Ink jet print head
US5666140A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1994 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Apr 18, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/03
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet print head includes: a monolithic silicon substrate having a top surface; a plurality of chamber walls for defining a plurality of ink chambers on the top surface of the silicon substrate, the plurality of ink chambers being aligned in a first direction into a row extending along the top surface of the silicon substrate, each of the plurality of ink chambers being filled with ink, each chamber wall having a nozzle portion for defining a nozzle of a plurality of nozzles, each nozzle portion being formed so that each nozzle is in fluid communication with a respective ink chamber, the plurality of nozzles being aligned in the first direction into a row extending parallel to the top surface of the silicon substrate; an integrated circuit provided on the top surface of the silicon substrate and located adjacent to the plurality of ink chambers for outputting pulsed electric current; and a plurality of thermal resistors provided on the top surface of the silicon substrate each being located in a corresponding ink chamber of the plurality of ink chambers, each of the plurality of thermal resistors including a thin-film resistor. the thin-film resistor being made of a material s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.