Guard jets in multiple nozzle printing
US4077040A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 22, 1976 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | Oct 22, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/155
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.