Guard jets in multiple nozzle printing

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

G - Physics

01

D

222/1, 101/96.02

G01D 15/16 (2006.01) B41J 2/12 (2006.01) B41J 2/155 (2006.01)

Patent

CA 1059199

METHOD AND APPARATUS FOR REDUCING AERODYNAMIC RETARDATION OF DROPLET STREAMS IN A JET PRINTING SYSTEM Abstract of the Disclosure 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 selec- tively 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, and the first through Mth column are continuously 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 continuously guttered droplet streams reduces the aeorodynamic 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.

254706

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