Apparatus and method for ink droplet ejection for a printer
AssigneeSiemens Aktiengesellschaft
InventorJoachim Heinzl
Life of this patent
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Abstract
A drive arrangement for generating droplets in an ink jet printer incorporates an ink channel with a plurality of discharge openings, and a plurality of conductor loops having their ends secured on both sides of an ink channel, such loops having V-shaped movable central parts located within the ink channel. A magnet system extending over the entire length of the channel generates a magnetic field in the region of the central parts of the drive elements. Each drive element is forced toward its discharge opening by changing the current through the conductor loops, causing an ejection of a droplet from its associated discharge opening.
Claims8
Apparatus for generating individual ink droplets in an ink jet printer having individually drivable discharge elements for ejecting droplets from discharge openings associated therewith and which communicate with an ink jet chamber comprising, in combination;,
- a common ink channel for a series of discharge elements, a plurality of conductive drive elements, one for each of said discharge openings, said drive elements each being secured at both sides of the ink channel and having a movable central part within said ink channel, said central part being associated with an individual discharge opening, a magnet system for generating a magnetic field penetrating at least the movable central parts of all drive elements, such that said central part is caused to move in the direction toward the ejection opening in response to a change in current flow through said element.
Dependencies are inferred from the claim text.