Hewlett-Packard Development Company, L.p.

Javier González Bruno

Eduardo Martin Orue

Juan Luis López Rodriguez

David Soriano Fosas

Sergio De Santiago Dominguez

Jordi Ferran Cases

Pere Esterri Pedra

Ignacio Soler Flores

Ismael Chanclón Fernández

Sergio De Santiago Domínguez

Félix Ruíz Martínez

Eduard Pamies Corominas

Eduardo Martín Orue

Sergio Alejandro López Ramos

A printing apparatus comprises a print zone and a media handling system for advancing media through a media path and through the print zone, wherein the media handling system comprises a first media driving arrangement positioned downstream of the print zone in the direction of advance of the media, and a second media driving arrangement positioned downstream of the first arrangement, the second media driving arrangement being operable to cause the tension of the media in a deformation zone between the two driving arrangements to be lower than the tension of the media in the print zone.

Printing apparatus and printing methods

A power control unitcontrols the power consumed by a systemhaving a plurality of electrical power consumption states including an active state and at least one power saving state. The system comprises a plurality of subsystemseach having a plurality of subsystem power states including an active state and at least one power saving state. The electrical power consumption states of the system correspond to respective different configurations of subsystem power states of the subsystems and the power control unit is arranged for signal interface with the subsystems and a power supply unitof the system for controlling the subsystem power states of each of the subsystems and the power supplied to each of the subsystems by the power supply unit dependent on the required power consumption state of the system.

System power control using a power supply to provide voltage to subsystems in which a subsystem determines its operating state based on the voltage received by the subsystem

A printhead control system comprises a voltage supply control module to selectively supply an operating voltage to a printhead, and the voltage supply control module is configured to receive a first and a second control voltages, and to disconnect the supply of operating voltage to the printhead at least when the first and second control voltages have the same logical level.

Printhead control systems and methods for controlling a printhead

A position encoder signal control system is disclosed. A position encoder input line receives a position encoder signal and a diagnostic input line receives a position encoder diagnostic signal. An output line is couplable to a position encoder output channel and a controller selectively connects one of the position encoder input line and the diagnostic input line to the output line.

Position encoder systems

A method and apparatus for controlling firing energy in a printer pen of a thermal inkjet printer are described. A digital voltage value representative of a voltage output by a printer-pen power supply is obtained. The printer-pen power supply is electrically coupled to a switch. The switch is electrically coupled to a nozzle resistor and is controlled using a switch logic signal. A voltage level of the switch logic signal is set based on said digital voltage value and a voltage drop due to a parasitic resistance between the printer-pen power supply and the switch.

Printer control method and system

A current mirror comprises first and second sets of transistors. each of the first and second sets is a matched set comprising a first transistor and a second transistor. For each set, the base of the first transistor is directly coupled to the base of the second transistor. For one of the first and second transistors of each set the base is directly coupled to the collector. The collectors of the first and second transistors of the first set are coupled, respectively, to the emitters of the first and second transistors of the second set in series. A current output of the current mirror is coupled between the collector of the second transistor of the first set and the emitter of the second transistor of the second set.

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Terrassa (Barcelona), Spain

Javier González Bruno