations of a deep reactive ion etching process, forming a passivation layer over any exposed portion of silicon at the opening following each iteration of the deep reactive ion etching of the silicon substrate, and not removing the passivation layer at a conclusion of the etching of the silicon substrate to define a fluid passageway at the opening in the silicon substrate, such that the passivation layer is permanent on the silicon substrate at the opening.

Microfluidic chip, head, and dispensing device for dispensing fluids containing an acidic component

A composite photoresist material and method of making the composite photoresist material. The composite photoresist material includes: a photoresist layer devoid of a phenoxy resin, and a photoresist layer containing a phenoxy resin.

Solvent compatible nozzle plate

A fluid ejection head for a fluid jet ejection device and a method for improving adhesion between a nozzle plate and a flow feature layer of the ejection head. The fluid ejection head includes a silicon substrate containing at least one array of fluid ejectors deposited thereon. At least one fluid supply via is etched through the silicon substrate adjacent to the at array of fluid ejectors. A flow feature layer is attached to the silicon substrate. The flow feature layer contains at fluid chambers and fluid flow channels corresponding the array of fluid ejectors for ejecting fluid provide fluid from the at least one fluid supply via to fluid chambers. At least a portion of the flow feature layer comprises an attachment surface having improved surface adhesion characteristics, and a nozzle plate containing nozzle holes is laminated to the flow feature layer to provide the fluid ejection head.

Photoresist imaging and development for enhanced nozzle plate adhesion

A fluid cartridge having a plastic fluid body, a bottom wall having a fluid supply opening therein. A metal insert is adhesively attached to the bottom wall. The metal insert has a fluid supply slot therein corresponding to the fluid supply opening in the bottom wall, a die bond surface adjacent to the fluid supply slot for adhesively attaching an ejection head chip thereto, and a plurality of air vents adjacent to the die bond surface. An ejection head chip is adhesively attached to the die bond surface of the metal insert.

Fluid cartridge with vented insert

A planarization layer and method therefor. The planarization layer has a thickness ranging from about 2 to about 3 microns, and contains from about 8.0 to about 8.5 wt. % photoacid generator; from about 2 to about 3.6 wt. % photoinitiator; from about 0.35 to about 0.5 wt. % green dye; from about 35 to about 46 wt. % multifunctional epoxy compound; from about 35 to about 50 wt. % of one or more difunctional epoxy compounds; and from about 1 to about 2.6 wt. % silane adhesion promoter, wherein all weight percent is based on a total weight of the layer devoid of solvent.

Photoresist formulation

A microfluidic ejection chip includes a silicon substrate having a fluid passageway. The fluid passageway is defined by a silicon sidewall of the silicon substrate that is covered by a permanent passivation layer to protect the silicon sidewall from exposure to an acidic fluid. The permanent passivation layer is retained on the silicon sidewall at a conclusion of etching of the silicon substrate to form the fluid passageway.

A nozzle plate of a fluid ejection head for a fluid ejection device, a fluid ejection head containing the nozzle plate, and a method for making the fluid ejection head containing the nozzle plate. The nozzle plate contains two or more arrays of nozzle holes therein and a barrier structure disposed on an exposed surface of the nozzle plate between adjacent arrays of nozzle holes, wherein the barrier structure deters cross-contamination of fluids between the adjacent arrays of nozzle holes.

Photoimageable nozzle member for reduced fluid cross-contamination and method therefor

A method of forming a print head, by forming a heater chip. Via zones having peripheries are defined on a substrate, with heaters formed along the entire peripheries of the via zones. Traces that electrically connect to each of the heaters are formed. In some embodiments, the heater chip is then stored for a period of time. After storing the heater chip, vias are formed in only a selected portion of the via zones, which is a subset of the via zones. A channel layer is formed on the heater chip by forming a first layer on the heater chip. Flow channels are formed in the first layer from the vias to only those heaters on the heater chip that are disposed along the selected portion of the via zones. Bubble chambers are formed in the first layer around only those heaters on the heater chip that are disposed along the selected portion of the via zones. A nozzle plate in formed on the channel layer by forming a second layer on the first layer, and forming nozzles in the second layer above only those heaters on the heater chip that are disposed along the selected portion of the via zones.

Customization of multichannel printhead

A fluidic ejection cartridge and protective tape therefor. The cartridge includes a cartridge body for an organic solvent-based fluid having a cover closing a first end thereof, an ejection head on a second end thereof and side walls attached to the first and second ends between the first and second ends. The side walls include a first side wall, a second side wall opposite the first side wall, a first end wall attached to the first and second side walls, and a second end wall opposite the first end wall attached to the first and second side walls. A removable tape is attached to a nozzle plate of the ejection head and to a portion of the first side wall. The removable tape contains a polymeric backing film and a glass-filled, platinum-cured silicone adhesive. The glass-filled, platinum-cured silicone adhesive is cross-linked with silane and a second cross-linking agent.

Sealing tape for organic solvent-based fluidic cartridges

An improved photoimageable dry film formulation, a fluidic ejection head containing a thick film layer derived from the improved photoimageable dry film formulation, and a method for making a fluidic ejection head. The improved photoimageable dry film formulation includes a multifunctional epoxy compound, a photoinitiator capable of generating a cation, a non-photoreactive solvent, and from about 0.5 to about 5% by weight a silane oligomer adhesion enhancer based on a total weight of the photoimageable dry film formulation before drying.

Dry film formulation

A fluidic ejection cartridge and protective tape therefor. The fluidic ejection cartridge has a cartridge body for an organic solvent-based fluid having a cover closing a first end thereof, an ejection head on a second end thereof opposite the first end, and side walls attached to the first and second ends between the first and second ends, wherein the side walls comprise a first side wall, a second side wall opposite the first side wall, a first end wall attached to the first and second side walls, and a second end wall opposite the first end wall attached to the first and second side walls. A removable tape is attached to a nozzle plate of the ejection head and to a portion of the first side wall, wherein the removable tape comprises a polymeric backing film and a platinum-cured silicone adhesive.

Organic solvent sealing tape

A three-dimensional ('3D') structure for handling fluids, a fluid handling device containing the 3D structure, and a method of making the 3D structure. The method includes providing a composite photoresist material that includes: (a) a first layer devoid of a hydrophobicity agent and (b) at least a second layer comprising the hydrophobicity agent. The composite photoresist material is devoid of an adhesion promotion layer between layers of the composite photoresist material.

Method for manufacturing MEMS devices and nano devices with varying degrees of hydrophobicity and hydrophilicity in a composite photoimageable dry film

A fluidic ejection cartridge is disclosed. The cartridge includes a cartridge body having an upper portion, a lower portion, at least one sidewall, and a hollow cavity within the cartridge body defining a fluid reservoir. The cartridge also includes a cartridge lid disposed over and sealed to the upper portion of the cartridge body, as well as a cartridge bottom plate disposed under and sealed to the lower portion of the cartridge body. A cartridge nosepiece is disposed under and sealed to the cartridge bottom plate. This nosepiece includes at least one fluidic ejection chip in fluid flow communication with the fluid reservoir. According to the present disclosure, the cartridge body, the cartridge lid, and the cartridge bottom are each made from ceramic.

Fluidic ejection cartridge with molded ceramic body

Growing community of inventors

Union, KY, United States of America

Sean Terrance Weaver