JPS573341A - Shadow mask - Google Patents

Shadow mask

Info

Publication number
JPS573341A
JPS573341A JP7706280A JP7706280A JPS573341A JP S573341 A JPS573341 A JP S573341A JP 7706280 A JP7706280 A JP 7706280A JP 7706280 A JP7706280 A JP 7706280A JP S573341 A JPS573341 A JP S573341A
Authority
JP
Japan
Prior art keywords
frame
reducing atmosphere
minutes
heat
temperature
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
JP7706280A
Other languages
Japanese (ja)
Other versions
JPS5951703B2 (en
Inventor
Toshiaki Fukunishi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7706280A priority Critical patent/JPS5951703B2/en
Publication of JPS573341A publication Critical patent/JPS573341A/en
Publication of JPS5951703B2 publication Critical patent/JPS5951703B2/en
Expired 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/07—Shadow masks
    • H01J2229/0722—Frame

Abstract

PURPOSE:To improve the bond strength and to obtain a frame with excellent characteristics by heat-treating the frame in a furnace with a reducing atmosphere under a specific condition before blacking. CONSTITUTION:A hot or cold rolled steel with thickness of 1.6 to 2.0mm. is press- molded to form a rectangular frame. The frame is washed with an organic solvent to remove press-oil and dusts on it. The frame is then heat-treated at a temperature of 500 deg.C or more for three minutes or more in a reducing atmosphere, preferably at a temperature of 550 to 850 deg.C for five minutes or more in a reducing atmosphere. The bond strength of a blacking film which is formed on a frame pretreated is improved.
JP7706280A 1980-06-05 1980-06-05 Method for forming blackened film on frame for shadow mask Expired JPS5951703B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7706280A JPS5951703B2 (en) 1980-06-05 1980-06-05 Method for forming blackened film on frame for shadow mask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7706280A JPS5951703B2 (en) 1980-06-05 1980-06-05 Method for forming blackened film on frame for shadow mask

Publications (2)

Publication Number Publication Date
JPS573341A true JPS573341A (en) 1982-01-08
JPS5951703B2 JPS5951703B2 (en) 1984-12-15

Family

ID=13623299

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7706280A Expired JPS5951703B2 (en) 1980-06-05 1980-06-05 Method for forming blackened film on frame for shadow mask

Country Status (1)

Country Link
JP (1) JPS5951703B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5940444A (en) * 1982-08-31 1984-03-06 Toshiba Corp Color picture tube and manufacture thereof
US4746315A (en) * 1985-06-27 1988-05-24 Sony Corporation Production of color selection mechanism for cathode-ray tube
US5026312A (en) * 1986-01-23 1991-06-25 U.S. Philips Corporation Method of manufacturing a shadow mask, shadow mask manufactured according to such a method, and color display tube comprising such a shadow mask
US5509842A (en) * 1995-06-26 1996-04-23 Rca Thomson Licensing Corp. Method for pre-stressing CRT tension mask material
KR100391911B1 (en) * 1999-12-20 2003-07-16 주식회사 포스코 A method for manufacturing shadow mask

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5940444A (en) * 1982-08-31 1984-03-06 Toshiba Corp Color picture tube and manufacture thereof
JPH0414457B2 (en) * 1982-08-31 1992-03-12 Tokyo Shibaura Electric Co
US4746315A (en) * 1985-06-27 1988-05-24 Sony Corporation Production of color selection mechanism for cathode-ray tube
US5026312A (en) * 1986-01-23 1991-06-25 U.S. Philips Corporation Method of manufacturing a shadow mask, shadow mask manufactured according to such a method, and color display tube comprising such a shadow mask
US5509842A (en) * 1995-06-26 1996-04-23 Rca Thomson Licensing Corp. Method for pre-stressing CRT tension mask material
KR100391911B1 (en) * 1999-12-20 2003-07-16 주식회사 포스코 A method for manufacturing shadow mask

Also Published As

Publication number Publication date
JPS5951703B2 (en) 1984-12-15

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