发明名称 |
Stretched mask for colour picture tube and material for the mask |
摘要 |
A stretched mask having a high tensile strength and favorable high-temperature creep properties and free from tape twist, and a material for the stretched mask. A low-carbon steel sheet containing 70 ppm to 170 ppm of nitrogen on a weight basis is heat-treated at a temperature at which recrystallization does not take place. The heat-treated material is provided with a resist pattern for forming apertures and subjected to etching to form apertures. |
申请公布号 |
GB2334140(B) |
申请公布日期 |
2002.10.09 |
申请号 |
GB19990002675 |
申请日期 |
1999.02.05 |
申请人 |
* DAI NIPPON PRINTING CO. LTD |
发明人 |
AKIRA * MAKITA;YUTAKA * MATSUMOTO;TAIZO * SATO;YOSHIKAZU * WATANABE |
分类号 |
C21D9/46;C21D1/26;C22C38/00;C22C38/04;C23F1/00;H01J9/14;H01J29/07;(IPC1-7):H01J29/07 |
主分类号 |
C21D9/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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