Hewlett-packard Development Company, L.p.

Hewlett-packard Company

Other

Jefferson Patrick Ward

Stephen D Panshin

Jay Stephen Gondek

James Michael Gardner

Stephen J Nichols

Scott A Linn

Erik D Ness

David Owen Roethig

David N Olsen

Anthony Donald Studer

Paul L Jeran

David B Novak

Michael W Cumbie

Sirena Chi Lu

Shell Sterling Simpson

Steven B Elgee

Rowdy Kelvin Webb

Amy Shipman

Steven T Castle

Bret K Taylor

Laurent Pizot

John Oliver

Iain Campbell-Brown

Mark Walsh

William James Allen

Mark D Lund

Huston W Rice

J P Harmon

Brian L Helterline

Dawn M Beachnau Hood

Teresa M Cray

Andrew L Van Brocklin

Daryl E Anderson

Wesley R Schalk

Joseph Edward Scheffelin

Jason M Quintana

Jayprakash C Bhatt

Duane A Koehler

Donald L Michael

Mohammad Akhavain

Kris M English

John McNeilly

Gary Douglas Powell

Kevin Rourke

Glenn D McCloy

Frank J Bretl

Erik A Anderson

John Cunningham

Jesse Otto Sutherland, Iii

Steven H Walker

Matthew Allen Shepherd

Ralph L Stathem

Mark S Hickman

Wen-Li Su

Thomas E McCue, Jr

Charles H McConica

Christopher John Arnold

Erick Blane Kinas

Iranpour Khormaei

Loren E Johnson

Thomas W Ruhe

Ranjit Bhaskar

Bartley Mark Hirst

John M Da Cunha

Bruce A Axten

Eric L Ahlvin

Michael Mulloy

Bruce Alan McFadden

Stuart A Scofield

Victorio Chavarria

Volker Smektala

Jesse Otto Sutherland

Holli C Ogle

Joseph H Bauman

Quinton B Weaver

Kenneth D Saul

Christopher Hans Bakker

Dee Lee Chou

Francisco Alcazar

Jean-Frederic Plante

John L McWilliams

David Jeffrey Miller

Marc Yousey

Thomas Berge

Kenneth L Christensen

Lee Walter Jackson

Phillip R Hays

Kerry J Kilk

Marc A Yousey

Alex Michael Oaks

Kyle Michel

Mike Burton

Alberto Albertin

Erik M Peterson

Barbara H Rider

Bryan S Talbot

Peter Le Chevallier

Shawn C Kennedy

Daniel M Holcomb

Phillip A Mcoog

An example method comprising requesting authorization to reprocess a replaceable supply component using first data stored in memory of the replaceable supply component and an interface, the first data including original manufacturing data for the replaceable supply component. The method further comprises, in response to the request, receiving second data using the interface, and appending the original manufacturing data stored in the memory with the second data to designate the replaceable supply component as reprocessed.

Appending data on a replaceable supply component

A logic circuitry package for a print apparatus includes a serial data bus interface to interface with a serial data bus, the logic circuit to respond to messages from the print apparatus over the serial data bus directed to a number of different addresses using different component keys for cryptographic authentication corresponding to each different address, the different component keys related to at least one master key of the print apparatus. The logic circuitry package further includes control logic which, in response to a session initiation request message on the serial data bus from the print apparatus, is to establish a secure communication session related to one of the different addresses, the control logic to cryptographically authenticate responses to each subsequent message of the secure communication session from the print apparatus using a component key corresponding to the address.

Logic circuitry package for print apparatus

In an example, a logic circuit comprising a communications interface including a data contact to communicate via a communications bus, an enablement contact, separate from the communication interface, to receive an input to enable the logic circuit, and at least one memory register, comprising at least one reconfigurable address register. The logic circuit may be configured, such that, when enabled, it responds to communications sent via the communication bus which are addressed to the address held in a reconfigurable address register.

Logic circuitry

A logic circuitry package for a replaceable print apparatus component includes a logic circuit and an interface to communicate with a print apparatus logic circuit. The logic circuit is configured to include a plurality of personalities, each personality of the plurality of personalities including an ID and a cryptographic key. The logic circuit is further configured to start a cryptographic session with the print apparatus logic circuit using a selected personality of the plurality of personalities, and transmit a consumable level value to the print apparatus logic circuit in response to a request from the print apparatus logic circuit independent of which personality of the plurality of personalities is the selected personality.

Logic circuitry packages for replaceable print apparatus components

A print device may include a refill interface, a processor, and a computer readable medium. The refill interface may have an electrical interface for transmission and reception of signals between the print device and a refill container. And the computer-readable medium may have instructions stored thereon that when executed by the processor are to cause the processor to fetch signals, via the electrical interface of the refill interface, from the refill container indicative of a licensed print functionality of the print device. The instructions may also be to enable the licensed print functionality on the print device responsive to the fetched signals and to maintain the licensed print functionality enabled subsequent to detachment of the refill container.

Print device functionalities

An example print supply includes a non-transitory computer-readable medium. The non-transitory computer-readable medium includes data. The data includes an indication of a schema for the data. The data also includes an indication of an identifier. The data includes an indication of a digital signature. The digital signature is usable to authenticate a type of the data, the schema, and the identifier. The print supply also includes a communication interface. The communication interface is to output the data from the non-transitory computer-readable medium.

Digitally signed data

A logic circuitry package for a replaceable print apparatus component comprises an interface to communicate with a print apparatus logic circuit, and at least one logic circuit. The logic circuit may be configured to identify, from a command stream received from the print apparatus, parameters including a class parameter, and/or identify, from the command stream, a read request, and output, via the interface, a count value in response to a read request, the count value based on identified received parameters.

A transform wrapper is stored on a memory device and the memory device may be included in a printer cartridge. The transform wrapper may dynamically build a transform map for a printer based on metadata stored at the memory device. The metadata may indicate at least one of a type of depositing material, transform map, print media and printer.

Transform map at printer cartridge

In an example implementation, a print supply cartridge comprises a microcontroller to receive a timing challenge and enable authentication of the cartridge by providing a challenge response. The challenge response is provided in a challenge response time that falls within an expected time window.

Supply authentication via timing challenge response

In an example, a method comprises, by logic circuitry associated with a replaceable print apparatus component, responding to a first validation request sent via an I2C bus to a first address associated with the logic circuitry with a first validation response; and responding to a second validation request sent via the I2C bus to a second address associated with the logic circuitry with a second validation response.

Examples for determining printing device functionality based on consumption and payment are described herein. In some examples, signals indicative of an amount of utilized print consumable by a printing device and signals indicative of payment for the amount of utilized print consumable are received at a computing device. Signals to cause the printing device to alter a functionality based on the signals indicative of an amount of utilized print consumable and the signals indicative of payment for the amount of utilized print consumable are transmitted by the computing device.

Printing device functionality based on consumption and payment

In an example, replaceable print apparatus component authentication apparatus comprises a memory and circuitry. An electrical characteristic of the circuitry may be variable in response to a stimulus, and the memory may store data indicative of an expected variation in the electrical characteristic in response to the stimulus which is associated with a variation in capacitance.

Print apparatus component authentication

A print supply, the print supply containing a print material and to connect to a printing device to provide the print material to the printing device that includes a container to maintain the print material, an integrated circuit coupled to the box to interface electrically with the printing device, and a load cell communicatively coupled to the integrated circuit to detect a weight of the print liquid supply.

Load cells for print supplies

In an example, a method includes, by logic circuitry associated with a replaceable print apparatus component installed in a print apparatus, responding to a sensor data request received from the print apparatus by returning a first response; receiving a calibration parameter from the print apparatus; and returning a second response which is different from the first response.

Logic circuitry for sensor data communications

A method at a print device may include receiving, from a supply, signals indicative of a print functionality from a set of authorizable functionalities for the print device. The set of authorizable functionalities may comprise: (1) a color depletion print mode, (2) an increased resolution print mode, (3) a refill pump increased speed mode, or a combination thereof. The method may also include enabling the print functionality on the print device based on the received signals.

Growing community of inventors

Brush Prairie, WA, United States of America

Jefferson Patrick Ward