Hewlett-packard Development Company, L.p.

Hewlett-packard Company

Jeffrey K Pew

Kris M English

David C Johnson

Jeremy A Davis

Takaaki Nakagawa

David N Olsen

David B Johnson

David J Waller

Bradley D Chung

Jafar N Jefferson

James D Plymale

Huy Le

William T Stephenson

Thomas P Abadilla

Thomasp Abadilla

In some examples, printing device temperature management may include ascertaining a print speed associated with a print job, and comparing the print speed to a print speed threshold. Printing device temperature management may further include actuating a power supply associated with a print bar at a start position of physical medium to be utilized for printing for the print job, or at or beyond a specified location along a path associated with traversal of the physical medium from the start position to a print zone to reduce an operational temperature associated with the print bar.

Printing device temperature management

One aspect of this disclosure relates to a printer apparatus, comprising an orifice plate having a nozzle orifice formed therein. Ink can flow through the nozzle orifice. The orifice plate has an orifice plate surface energy and the ink has an ink surface tension. A wiper blade can be disposed proximate the orifice plate. The wiper has a wiper blade surface energy. The wiper blade surface energy is greater than or equal to the ink surface tension. The ink surface tension is greater than or equal to the orifice plate surface energy.

Printer wiper blades based on surface energy

A printhead servicing mechanism comprises a gear assembly actuated by a printhead carriage to move between an engaged position and a disengaged position, and a printhead servicing device actuated by the gear assembly in the engaged position.

Printhead servicing mechanism and method

A capping system for a printhead comprises a frame including first and second surfaces, said second surface inclined with respect to said first surface, and a sealing member adapted for movement on said frame between a nominal position and a sealing position in contact with the printhead, said sealing member including a first support member adapted for rotational movement with respect to said first surface of the frame, and a second support member adapted for translational movement with respect to said second surface.

Capping system for a printhead

A curved wiper blade system is provided for an inkjet printing mechanism to remove ink residue from an inkjet printhead installed in the printing mechanism, here, ill as an inkjet printer. A pair of wiper blades each curve inwardly toward each other, and maintain this curvature during bi-directional wiping strokes. This configuration allows one wiper blade to receive an ink solvent from an applicator and apply the solvent to the ink-ejecting nozzles of the printhead when moving in one wiping direction. When wiping in the opposite direction, one wiper blade also removes ink residue from an interconnect portion of the printhead, as well as from the ink-ejecting orifice plate portion of the printhead.

Curved wiper blade system for inkjet printheads

A ganged inkjet printhead sealing system maintains inkjet printhead health in an inkjet printing mechanism during periods of printing inactivity. In multi-printhead printing mechanisms, separate caps seal against each of the printheads. The caps each have an outlet vent. The vents are all ganged together and fluidically coupled to a single, common pressure regulation chamber that isolates the environment adjacent the printhead nozzles from the external environment when the printheads are capped. A fluid in a U-shaped manometer tube, or an elastomeric bladder are used to isolate the pressure chamber environment. The bladder may be constructed as a thin-walled sheet, a spring-biased bag, or as a bellows. The pressure chamber volume changes to accommodate pressure spikes during the capping process, as well as environmental changes in temperature, elevation, barometric pressure, etc. An inkjet printing mechanism having such a ganged capping system, along with associated capping methods are also provided.

Ganged inkjet printhead capping system

A curved wiper blade system is provided for an inkjet printing mechanism to remove ink residue from an inkjet printhead installed in the printing mechanism, here, illustrated as an inkjet printer. A pair of wiper blades each curve inwardly toward each other, and maintain this curvature during bi-directional wiping strokes. This configuration allows one wiper blade to receive an ink solvent from an applicator and apply the solvent to the ink-ejecting nozzles of the printhead when moving in one wiping direction. When wiping in the opposite direction, one wiper blade also removes ink residue from an interconnect portion of the printhead, as well as from the ink-ejecting orifice plate portion of the printhead.

The present disclosure relates to an ink container for providing ink to an inkjet printhead. The ink container includes a reservoir for containing ink. Also included in the ink container is at least one continuous fiber defining a three dimensional porous member. The at least one continuous fiber is bonded to itself at points of contact to form a self-sustaining structure that is disposed within the reservoir for retaining ink. Ink is drawn from the self-sustaining structure and provided to the inkjet printhead.

Ink reservoir for an inkjet printer

An ink-jet writing system having a pen and a detachable ink reservoir. The pen includes a dual capillarity ink accumulator wherein a balance is provided such that the pen nozzles will neither drool ink nor suck up air when the pen is decoupled from the reservoir. A high capillarity member and a low capillarity member of the accumulator respond to changes in volume of a gas bubble within the pen to absorb or expel ink when operational and ambient atmospheric pressure changes occur.

Dual capillarity ink accumulator for ink-jet

An ink supply is contained in a manner that combines foam and free ink storage to provide high volumetric efficiency, back pressure regulation to protect against ink leakage, and a generally lower cost, easy-to-manufacture assembly. Ink leakage protection is present despite exposure of the supply to substantial variations in temperature and ambient air pressure. The container is divided, and part of the container includes porous material for storing ink. Capillary pressures of the material and of a bubble generator in the free-ink part of the container are selected to control the sequence with which ink is removed from the container parts.

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Lake Oswego, OR, United States of America

Jeffrey K Pew