Guard jets in multiple nozzle printing

Details Guard jets in multiple nozzle printing Guard jets in multiple nozzle printing

1976-10-22

1978-02-28

Hartary, Joseph W.

Recorders

Record receiver deforming

G01D 1518

Patent

active

040770400

ABSTRACT:
In a jet printing system which includes an array of N nozzles, the droplet streams emitted from at least the first and Nth nozzle are continuously guttered, and the droplet streams emitted from the other nozzles are one of selectively guttered or directed to a printing medium. Alternatively, the array may be comprised of N rows and M columns of nozzles. The droplet streams emitted from at least the first and Nth row, through the first through Mth column are permanently guttered, and the droplet streams emitted from the other nozzles are one of selectively guttered or directed to a printing medium. In each instance, the air flow created by the permanently guttered droplet streams reduces the aerodynamic retardation of the other droplet streams, thereby reducing the misregistration of the droplets on the printing medium. In one embodiment, the guttered droplet streams comprise a non-marking liquid such as water, and the other droplet streams comprise a marking liquid such as ink.

REFERENCES:
patent: 3803628 (1974-04-01), Van Brimer
Fisher et al.; Reducing Drop Misregistration . . . In a Linear Ink Jet Array; IBM Tech. Disc. Bulletin, vol. 17, No. 10, Mar. 1975, pp. 3066-3067.

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