Ion projection print head

Details Ion projection print head Ion projection print head

1988-12-27

1989-10-17

Evans, Arthur G.

Recorders

Electric recording

Electrochemical

3461531, G01D 1500

Patent

active

048750620

ABSTRACT:
An ion projection print head for applying ions line-by-line from a substantially uniform linear ion source, in a modulated pattern to a moving ion receptor substrate to form a latent image charge pattern on such substrate corresponding to information to be reproduced. The ion projection print head comprises a substantially planar mask having an elongated slot defined therethrough, the slot being oriented in a longitudinal direction substantially parallel to an element of the ion receptor substrate transverse to the direction of movement of such substrate. A continuous electrode is formed on the side of the mask between the mask and the ion source, and a plurality of electrodes are formed on the side of the mask opposite from the continuous electrode. The plurality of electrodes are spaced apart in insulating relationship from one another and terminate at the slot. An electrical bias is selectively applied to the plurality of electrodes respectively to modulate ion flow through the slot from the ion source to the receptor substrate.

REFERENCES:
patent: 3594162 (1971-07-01), Simm et al.
patent: 4016813 (1977-04-01), Pressman et al.
patent: 4155093 (1979-05-01), Fotland et al.
patent: 4338614 (1982-07-01), Pressman et al.
patent: 4463363 (1984-07-01), Gundlach et al.
patent: 4491855 (1985-01-01), Fujii et al.
patent: 4568955 (1986-02-01), Hosaya et al.
patent: 4593994 (1986-06-01), Tamura et al.
patent: 4675703 (1987-06-01), Fotland

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