US4096510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal printing head
Assignee: Panasonic Holdings Corp
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Filing: 1977-08-03
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Granted: 1978-06-20
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Expires: 1997-08-03
Abstract
Abstract A semiconducting silicon device includes a semiconductor silicon substrate having a diffused layer and a silicon oxide film, a multi-layered electrode provided on the silicon oxide film and in contact with the diffused layer. The multi-layered electrode comprises Ti or Mo as first layer of electrode material and Ni as a second layer.
Inventors
- 👤 Shoji Arai
- 👤 Shige Kuninobu
- 👤 Sumio Maekawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/315; B41J2/32; B41J2/335; B41J2/33505; B41J2/3351; B41J2/33515; B41J2/33525; B41J2/3353; B41J2/33535; B41J2/3355; B41J2/33555; B41J2/33565; H; H10; H10W; H10W20/00; H10W20/40; H10W20/41; H10W20/44; H10W20/4451
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
175 words
A thermal printing head comprising: a semiconductor silicon substrate; a low resistance heating layer formed by diffusion on a portion of the surface of said substrate; a silicon oxide film formed on the surface of said substrate, including said portion having said heating layer formed thereon; a polycrystalline silicon layer covering said silicon oxide film; a wear resistant layer formed of silicon carbide provided on a first portion of said silicon layer having therebeneath a first portion of said heating layer; and a multilayered electrode provided on a second portion of said silicon layer, said electrode having a contact part extending through said silicon layer and said silicon oxide film into contact with a second portion of said heating layer, said electrode comprising a first layer formed of Mo or Ti in contact with said silicon layer, a second layer formed of Ni in contact with said first layer, and a third layer in contact with said second layer and formed of a material selected from the group consisting of Cu, Pt, Pd and Rh.
Claim 2
Dependent Claim
175 words
A thermal printing head comprising: a semiconductor silicon substrate; a low resistance heating layer formed by diffusion on a portion of the surface of said substrate; a silicon oxide film formed on the surface of said substrate, including said portion having said heating layer formed thereon; a polycrystalline silicon layer covering said silicon oxide film; a wear resistant layer formed of silicon carbide provided on a first portion of said silicon layer having therebeneath a first portion of said heating layer; and a multilayered electrode provided on a second portion of said silicon layer, said electrode having a contact part extending through said silicon layer and said silicon oxide film into contact with a second portion of said heating layer, said electrode comprising a first layer formed of Mo or Ti in contact with said silicon layer, a second layer formed of Ni in contact with said first layer, and a third layer in contact with said second layer and formed of a material selected from the group consisting of Cu, Pt, Pd and Rh.
Claim 3
Dependent Claim
29 words
A thermal printing head as claimed in claim 1, further comprising a metal electrode plate attached to said third layer and said electrode by means of a solder layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |