Ink-jet printing method and device therefor
US4231047A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1979 |
| Grant date | Oct 28, 1980 |
| Priority date | — |
| Expiry date | May 30, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/025
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A first ultrasonic transducer is normally energized so that the ink jet normally emerging through a nozzle of an ink manifold containing the pressurized ink may break into an ink drop within a charge electrode and the charged ink drop may be deflected by a pair of deflection electrodes so as to travel toward a gutter. In response to the ink-placement signal a second ultrasonic transducer is de-energized when it has been energized in phase or in opposite phase with the first ultrasonic transducer when the second ultrasonic transducer has been de-energized so that the formation of each ink drop may occur outside of the charge electrode and the uncharged ink drop may travel to strike against a recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.