Reducing ink droplets generated by bursting bubbles in an ink developer
AssigneeHewlett-Packard Development Company, L.P.
InventorsDavid Sabo, Evgeny Korol
Life of this patent
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Abstract
An apparatus for reducing ink droplets generated by bursting bubbles within an ink developer includes a surface directing an ink flow into a channel; and a protrusion within the channel that reduces ink droplets generated by bursting bubbles entrained within the ink flow. An ink developer includes an ink source supplying ink to the ink developer; an electrode which develops a portion of the ink onto a developer roller; and a splash guard which directs an undeveloped ink flow into a channel which has a reduced cross-section area configured to reduce bubbles exiting the channel and bursting.
Claims14
An apparatus for reducing ink droplets comprising:
- a surface directing an ink flow into a channel;
- and
- a protrusion within said channel,
- in which said protrusion comprises a trailing edge to extract bubbles entrained in said ink flow and to break surface tension between said ink flow and said protrusion such that said ink flow adheres to a wall of said channel by surface tension, said ink flow exiting said channel in a laminar flow.
An apparatus for reducing ink droplets generated by bursting bubbles within an ink developer comprising:
- a splash guard configured to direct an ink flow into a channel, said splash guard being mounted to a support, said channel being formed by a space between said splash guard and said support;
- a protrusion extending across a substantial portion of a lower edge of said splash guard, said protrusion creating a reduced cross-section area within said channel and breaking surface tension between an ink flow and said protrusion such that said ink flow adheres to said support by surface tension, said ink flow exiting said channel in a laminar flow.
An ink developer comprising:
- an ink source supplying ink to said ink developer;
- an electrode;
- a developer roller, said electrode being configured to develop a portion of said ink onto said developer roller;
- a splash guard, said splash guard being configured to direct an undeveloped ink flow into a channel located between said electrode and said splash guard, said channel having a reduced cross-section area;
- said reduced cross-section area being configured to reduce bubbles exiting said channel and bursting,
- in which the reduced cross section breaks surface tension between said ink flow and said reduced cross such that said ink flow adheres to the electrode by surface tension, said ink flow exiting said channel in a laminar flow.
An apparatus for extracting bubbles in an ink flow comprising:
- a surface to direct an ink flow into a channel, said channel being formed by a space between said surface and a support;
- and
- a protrusion extending across a substantial portion of a lower edge of said surface, said protrusion creating a reduced cross-section area within said channel,
- in which the protrusion comprises a trailing edge to extract said bubbles in said ink flow and to break surface tension between said ink flow and said protrusion such that said ink flow adheres to said support by surface tension, said ink flow exiting said channel in a laminar flow.
Dependencies are inferred from the claim text.