Electronic printing of non-planar macro and micro devices

Details Electronic printing of non-planar macro and micro devices Electronic printing of non-planar macro and micro devices

1999-06-22

2000-12-12

Hilten, John S.

Printing

Processes

Electric or magnetic transfer

101DIG37, B41M 3530

Patent

active

061583464

ABSTRACT:
A prototyping method and apparatus incorporating the invention enables rapid fabrication of heterogeneous parts with non-planar and/or layer-by-layer printing. An electronically addressable array of micro-electrodes is employed as a "printing" panel, A processor controls the printing panel through use of two dimensional planar slice data. Such slice data is used to address electrodes that correspond to points in the slice image. When the printing panel is brought close to a flat powder bed, a static electrical field at each addressed electrode attracts particles to the electrode's surface. The powder image on the printing panel electrodes is then placed over a substrate and the powder image is released to the substrate by applying a reverse polarity voltage to the electrodes. Multiple applications of powder image layers, with intervening fixing of each image layer, enables a three dimensional object to be rapidly constructed. Chemical/physical compositions can be tailored in each layer by addressing plural sets of signals to electrodes that are placed over different powder beds.

REFERENCES:
patent: 2972304 (1961-02-01), Jarvis
patent: 3306198 (1967-02-01), Rarey
patent: 3585061 (1971-06-01), Allinger et al.
patent: 3640746 (1972-02-01), Haas
patent: 3902421 (1975-09-01), Takahashi
patent: 4106409 (1978-08-01), Kobayashi et al.
patent: 5088047 (1992-02-01), Bynum
patent: 5660486 (1997-08-01), Okuda et al.

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