Minimization of missing droplets in a thermal ink jet printer by drop volume control
US5483265A · kind A · utility
23Cited by
13References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1994 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Jan 3, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04593
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal ink jet printhead is controlled to minimize missing droplets at elevated operating temperatures by varying the voltage and pulse width applied to the heater element that causes droplets to be formed and ejected. Increasing the applied voltage reduces the size of the formed droplets. At increased operating temperatures, smaller droplets minimize the introduction of air into the nozzles of the printhead upon ejection. Minimizing the introduction of air eliminates printhead misfirings and causes more consistent jetting of the ink droplets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.