Thermal ink jet pen body construction having improved ink storage and feed capability
US4771295A · kind A · utility
541Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1986 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Jul 1, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D15/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The novel pen body construction described herein includes multiple ink storage compartments communicating with a multi-orifice printhead, and these compartments are adapted to receive sections of ink-storage foam. Preferably, this foam is a reticulated polyurethane foam of controlled porosity and capalarity and is especially well suited for storing different ink colors, such as cyan, magenta and yellow. However, single compartment black ink storage is also within the scope of this invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.