Hp Indigo B.v.

Hewlett-packard Indigo B.v.

Ziv Yosef

Alex Feygelman

Shachar Berger

Mordechai Arenson

Sagie Shanun

David Sabo

Eric G Nelson

Blair A Butler

Zvika Cohen

Sarah Ann Russell

Shay Rahamim

Scott Sayer

A roller charging device may include a Y-shaped electrically conductive brush and a screw terminal coupling the Y-shaped electrically conductive brush to a housing of the roller charging device and electrically coupling the Y-shaped electrically conductive brush to a power source. A printing fluid developer may include a plurality of rollers and a plurality of Y-shaped brushes to each contact one of the plurality of rollers wherein each of the Y-shaped brushes provides an electrical charge to each of the plurality of rollers.

Y-shaped brushes

In one example, a flow structure for an ink supply in a liquid electrophotographic developer unit includes an elongated basin having a volume that shrinks progressively from an upstream part of the basin to a downstream part of the basin such that a rate of shrinkage increases towards the downstream part.

Flow structure for an ink supply in a liquid electrophotographic developer unit

In one aspect an apparatus for use in an electrographic printer is described. The apparatus includes a housing having a base, a first wall, and a second wall, wherein the housing defines a cavity. The apparatus also includes a developer roller and an ink developer electrode for developing ink to the developer roller. The apparatus also includes an ink outlet, and a gutter for directing ink in the cavity towards the ink outlet, the gutter being disposed between the first wall and second wall, and between the developer roller and base. The gutter has a floor, a first side, and a second side, each extending along a length of the gutter. The floor slopes towards the ink outlet to direct ink towards the ink outlet, and the floor and sides of the gutter form a curve transverse to the length of the gutter to direct ink towards the floor.

Curved ink gutter sloped towards an ink outlet in a wall

A print agent supply unit includes: an inlet chamber to distribute print agent within the print agent supply unit; a valve to selectively permit print agent into the inlet chamber, the valve including: a print agent inlet opening; and a valve member to selectively close the print agent inlet opening, the valve member being tapered towards an upstream end of the valve member.

Print agent supply unit valve

Certain examples of an apparatus, a printing system and a method are described that may be used for applying a fluid. In certain cases, an apparatus has a chamber arranged to receive fluid, the chamber being sealed at one or more ends by one or more respective end seals. In one case, at least one end seal is moveable along an axis of the chamber to adjust at least a volume of the chamber.

Fluid application

Apparatus to apply a fluid to a substrate, the apparatus includes a first roller to rotate about an axis and apply a fluid to a first side of the substrate. The first roller includes an outlet to provide gas to the substrate to guide the movement of the substrate subsequent to the application of fluid to the substrate.

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Ness Ziona, Israel

Ziv Yosef