Hewlett-packard Development Company, L.P.

Hewlett-packard Company

Hewlett-packard Corporation

Axiohm Transaction Solutions, Inc.

Dh Technology Inc.

Robert M Yraceburu

Steve Orrin Rasmussen

Duane A Koehler

Elliott Downing

Daniel James Magnusson

Bruce G Johnson

Stephen J McNally

James O Beehler

Matthew Douglas Reier

Timothy Jacob Luedeman

Jason S Belbey

Geoff Wotton

Brooke Hoyer

Steven B Elgee

David E Smith

Dawn M Beachnau Hood

Stuart Douglas Spencer

Cristopher Royce Jansson

Steven P Downing

Weiyun Sun

William F Winters

Stuart A Scofield

Vance M Stephens

Francisco Alcazar

Robert Scott Beale

Matthew Allen Shepherd

Mark H MacKenzie

Russel Hugh Marvin

Alan Shibata

Louis C Barinaga

Stephen G Brown

Michael K Bowen

Gene D Jones

Michael W Munro

Angela S Chen

Michael S Millman

Victor Bruhn

Dean A Gaylor

Milan Justel

Robert J Brice

David J Walson

Lonny Morgan

Bernard V Masson

Catherine Elizabeth Gould

Tom McCue

Dan R Carrington

Earney Stoutenburg

Paul J Vogt

Michael V Fell

Richard Olson

Arturo Ayala

David N Olsen

Wesley R Schalk

Mark S Hickman

Raymond C Sherman

John D Rhodes

Luke P Sosnowski

Thomas W Ruhe

Matthew Raisanen

Todd Michael Gaasch

Richard Lee Brinkly

Jody L Clayburn

Michael J Allison

James M Brenner

Charles Hugh Oppenheimer

Kenneth B Wade

Peter J Boucher

Lorraine T Golob

David Whalen

Francisco Javier Gomez Maurer

Anthony W Ebersole

Michel Anthony Riou

Angela Chen Krauskopf

Kynan Lon Church

Paul M O'Brien

Benjamin Whitney Griffith

Peter C Nicholson

Hunter Dane Cantrell

Francisco Javier Gomez

Gunay Ozturk

Robert J Reichert

Mark H MacKenize

Jeffrey C O'Bryan

Bartley Helms

Jonathon Cha Spafford

Robert Reiss

Vladislav Shapoval

Bryan F Bihimaier

Parveen Sidhu

Bryan Bihlmaier

Jim Beehler

Kenneth Blaine Wade

Stuart Scofield

Mark H Mackenzie

A fluid level sensing system includes: a sensor electrode to extend into a fluid reservoir, the sensor electrode including (i) a first segment of a first material having a first conductivity, and (ii) a second segment of a second material having a second conductivity; and a controller connected to the sensor electrode, to: detect a response from the sensor electrode to an input applied to the fluid reservoir; and determine, based on the response, which of the first and second segments are in contact with fluid in the fluid reservoir.

Composite electrode fluid level sensing

According to examples, an apparatus may include a processor that may identify a first period for a heated system, the first period including a first set of power events and a first zero power event for the heated system and may identify a second period for the heated system, the second period including a second set of power events and a second zero power event for the heated system. The processor may also borrow, from the second period, a portion of a second power event of the second set of power events and may apply the borrowed portion of the second power event to a first power event of the first set of power events during the first period to remove the first zero power event from the first period.

Reduce zero power events of a heated system

In some examples, a system can include: a heating device, a Proportional Integral Derivative (PID) controller and a switching mechanism to selectively enable transmission of signals to the heating device based on a real time temperature in proximity to the heating device, wherein the PID controller is to continuously output pulse width modulation (PWM) signals independent of selective transmission of signals by the switching mechanism.

Signals controllers

In an example, a clamp may include a chassis, a swingarm disposed on the chassis, a clamp wheel disposed on a first end of the swingarm to engage with a drag portion of the chassis, and an auxiliary bias member to exert a force against the clamp wheel to resist a rotation of the clamp wheel. The force may periodically increase in magnitude.

Media clamps with roller on a swingarm

An example system may comprise a media support including a wall and a base and a restraining extension extending in a first direction to constrain print media, when present, to a space below the restraining extension.

Restraining extensions

A finisher apparatus includes an actuator to control a component of the finisher apparatus to perform a finishing operation on a print medium. A sensor is provided to sense the print medium in a print-medium path in the finisher apparatus. A processor is coupled to the actuator and the sensor. The processor is to execute instructions. The instructions are to actuate the actuator to eject the print medium from the print-medium path in response to a signal from the sensor indicative of a jam of the print medium in the finisher apparatus.

Finishers to eject jammed print media

In some examples, a media conditioner includes a conveying component to convey a sheet of printable media, a heating element to heat the conveying component, a temperature sensor to measure a temperature of the conveying component, a media sensor to detect the sheet of printable media, and a controller to provide a power level to the heating element. A temperature set-point is set to a pre-established value. Based on data from the temperature sensor, the controller is to maintain the temperature of the conveying component at the temperature set-point by varying the power level. The controller is to apply a boost to the power level based on a signal from the media sensor while the temperature set-point remains at the pre-established value.

Control of heating elements for media conditioners

In some examples, a gimbaled monoclamp can include a housing including a first opening, a second opening, and a pivot point, a clamp disposed at least partially in the housing and including a first pad and a second pad to extend through the first opening and the second opening, respectively, and a pin extending through an opening in the clamp into the pivot point to couple the clamp to the housing in a gimbaled manner.

Gimbaled monoclamps

Example printer finishing apparatus are described herein. An example printer disclosed herein includes an alignment guide, a track to align a sheet relative to the alignment guide, a clamp to move between a raised position and a lowered position relative to the sheet, and a force applicator coupled to the clamp. The force applicator is to cause the sheet to engage the alignment guide when the clamp is in the lowered position.

Printer finishing apparatus

Power allocation in printing devices is disclosed. Independent load requests are received from printing device heater systems. A first load request is received from a first heater system and a second load request is received from a second heater system. Power grants are allocated based on a general power arbitration of a power source in response to the independent load requests. The power grants include a first power grant based on the first load request and a second power grant based on the second load request. The power grants are adjusted based on a contextual printing condition. The power grants are adjusted to apportion a measure of the second power grant to the first power grant rather than provide the measure of the second power grant to the second heater system if a print substance density is outside a selected print substance density threshold.

Power allocation in printing devices

According to examples, a heated system may include a heat generating device, a temperature sensor to detect temperature in the heated system, and a controller. The controller may store temperatures detected by the temperature sensor over time and based on a determination that the temperature in the heated system has reached a predefined temperature value, stop application of power to the heat generating device. The controller may also calculate a rate of change of the stored temperatures corresponding to a predefined period of time prior to the application of power to the heat generating device being stopped, may determine a seeding value for a control mechanism of the heat generating device based on the calculated rate of change, and based on aa determination that a predefined condition has occurred, control the control mechanism to apply power to the heat generating device beginning with the determined seeding value.

Control of a heated system temperature

Power allocation in printing devices is disclosed. Independent load requests are received from printing device heater systems. Power grants are allocated based on a general power arbitration of a power source in response to the independent load requests. A power grant is adjusted based on a contextual printing condition to provide an adjusted grant from the power source to a printing device heater system of the printing device heater systems.

A volt meter and a current meter may measure a voltage and a current for the calculation of power consumption. A controller may calculate the power consumption when a heating element is activated and when the heating element is deactivated. Based on the power consumptions when the heating element is activated or deactivated, a failure condition may be determined.

Determinations of failure conditions based on power consumptions

Apparatus, systems, articles of manufacture, and methods to provide an adaptive connection of a resistive element and a temperature-dependent resistive element are disclosed. An example apparatus includes a temperature-dependent resistive element. The example apparatus further includes a resistive element. The example apparatus further includes a switch coupled to the temperature-dependent resistive element and the resistive element. The example apparatus further includes a current sensor to measure a current through the temperature-dependent resistive element. The example apparatus further includes a processor to control the switch to, based on the measured current, (A) couple the temperature-dependent resistive element in parallel to the resistive element or (B) couple the temperature-dependent resistive element in series with the resistive element.

Adaptive connection of resistive elements and temperature-dependent resistive elements

Example implementations relate to print media stacks. In some examples, a device may include a sheet channel to guide a sheet of print media within the sheet channel above and separated in a vertical direction from a stack of printed media when the sheet of print media exits a print path of a printer. The device may include a plurality of clamps to control alignment of the sheet of print media on the stack of printed media when the sheet channel moves outboard from the sheet of print media to allow the sheet of print media to fall onto the stack of printed media, wherein the plurality of clamps sequentially pin the sheet of print media to the stack of printed media from a middle portion of the sheet of print media outward.

Print media alignments

Growing community of inventors

Camas, WA, United States of America

Robert M Yraceburu