JPS5660291A - Marking method by high-frequency current - Google Patents
Marking method by high-frequency currentInfo
- Publication number
- JPS5660291A JPS5660291A JP13660379A JP13660379A JPS5660291A JP S5660291 A JPS5660291 A JP S5660291A JP 13660379 A JP13660379 A JP 13660379A JP 13660379 A JP13660379 A JP 13660379A JP S5660291 A JPS5660291 A JP S5660291A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- marking
- frequency current
- color
- symbols
- 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.)
- Pending
Links
Abstract
PURPOSE: To mark characters, symbols and the like on a metal material such as a steel plate by heating the coating and changing the color thereof by means of the high-frequency current.
CONSTITUTION: A circular coil is grouped so that plural kinds of symbols can be marked by one marking head. In addition, a number of circular coils 11 for heating are arranged on the coil insulated body 10 of the marking heat 9 and each of the these coils is controlled by a control device 12. When a switch 5 is closed and the high-frequency current is sent form a high-frequency power source 6 to a coil 4, the thermal districution by the coil 4 becomes as shown by 7. Therefore, only the part in the vicinity of the coil heated to cause the change in color of the coating, whereby the marking can be performed. Moreover, when the marking head is arranged with some curvature, the marking can be applied also to a cylindrical material or materials of alien form.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13660379A JPS5660291A (en) | 1979-10-23 | 1979-10-23 | Marking method by high-frequency current |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13660379A JPS5660291A (en) | 1979-10-23 | 1979-10-23 | Marking method by high-frequency current |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5660291A true JPS5660291A (en) | 1981-05-25 |
Family
ID=15179151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13660379A Pending JPS5660291A (en) | 1979-10-23 | 1979-10-23 | Marking method by high-frequency current |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5660291A (en) |
-
1979
- 1979-10-23 JP JP13660379A patent/JPS5660291A/en active Pending
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