Ink jet filament length and stimulation amplitude assessment system
US4638325A · kind A · utility
10Cited by
9References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1985 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Sep 9, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/115
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The length of an ink jet filament as a function of stimulation amplitude is measured in an ink jet printing apparatus by locating a narrow charging electrode near the drop break-off point of the ink jet filament, varying the stimulation amplitude to vary the filament length, and measuring the amount of charge imparted to the ink drops as the filament length is changed. Stimulation amplitude is automatically adjusted by as a function of the measured charge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.