Overflow prevention for liquid between flexible layers on a soli

Details Overflow prevention for liquid between flexible layers on a soli Overflow prevention for liquid between flexible layers on a soli

1974-04-30

1976-05-18

Klein, David

Gas separation: apparatus

Magnetic separating means

355 3P, 204181, 118637, 118638, G03G 1704

Patent

active

039575101

ABSTRACT:
Method and apparatus for preventing the overflow of liquid from between flexible layers on a solid surface. A groove is provided in the solid surface at a location not beyond the edge of at least the bottom flexible layer and preferably not beyond the edge of both flexible layers, to reduce, at the groove, the mechanical pressure (and optionally electrical pressure) forcing the flexible layers together to permit a liquid bead to form at layer portions adjacent the groove instead of having the liquid squeezed out and off the edge of both flexible layers.
In a preferred embodiment, this system is used in photoelectrophoretic imaging using photoelectrophoretic suspension between webs having an electrical field thereacross, on a grooved curved surface, preferably a roller. The suspension is prevented from dripping out the edges of the webs which, inter alia, prevents the ink from seeping back along the web/roller interface which may adversely effect imaging.

REFERENCES:
patent: 2686716 (1954-08-01), Land
patent: 3647441 (1972-03-01), Bachelder
patent: 3652281 (1972-03-01), Bachelder et al.
patent: 3702289 (1972-11-01), Egnaczak
patent: 3764332 (1973-10-01), Harvey
patent: 3830199 (1974-08-01), Saito et al.

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