Method and apparatus for controlling jet dispensing by displacement measurement
US10933436B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 2017 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Jul 14, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B12/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for jetting a viscous medium onto a substrate is disclosed. The method includes providing viscous medium to a jetting chamber of an ejector, operating an impacting device to impact a volume of the viscous medium in the chamber such that viscous medium is jetted through a nozzle, connected to the chamber, towards the substrate, and monitoring a displacement of the impacting device during impact. An ejector and a system comprising such an ejector and a control unit is also disclosed. The monitoring of the displacement allows for the operation of the impacting device to be controlled accordingly, thereby providing for an improved control of the jetting process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.