Hewlett-packard Development Company, L.p.

Thomas H Ottenheimer

Jeffrey Scott Obert

Joseph R Elliot

Martha A Truninger

Timothy R Emery

Steven David Leith

George Z Radominski

Mike Steed

The described embodiments relate to slotted substrates and methods of making the slotted substrates. One exemplary method patterns a first set of dummy features in a first layer positioned over a first surface of a substrate and patterns a second set of dummy features in a second layer positioned over the first layer. After the method patterns the first set of dummy features and the second set of dummy features, the method further forms a slot in the substrate, at least in part, by allowing an etchant to pass through the first and second sets of dummy features to the first surface.

Methods of making slotted substrates

The described embodiments relate to fluid-ejection devices and methods of forming same. One exemplary embodiment includes a plurality of fluid drop generators and associated electrically conductive paths, and at least one electron beam generation assembly configured to selectively direct at least one electron beam at individual electrically conductive paths sufficiently to cause fluid to be ejected from an associated fluid drop generator.

Fluid-ejection device and methods of forming same

Methods and systems for managing contaminants are described. One exemplary method ejects fluid from multiple ejection chambers of a printing device in a pattern designed primarily to create fluid flow to move a contaminant present in fluid contained in a fluid-feed channel configured to supply fluid to the multiple ejection chambers. Responsive to the ejection, the method moves fluid in the fluid-feed channel sufficiently to move a contaminant in a desired direction within the fluid-feed channel.

Managing contaminants in a fluid-delivery device

Slotted substrates and methods of making

The described embodiments relate to a slotted substrate for use in a fluid ejecting device. One embodiment includes a substrate, and a slot received in the substrate. The slot has a central region and one or more terminal region(s). The central region extends at least in part along a pair of sidewalls. Individual terminal region(s) being defined by a terminal sidewall at least a portion of which extends away from both sidewalls of the central region.

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Philomath, OR, United States of America

Thomas H Ottenheimer