Printing system with self-purge, sediment prevention and fumes removal arrangements
US8770714B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2011 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | May 2, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/16558
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printing head assembly with integrated purge mechanism is disclosed. The printing head assembly comprises: (a) a liquid dispensing head comprising one or more dispensing nozzles enclosed in a nozzle plate, driven by at least first and second pressures, and (b) a shielding mask including an opening in front of the one or more nozzles, wherein the opening being configured such that when printing liquid is dispensed from the head driven by the first pressure, the liquid being dispensed in pulses through the opening in the shielding mask, and (ii) when purge printing liquid is dispensed from the head driven by the second pressure the liquid being drawn to a capillary gap formed between the shielding mask and the nozzle plate thereby removing the purge printing liquid from the nearby nozzles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.