JPS5660291A - Marking method by high-frequency current - Google Patents

Marking method by high-frequency current

Info

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
Application number
JP13660379A
Other languages
Japanese (ja)
Inventor
Miki Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shinko Electric Co Ltd
Original Assignee
Shinko Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shinko Electric Co Ltd filed Critical Shinko Electric Co Ltd
Priority to JP13660379A priority Critical patent/JPS5660291A/en
Publication of JPS5660291A publication Critical patent/JPS5660291A/en
Pending legal-status Critical Current

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
JP13660379A 1979-10-23 1979-10-23 Marking method by high-frequency current Pending JPS5660291A (en)

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)

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