Ink jet printing randomizing droplet placement apparatus
US4575730A · kind A · utility
24Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1984 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Nov 14, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Ink jet printing apparatus is provided for vertically randomizing the flight paths of ink drops ejected from an ink jet printing head to print dots at positions randomly deviated vertically with respect to a line scanned by the printing head. Ejected ink drops are passed through an electric field having a randomly varying intensity and direction to randomly deflect the ink drop flight path with respect to a line scanned by the printing head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.