System for etching patterns of small openings on a continuous strip of metal
US4124437A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1976 |
| Grant date | Nov 7, 1978 |
| Priority date | — |
| Expiry date | Apr 5, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2209/015
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An etching system having a first member for unrolling and fastening a protective film on one side of a continuous strip of metal and a second member for smoothly stripping the protective film from the continuous strip of metal after the continuous strip of metal and the protective film have passed between sets of spray jets that are located on opposite sides of the continuous strip of metal. Further etching and rinsing stations are provided for completing the etching process to enable mass production of television aperture masks having a plurality of openings which have a dimension on the order of or less than the thickness of the mask material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.