Method of manufacturing an ink jet head
US4685185A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1986 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Aug 29, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49995
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An aperture plate for an ink jet head is formed by micro electrical discharge machining one surface of the plate to form a dimple-like recess with a relatively wide flat base. An aperture is then formed through the plate in the region of the dimple, as by micro electrical discharge machining. In one method of the invention, recesses are formed in two plates which are then mounted to the body of an ink jet head. A third plate with a formed third aperture is then mounted to the body such that the first, second and third plates overly one another and the third aperture is aligned with the recesses. Apertures of a smaller cross-section than the third aperture are then formed in the first two plates by drilling through the third aperture. The aperture through the first plate is then enlarged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.