Hewlett-packard Development Company, L.P.

Dan Dowell

Joseph Edward Scheffelin

Kenneth R Williams

Jeffrey T Hendricks

Norman E Pawlowski

Mark A Devries

Louis C Barinaga

Norman Pawlowski, Jr

Joe Elliot

In one embodiment, an assembly includes: a print bar; first and second guide rods oriented parallel to one another; a first bracket slidable along the first guide rod and connected loosely to one end of the print bar; and a second bracket slidable along the second guide rod and connected loosely to the other end of the print bar. In another embodiment, a method includes: directly constraining a print bar in Z and theta Y at a first connection; indirectly constraining the print bar in theta Y at a second connection; and neutralizing the theta Y constraint at the second connection through a third connection between the first connection and the second connection.

Print bar lift and method

A fluid dispensing apparatus including a fluid ejector unit having a plurality of nozzles and extending in a lengthwise direction to form a dispensing area to correspond with a width of a substrate, the fluid ejector unit configured to eject fluid through the nozzles to the dispensing area, a plurality of modular regulator members configured to regulate fluid to a predetermined pressure range and to provide the regulated fluid to a corresponding set of nozzles of the fluid ejector unit, the modular regulator members are arranged in the lengthwise direction such that each of the modular regulator members are adjacent to at least one other modular regulator member, and a fluidic channel unit having at least one fluid inlet and a plurality of fluid channels configured to provide fluid to the respective modular regulator members.

Fluid dispensing apparatus

In one embodiment, an assembly includes a lift and a print bar mounted to the lift. The lift includes first and second guide rods oriented parallel to one another and perpendicular to an axis of the print bar across the print zone. The first end of the print bar is slidably connected to the first guide rod, the second end of the print bar is slidably connected to the second guide rod, and the lift is configured to simultaneously move both ends of the print bar along the guide rods. In another embodiment, an assembly includes a chassis and a lift supported by the chassis. The lift is configured to loosely hold a print bar and to raise and lower the print bar over a print zone such that both ends of the print bar move simultaneously.

Print bar lift

In one embodiment, a print bar structure includes a single part having: a datum; an exterior printhead attach surface a predetermined distance from the datum for attaching multiple printheads to the print bar structure; an interior bay for holding a liquid distribution part; and multiple openings from the interior bay to the exterior printhead attach surface.

Print bar structure

An overmolded diaphragm pump for applying pumping force to a fluid such as liquid ink for ink-jet printing. The pump structure includes a rigid substrate having at least one chamber opening, and an elastomeric diaphragm and sealing structure fabricated of an elastomeric material. This diaphragm and sealing structure is overmolded over a portion of the rigid substrate and includes at least one diaphragm portion extending over a corresponding chamber opening. A gland seal portion makes a seal between the elastomeric diaphragm and sealing structure and a mating part.

Growing community of inventors

Albany, OR, United States of America

Dan Dowell