Ink jet printer drive pulse for elimination of multiple ink droplet ejection
US4369455A · kind A · utility
30Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1980 |
| Grant date | Jan 18, 1983 |
| Priority date | — |
| Expiry date | Dec 8, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/802
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The electrical drive pulse applied to the piezoelectric crystal of an ink jet printer is designed to cause ejection of a single desired ink droplet from the print head and to preclude ejection of unwanted multiple ink droplets. The drive pulse consists of the superposition of two waveforms wherein the first waveform causes ejection of the desired ink droplet and the superimposed second waveform removes energy from the print head so that mechanical ringing of the ink supply within the print head does not cause ejection of unwanted ink droplets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.