Ink jet array
US4891654A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1989 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | Feb 28, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In the representative embodiments of an ink jet array described in the specification, a plurality of ink sources is arranged to provide different inks to selected orifices and a linear array of ink jet orifices is supplied with ink from pressure chambers alternately disposed on opposite sides of the array to permit close spacing of the ink jet orifice and adjacent pairs of orifices in the array receive ink from the same ink source. At the end opposite from the ink jet orifice, each pressure chamber having a compliant wall communicates with a low acoustic impedance chamber to reflect negative pressure pulses from the pressure chamber back through the chamber as positive pulses to reinforce positive pulses applied to the pressure chamber and to prevent pressure pulses from being transmitted to the ink supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.