Heated tool positioned in the X,Y, and 2-directions for depositi

Details Heated tool positioned in the X,Y, and 2-directions for depositi Heated tool positioned in the X,Y, and 2-directions for depositi

1994-06-17

1999-10-26

Jeffery, John A.

Electric heating

Heating devices

Tool or instrument

228 35, 118 50, 118263, 401 2, 401191, 219221, H01L 2100, B23K 306

Patent

active

059732954

ABSTRACT:
A heated apparatus, positioned in the X, Y, and Z directions, for forming fine lines of molten material on a substrate. The apparatus includes a pen having a refractory tip wetted with material in a molten state. The tip is attached to a V-shaped heater to form a heater assembly. The ends of the V-shaped heater are welded to the pins of a three lead TO-5 package base. The pen is then mounted on an apparatus adapted to direct writing. To that end, the pen is attached to a supporting device capable of moving in the X, Y, and Z directions. When the welding point of the tip/heater assembly reaches the melting point of the material to be deposited, it is dipped in a crucible containing the material in a molten state. The welding point nucleates a minute drop of the molten material, forming a reservoir. A thin film of material flows from the reservoir and wets the tip, which is then brought in contact with the substrate upon which the desired pattern is to be formed.

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J. P. Ibe, et al., "On the electrochemical etching of tips for scanning tunneling microscopy " J. Vac. Sci. Technology, A8 (4), pp. 3570-3575, Jul./Aug. 1990.
Micropen Brochure, "CAD/CAM Orifice Writing System for Thick Film and Other Materials", Micropen Inc., 265 Thornell Rd., Pittsford NY 14534.

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