JPS57138746A - Shadow mask molding method - Google Patents

Shadow mask molding method

Info

Publication number
JPS57138746A
JPS57138746A JP2425881A JP2425881A JPS57138746A JP S57138746 A JPS57138746 A JP S57138746A JP 2425881 A JP2425881 A JP 2425881A JP 2425881 A JP2425881 A JP 2425881A JP S57138746 A JPS57138746 A JP S57138746A
Authority
JP
Japan
Prior art keywords
masks
shadow
mask
shadow mask
subjected
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
Application number
JP2425881A
Other languages
Japanese (ja)
Other versions
JPH0219575B2 (en
Inventor
Shigeo Takenaka
Eizaburo Hamano
Yasuhisa Otake
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2425881A priority Critical patent/JPS57138746A/en
Publication of JPS57138746A publication Critical patent/JPS57138746A/en
Publication of JPH0219575B2 publication Critical patent/JPH0219575B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes

Abstract

PURPOSE:To form a proper electron beams transit hole by preventing any shift beftween two shadow masks and uneven elongation of said shadow masks at the time of press molding when the shadow masks for a mask converging type color television set are molded. CONSTITUTION:After two sheets of shadow mask electrodes 1 and 2 are superimposed using a position adjusting jig 9 equipped with a guide pin 10 the circumference, surrounding the effective surfaces 11 of the masks are subjected to seam welding 12 or spot welding 13. After the two masks are fixed to each other, they are subjected to press molding using male and female metal molds so as to have desired curvature. In the instance, an electron beam transit hole is previously buried with resin 15, so as to prevent shift of the mask holes due to microscopic elongation. After the curvature was formed as intended, the filled resin is removed, and a part including the welded part other than the effective surface is cut mechanically or using a laser beam to form a shadow mask.
JP2425881A 1981-02-23 1981-02-23 Shadow mask molding method Granted JPS57138746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2425881A JPS57138746A (en) 1981-02-23 1981-02-23 Shadow mask molding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2425881A JPS57138746A (en) 1981-02-23 1981-02-23 Shadow mask molding method

Publications (2)

Publication Number Publication Date
JPS57138746A true JPS57138746A (en) 1982-08-27
JPH0219575B2 JPH0219575B2 (en) 1990-05-02

Family

ID=12133208

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2425881A Granted JPS57138746A (en) 1981-02-23 1981-02-23 Shadow mask molding method

Country Status (1)

Country Link
JP (1) JPS57138746A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4996458A (en) * 1988-06-17 1991-02-26 Mitsubishi Denki Kabushiki Kaisha Shadow mask assembly for color cathode ray tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4996458A (en) * 1988-06-17 1991-02-26 Mitsubishi Denki Kabushiki Kaisha Shadow mask assembly for color cathode ray tube

Also Published As

Publication number Publication date
JPH0219575B2 (en) 1990-05-02

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