Thermal jet recording apparatus
US4914562A · kind A · utility
215Cited by
10References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1987 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Jun 10, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14387
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal ink jet recording apparatus includes at least a substrate having a gap disposed over an ink reservoir on a base in communication with an ink source. A film circuit of electrodes and heating elements is formed on each substrate. A nozzle plate covering the substrates has a lower step portion and a upper step portion. The upper step portion includes nozzles substantially directly above and corresponding to the plurality of heating elements. Ink which is used for this apparatus includes ionic or non-ionic surface active agents for increasing permeability of the ink on a recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.