Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1997-09-08
2000-05-16
Yockey, David F.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 22, B41J 206, B41J 2165
Patent
active
060626763
ABSTRACT:
A movable printhead having a screen or lattice-shaped control electrode matrix prints each page as a series of narrow bands across the width of the page. An information carrier such as paper is placed between a back electrode and the control electrode matrix, both of which are connected to voltage sources. Voltage sources connected to the control electrode matrix at least partially open and close passages through the control electrode matrix. Charged pigment particles attracted from a particle carrier through open passages are deposited on the information carrier to form visible images. In one embodiment, a particle carrier is rotated in opposite directions in response to the direction of movement of the printhead. In another embodiment, a cleaning assembly having a magnetic roll and located outside the printing area removes unwanted pigment particles from the control electrode matrix. In another embodiment, two stationary belts, a tooth wheel, a mechanical angle link, a rotary belt, and two single-direction wheels are arranged to rotate a particle carrier in a same direction regardless of the direction the printhead is moved.
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Array Printers AB
Yockey David F.
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