Ink supply system
US4183031A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1977 |
| Grant date | Jan 8, 1980 |
| Priority date | — |
| Expiry date | Jun 16, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D15/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink supply connection to both an interchangeable print head and the ink supply container of an ink jet printer system of the asynchronous, volume displacement droplet ejection type, the ink supply including means for automatically closing off the ink supply line to prevent either the loss of ink or the introduction of air into the container, supply and print head when either the print head or the container is removed from the system. The print head includes an ink supply pressure sensor for sensing the changes in pressure in the system and a valve operated by the sensor to supply ink to the system upon reduction of the pressure below a predetermined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.