Fabrication process for acoustic lens array for use in ink printing
US6200491A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1999 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Mar 23, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/14008
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An acoustic lens array fabrication process includes the formation of a microlens array mold stamper through the melting of a photoresist resin deposited on formed pedestals of a substrate. Heating of the resin causes formation of semi-spherical photoresist mounds. A further processing step, such as reactive ion etching, is used to transfer the geometry of the photoresist mounds to the substrate material, thereby forming a microlens mold stamper with convex mounds. The microlens mold stamper is then pressed into an upper surface of a acoustic ink print head substrate heated to a predetermined temperature, allowing the convex mounds to form concave impressions in the acoustic ink print head substrate, thereby forming the microlens array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.