Method and device for measuring the viscosity of a fluid
US4905503A · kind A · utility
10Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 15, 1989 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Feb 15, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/32
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for measuring the viscosity of a fluid is shown which can be used to continuously measure the viscosity of the ink used in an ink jet printer. The pressure between two restrictors which respond differently to a change in viscosity is related to the total pressure drop across both restrictors to provide an indication of the change in viscosity of the fluid being dispensed by the printer. By utilizing this information, the viscosity of the ink can be modified to maintain the viscosity within the desired range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.