Hewlett-packard Company

Hewlett-packard Development Company, L.p.

Other

Agilent Technologies, Inc.

Paul H. Mcclelland

William J. Lloyd

Alfred I. Pan

Laurie S. Mittelstadt

Si-ty Lam

Eric G. Hanson

Christopher A. Schantz

Christopher A Schantz

Eric G Hanson

Paul H McClelland

Wen-Li Su

William J Lloyd

Si-Ty Lam

Laurie S Mittelstadt

Alfred I Pan

Craig M Perlov

Winthrop D Childers

David S Vejtasa

Ronald Hiskes

Jesse Fisher

Paul H Mcclelland

Bruce Cowger

Steven W Trovinger

Michael P Caren

Patrick J Therien

John Phillip Ertel

Peter G Webb

Algird M Gudaitis

Richard Paul Tella

Howard H Taub

William D Fisher

Robert R Beeson

Kyle J Schleifer

William J West

Robert L Cobene, Ii

Raymond G Schuder

Paul R Sorenson

Alfred I Tsong Pan

William Lloyd

Si Ty

The present invention provides for a common substrate with multiple sections, each constituting a separate layer of a memory device. Fold lines are arranged on the substrate to define separate sections and to provide a means for folding the sections on each other to form a multiple-layer memory device. In one application, a substrate has a fold line formed by alterations to the substrate material to form a fold line on the substrate. A first conductor section is formed with an array of parallel conductors or wires spaced across the section. A second section on the common substrate has an array of parallel conductors or wires spaced across the second section, the conductors being perpendicular to the conductors on the first section. The first and second sections are folded along the fold line over on top of each other, after a semiconductor layer has been deposited on one or both of the conductor layers, thereby forming a matrix of memory cells. The fold line is formed by removal of some of the material, such as by perforations or depressions, by deforming the material, such as by creasing, or by altering a property of the material, such as by changing the strength or flexibility of the substrate material. The conductors or the first section may also be fabricated with narrowing cross-section areas at points where fuses are to be set to an open circuit.

Fabrication and assembly structures and methods for memory devices

A drop deposition apparatus, and a method and computer program products using the drop deposition apparatus, for fabricating at least one addressable array of biopolymers on a substrate. The drop deposition apparatus has a drop dispenser unit and a sensing element. The method comprises includes for each of multiple addresses, dispensing droplets carrying the biopolymers or biopolymer precursors from a drop dispenser unit onto the sensing element, and onto the substrate so as to fabricate the array. Electrical signals resulting from dispensed droplets striking the sensing element are detected. A performance characteristic of the deposition apparatus is evaluated based on the detected signals.

Array fabrication with drop detection

Multi-section foldable memory device

A system and method for recycling used hydrocarbon-based carrier liquid removes contaminants from the used carrier liquid and monitors an electrical property of the output carrier liquid so that the carrier liquid can be reused in a predefined application, such as an electrostatic imaging process. The system and method may be integrated into an electrostatic imaging machine.

System and method for recycling hydrocarbon-based carrier liquid

A system and method for extracting carrier liquid utilizes thermal energy generated above a surface from which the carrier liquid is being extracted. The thermal energy can be generated by a heating element positioned over the surface. The thermal energy is used to evaporate the carrier liquid on the surface so that the evaporated carrier liquid can be condensed for collection.

System and method for extracting carrier liquid

Determining inkjet printer pen turn-on voltages is disclosed. An inkjet printer has a number of pens, and a number of sets of nozzles in each pen. Each set of nozzles of a pen is fired at each of a number of voltages, to obtain a voltage-value curve for each set of nozzles. A nozzle turn-on voltage for each set of nozzles is determined based on a maximum slope of its voltage-value curve. The turn-on voltage for each pen is determined based on the nozzle turn-on voltages of the voltage-value curves for its sets of nozzles.

Determining inkjet printer pen turn-on voltages

Systems and methods are described for increasing the binding strength of a bound text body by increasing the spinal surface area exposed for adhesive penetration greater than an area corresponding to the product of the sheet height dimension, the sheet thickness dimension and the number of sheets. In one aspect, sheet-wise conditioning of the binding area is performed prior to the application of adhesive to increase the bond area between sheets of the text body. In another aspect, the spinal surface area exposed for adhesive penetration is increased as adhesive is applied.

Systems and methods of increasing binding strength of a bound text body

The present invention is directed to a system and method for a waste ink removal apparatus for cleaning ink residue from an ink drop detection sensor in a printing mechanism, comprising an assembly pivotally supported by a pivot, the assembly pivoting between a first orientation and a second orientation; an ink drop sensor located on the assembly; a pivoting device connected to the assembly and an absorbent pad located to contact the ink drop sensor when the assembly is in the second orientation, wherein operation of the pivoting device causes the assembly to pivot between the first and second orientations such that waste ink is removed from the ink drop sensor when the assembly is in the second orientation.

Movable ink drop detector pick up for a drop-on-demand printer

An environmental condition detection system for a hardcopy device, such as an inkjet printing mechanism, includes an environmental condition sensor having an optical property which changes in response to a change in an environmental condition, for instance humidity or temperature. The system also has an optical sensor which detects changes in the optical property and generates a signal for a controller that responds by changing an operating parameter of the hardcopy device. A hard copy device having such a environmental condition detection system is also provided, along with a method of determining an environmental condition within which a hardcopy device is operating.

Environmental factor detection system for inkjet printing

An apparatus for detecting ink droplets ejected from ink drop generators has a target holder and a conductive absorbent target supported by the target holder. The apparatus for detecting ink droplets also has standoffs extending from the target holder. The apparatus for detecting ink droplets further has an actuator for moving the target holder towards the ink drop generators such that the standoffs space the target from the ink drop generators.

Ink drop detector

An ink cartridge of a printer includes first and second electrodes on opposite sides of an ink reservoir. Level of ink in the reservoir may be measured by applying a sense signal to the first electrode, detecting a signal at the second electrode, extracting DC content of the detected signal, and using the DC content to determine the ink level.

Ink level sensing method and apparatus

An ink drop detector that minimizes costs of a printer by employing preexisting digital signal processing elements in a printer and low cost analog sensing elements. The analog sensing elements are tuned to ink drop bursts, which include a plurality of ink drops, and the preexisting digital signal processing elements extract ink drop characterization information from sensed analog signals.

Low cost ink drop detector

The system for controlling the back pressure in the reservoir of an ink-jet pen includes a pump for removing air from the reservoir and a vacuum regulator to ensure that the back pressure within the reservoir does not exceed a level that would cause the print head to fail.

Back pressure control in ink-jet printing

Growing community of inventors

Redwood City, CA, United States of America

Christopher A Schantz