Screen printing head, system and method
US8371217B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 2007 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Jan 15, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/0126
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A screen printing head which, in a printing operation, is displaceable in a first direction over a surface of a workpiece to print deposits of a print medium on the workpiece, the screen printing head comprising: a print head assembly comprising a print unit comprising a main body including a print medium, cavity, which in use contains print medium, and a delivery aperture, which is in fluid communication with the print medium cavity and through which print medium is in use delivered from the print medium cavity to the surface of the workpiece, and a rotatable unit which is disposed in the print medium cavity of the main body and rotatable to displace print medium as contained in the print medium cavity; and a drive unit for rotating the rotatable unit such as to displace print medium as contained in the print medium cavity, wherein the drive unit is operative to rotate the rotatable unit to apply a force to the print medium at the delivery aperture in the main body in a second direction which is opposite to the first direction of displacement of the screen printing head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.