Continuous ink jet printer having improved system for reducing pressure variations
US4837585A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1988 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Apr 25, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/175
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improved damping system for continuous ink jet printers of the kind having: (i) a print head, including an ink cavity and an orifice plate coupled to the cavity, and (ii) an ink circulation system having an ink supply conduit to the print head cavity inlet and an ink return conduit coupled to the cavity outlet. The damping system reduces ink pressure transients within said print head means and includes: (i) a damping chamber for enclosing a gas-over-ink region that is coupled to the ink return conduit at a location proximate the print head and (ii) a printer subsystem for periodically introducing gas into said ink return conduit upstream of the damper chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.