Manufacturing method for a thermal head
US8256099B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2009 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Feb 23, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49204
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The manufacturing method for a thermal head includes: forming a hollow concave portion and a marking concave portion having a depth larger than a depth of the hollow concave portion on one surface of a thin plate glass; a bonding step of bonding a supporting plate onto the one surface of the thin plate glass, in which the hollow concave portion and the marking concave portion are formed in the concave portion forming step; a thinning step of thinning the thin plate glass onto which the supporting plate is bonded in the bonding step until the marking concave portion extends through the substrate from a side of a back surface opposite to the one surface; and a heating resistor forming step of forming a heating resistor on the back surface of the thin plate glass thinned in the thinning step so as to be opposed to the hollow concave portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.