Directivity detection device of trajectories of drops issuing from liquid jet, associated electrostatic sensor, print head and continuous ink jet printer
US9044941B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 28, 2014 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Jul 28, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/125
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A directivity detection device for detection of trajectories of electrically charged drops issuing from a liquid jet is provided. The device includes an electrostatic sensor and a signal processing unit. The electrostatic sensor has a flat functional surface having a precise geometric shape and arrangement relative to a nominal trajectory of drops, and the signal processing unit evaluates the signal from the electrostatic sensor and performs calculations and comparisons which enable the trajectory of the drops to be followed both in the plane parallel to the flat surface of the sensor and in the plane perpendicular to the flat surface of the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.