JPS5494347A - Thin film type thermal head - Google Patents
Thin film type thermal headInfo
- Publication number
- JPS5494347A JPS5494347A JP126778A JP126778A JPS5494347A JP S5494347 A JPS5494347 A JP S5494347A JP 126778 A JP126778 A JP 126778A JP 126778 A JP126778 A JP 126778A JP S5494347 A JPS5494347 A JP S5494347A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- resistant layer
- electrodes
- abrasion resistant
- thermal expansion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Electronic Switches (AREA)
- Non-Adjustable Resistors (AREA)
- Conductive Materials (AREA)
Abstract
PURPOSE: To improve workability at the forming of abrasion resistant layer, heat resistance and adhesiveness between thin films by using a Fe-Ni alloy for electrode material.
CONSTITUTION: Electrodes 3 formed by way of a heating resistor 2 composed of heat-resistant material such as Ni-Cr alloy or other on an alumina substrate 1 is formed of a Fe-Ni alloy whose coefficient of thermal expansion changes with compositions. As a result, the hardness of the Fe-Ni alloy is more than 3 times that of Au, hence the thickness of the abrasion resistant layer 4 formed thereon may be made thinner and this improves the workability at the forming of the abrasion resistant layer 4. In addition the Fe-Ni alloy temperature is above 960°C and therefore the temperature at the making of the electrodes 3 may be increased and the temperature at the making of the abrasion resistant layer 4 may be increased, thus stable heat resistance may be obtained. Further, the coefficients of thermal expansion of the heating resistor 2 and abrasion-resistant layer 4 may be matched by controlling the coefficients of thermal expansion in their thickness direction by changing the compositions of the electrodes 3 and therefore thermal distortion is minimized and the adhesiveness between the thin films is assured.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP126778A JPS5494347A (en) | 1978-01-09 | 1978-01-09 | Thin film type thermal head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP126778A JPS5494347A (en) | 1978-01-09 | 1978-01-09 | Thin film type thermal head |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5494347A true JPS5494347A (en) | 1979-07-26 |
JPS5652752B2 JPS5652752B2 (en) | 1981-12-14 |
Family
ID=11496673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP126778A Granted JPS5494347A (en) | 1978-01-09 | 1978-01-09 | Thin film type thermal head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5494347A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62158063A (en) * | 1986-01-07 | 1987-07-14 | Alps Electric Co Ltd | Thermal head |
-
1978
- 1978-01-09 JP JP126778A patent/JPS5494347A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62158063A (en) * | 1986-01-07 | 1987-07-14 | Alps Electric Co Ltd | Thermal head |
Also Published As
Publication number | Publication date |
---|---|
JPS5652752B2 (en) | 1981-12-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS56130374A (en) | Thermal head | |
JPS5494347A (en) | Thin film type thermal head | |
JPS5522956A (en) | Heat sensitive head | |
JPS57140876A (en) | Heat resistant ceramic coating | |
JPS5573575A (en) | Thick film type thermal head | |
JPS56111680A (en) | Thermal head | |
JPS5356042A (en) | Thermal head | |
JPS5417853A (en) | Manufacture of integrated thermal heads | |
JPS5774177A (en) | Thin film thermal head | |
JPS62201264A (en) | Membrane type thermal head | |
JPS5463295A (en) | Thermal head | |
JPS5739976A (en) | Thermal head | |
JPS62202753A (en) | Thin film type thermal head | |
JPS62202756A (en) | Thin film type thermal head | |
JPS578176A (en) | High speed thermal printer head | |
JPS54128746A (en) | Production of thin film type thermal head | |
JPS55117934A (en) | Thermosensitive element | |
JPS5387242A (en) | Thin film type thermal heads | |
JPS5485734A (en) | Thin film type thermal head | |
JPS5463293A (en) | Thermal head | |
JPS57152968A (en) | Manufacture of thermal head | |
JPS5720374A (en) | Method of forming crossover in thermal head | |
JPS54125044A (en) | Thin film type thermal head | |
JPS5789980A (en) | Thermal head | |
JPS5532672A (en) | Thin film type thermal head |