Method and apparatus for determining drop volume from a drop ejection device
US6513901B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2001 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Sep 28, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/1753
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A device for determining drop volume for a drop ejection device is disclosed. The drop ejection device has a drop ejector and a reference drop ejector that exhibits less drop volume variation than the drop ejector. The drop ejection device includes a sensor responsive to impinging drops for producing a signal proportional to drop volume. The sensor is responsive to drops from the drop ejector to produce an electrical signal. The sensor is responsive to drops from the reference drop ejector to produce a reference electrical signal. Also included is a processing device responsive to the electrical signal and reference electrical signal for determining drop volume of the drop ejector relative to drop volume of the reference drop ejector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.