Ink delivery system for an ink-jet pen
US5153612A · kind A · utility
69Cited by
26References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1991 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Jan 3, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17513
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A flexible reservoir bladder is connected to the base of a pen body to define a reservoir volume that permits nearly all of the ink contained therein to be delivered from the pen by a print head. The back pressure developed within the reservoir volume is regulated by the resilient properties of the bladder and an orifice that permits controlled entry of air into the volume as the ink is depleted. The system is able to withstand severe environmental effects, such as a drop in ambient air pressure, while preventing pen leakage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.