Hewlett-packard Development Company, L.p.

Matthews International Gmbh

Hewlett-packard Company

Videojet Technologies Inc.

Other

Hewlett-packard Development, L.p.

Charles Craig Haluzak

Chien-Hua Chen

Kenneth E Trueba

Martha A Truninger

William Allen Buskirk

Kirby Sand

Eric R Miller

Steven E Flego

John Whitlock

John R Sterner

David M Craig

Glenn J T Leighton

Donald W Schulte

Terry E McMahon

Donald L Michael

Terry M Lambright

Anthony Selmeczy

Francis Chee-Shuen Lee

Arthur Piehl

Michael John Regan

Colby Van Vooren

Jeff Hess

Bradley Bower

Quan Qi

Ken Trueba

Douglas A Sexton

Michael G Monroe

Jeffrey R Pollard

John Liebeskind

Steven David Leith

Charles Gilson

William R Boucher

John P Whitlock

Jennifer Shih

Don Michael

Mari J Rossman

John Kane

Phillip R Coffman

Timothy L Weber

James W Ring

Scott A Lerner

Brian G Risch

Mark A Smith

Eric Lee Nikkel

David R Thomas

Dustin W Blair

Brett E Dahlgren

Timothy E Beerling

Richard W Seaver

Kenneth James Faase

John P Folkers

Casey Robertson

Mark R Thackray

James A Mott

Bao-Sung Bruce Yeh

Thomas E Kimerling

Ronnie Yenchik

Stephen Jalrus Potochnik

James Denning Smith

Henry Kang

Paul Felice Reboa, Jr

Timothy S Hostetler

Christopher C Aschoff

Mickey Szepesi

Christopher Cocklan

Curtis L Nelson

Charles R Blakely

Wayne E Verley

John R Stemer

Brian Dunn

Paul C Jensen

Glenn Jt Leighton

William A Buskirk

Glenn JT Leighton

A marking system includes a valve body including an orifice plate including multiple orifices and multiple micro-valves. Each micro-valve includes an actuating beam movable from a closed position in which a corresponding one of the orifices is sealed by a portion of the actuating beam such that the micro-valve is closed, into a peak position in response to application of a control signal. A controller is configured to generate a control signal for each of the actuating beams, each control signal including a drive pulse having a predetermined voltage such that the actuating beam moves from the closed position into the peak position in which the corresponding orifice is open and returns to the closed position in a characteristic period, wherein the drive pulse has a duration that substantially corresponds to the characteristic period such that the actuating beam is in the closed position after the drive pulse is complete.

Systems and methods for controlling operation of micro-valves for use in jetting assemblies

A micro-valve includes an orifice plate having a first surface, a second surface and an orifice extending from the first surface to the second surface. An actuating beam is disposed in spaced relation to the orifice plate. The actuating beam includes a base portion and a cantilevered portion. The base portion is separated from the orifice plate by a predetermined distance. The cantilevered portion extends from the base portion such that an overlapping portion thereof overlaps the orifice. The actuating beam is movable between a closed position and an open position. The micro-valve also includes a sealing structure including a sealing member disposed at the overlapping portion of the cantilevered portion. When the actuating beam is in the closed position, the cantilevered portion is positioned such that the sealing structure seals the orifice so as to close the micro-valve.

Systems and methods for sealing micro-valves for use in jetting assemblies

A micro-valve includes an orifice plate including a first surface and a second surface, and an orifice extending from the first surface to the second surface. The micro-valve also includes a spacing member disposed on the first surface and offset from the orifice, a valve seat disposed on the first surface. The valve seat defines an opening in fluid communication with the orifice in a flow direction. The micro-valve also includes an actuating beam disposed on the spacing member extending from the spacing member toward the orifice, the actuating beam being moveable between an open position and a closed position. The micro-valve also includes a sealing member affixed to an end portion of the actuating beam. In a closed position, a sealing surface of the sealing member contacts the valve seat to close the micro-valve.

Micro-valves for use in jetting assemblies

A method of constructing a micro-valve includes providing a substrate for an actuating beam of the micro-valve, the substrate including a first surface and a second surface. The method also includes forming a plurality of constituent layers on the first surface of the actuating beam, including a layer of piezoelectric material. The method also includes removing a portion of the substrate from at least one of the first surface or the second surface to define a cantilevered portion of the actuating beam. The method also includes providing an orifice plate including an orifice. The method also includes providing a valve seat on a surface of the orifice plate, the valve seat having an opening aligned with the orifice. The method also includes attaching the surface of the orifice plate to the second surface via an adhesive such that an overlapping portion of the cantilevered portion overlaps the orifice.

Methods of fabricating micro-valves and jetting assemblies including such micro-valves

A micro-valve includes an orifice plate including an orifice. The micro-valve further includes an actuating beam having a first end and a second end. The actuating beam also includes a base layer and a layer of piezoelectric material disposed on the base layer, a bottom electrode layer, and a top electrode layer. At an electrical connection portion of the actuating beam, the layer of piezoelectric material includes a first via, and a portion of the top electrode layer disposed within the first via, and a portion of the bottom electrode disposed beneath the first via. The actuating beam includes a base portion extending from the electrical connection portion and a cantilevered portion extending from the base portion. The cantilevered portion is movable in response to application of a differential electrical signal between the bottom electrode layer and the top electrode layer to one of open or close the micro-valve.

Electrode structures for micro-valves for use in jetting assemblies

A package for a micro-electromechanical device (MEMS package) includes an inner enclosure having an inner cavity defined therein, and a fill port channel communicating with the inner cavity and of sufficient length to allow a quantity of adhesive to enter the fill port channel while preventing the adhesive from entering the inner cavity.

Package for a micro-electro mechanical device

An inkjet printing system includes a print head in fluid communication with an ink reservoir and having a plurality of orifices and a corresponding plurality of associated ejection chambers. The print head includes a substrate and a barrier layer disposed on the substrate. The barrier layer defines in part a plurality of fluid channels and the plurality of ejection chambers. The barrier layer includes a material selected from epoxy-based photo resist materials and methyl methacrylate-based photo resist materials. An orifice plate is disposed over the substrate. The orifice plate includes the plurality of orifices in fluid communication with the ejection chambers. The system includes a reservoir containing an organic solvent-based ink composition, wherein the ink composition includes an organic solvent selected from C-Calcohols, C-Cketones, C-Cesters, C-Cethers, and mixtures thereof, in an amount 60% or more by weight of the ink composition.

Thermal inkjet print head with solvent resistance

A method of preparing an inkjet printing system with a print head in fluid communication with an ink reservoir and having a plurality of orifices and a corresponding plurality of associated ejection chambers includes providing a substrate and disposing a photoresist material on the substrate. A mask is provided between the UV light source and the photoresist material. The photoresist material is exposed to the UV light source to polymerize the photoresist material to form a barrier layer on the substrate. The barrier layer defines in part a plurality of fluid channels and the plurality of ejection chambers. An orifice plate is attached over the substrate. The orifice plate includes a plurality of orifices in fluid communication with the ejection chambers.

An apparatus includes a Micro Electrical Mechanical System (MEMS) having electrical contacts and a MEMS device in electrical communication with the electrical contacts. A lid is oriented over the MEMS device and not the electrical contacts. The lid has a base region and a top region, the base region being wider in dimension than the top region and oriented in closer proximity to the MEMS device than the top region.

Micro electrical mechanical system

An inkjet printing system includes a print head in fluid communication with an ink reservoir and having a plurality of orifices and a corresponding plurality of associated ejection chambers. The print head includes a substrate and a barrier layer disposed on the substrate. The barrier layer defines in part a plurality of fluid channels and the plurality of ejection chambers. The barrier layer includes a material selected from epoxy-based photo resist materials and methyl methacrylate-based photo resist materials. An orifice plate is disposed over the substrate. The orifice plate includes the plurality of orifices in fluid communication with the ejection chambers. The orifice plate comprises a material selected from polyimides and nickel.

A transducer capable of generating vibrational energy is positioned relative to an inkjet cartridge to impart a vibrational force to simultaneously vibrate at least a portion of each of a plurality of ink fluidic columns associated with a plurality of nozzles in a printhead of the inkjet cartridge to maintain or recover nozzle function.

System and method for maintaining or recovering nozzle function for an inkjet printhead

One embodiment of a microelectronic component system includes a base adapted for supporting a microelectronic component, a membrane sealed to the base, and a glass lid built-up on the membrane and hermetically sealing the membrane.

Microelectronic device

Growing community of inventors

Corvallis, OR, United States of America

Charles Craig Haluzak