JPS6442547A - Shadow mask and its production - Google Patents
Shadow mask and its productionInfo
- Publication number
- JPS6442547A JPS6442547A JP19624287A JP19624287A JPS6442547A JP S6442547 A JPS6442547 A JP S6442547A JP 19624287 A JP19624287 A JP 19624287A JP 19624287 A JP19624287 A JP 19624287A JP S6442547 A JPS6442547 A JP S6442547A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- shadow mask
- mask
- etching
- strength
- 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
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
PURPOSE:To produce the title high-precision shadow mask having high strength by cold-rolling an alloy having a specified composition consisting of Ni, Mo, Cu, C, Mn, Si, and Fe into an ultrathin sheet, pitting the sheet by etching, imparting a tension to the sheet, and then fixing the sheet. CONSTITUTION:An Ni-Fe based alloy consisting, by weight, of 60-90% Ni, 1-8% Mo, 1-8% Cu, <=0.1% C, 0.1-3.0% Mn, 0.01-1.0% Si, and the balance Fe and inevitable impurities is used as the material for the shadow mask. The material is cold-rolled into a sheet having <=50mum thickness. The ultrathin sheet is annealed, and then slitted to have a prescribed width to obtain a shadow mask material. A resist is applied on the shadow mask material to pit the sheet by etching. The obtained flat mask is heat-treated to improve the strength and magnetism, a tension is imparted to the mask, and the mask is fixed to a frame. The shadow mask is graphitized under such conditions, and then incorporated into a cathode-ray tube. By this method, high precision can be imparted to the shadow mask by using the material having excellent yield strength, magnetism, etching property, and workability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19624287A JPS6442547A (en) | 1987-08-07 | 1987-08-07 | Shadow mask and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19624287A JPS6442547A (en) | 1987-08-07 | 1987-08-07 | Shadow mask and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6442547A true JPS6442547A (en) | 1989-02-14 |
Family
ID=16354557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19624287A Pending JPS6442547A (en) | 1987-08-07 | 1987-08-07 | Shadow mask and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6442547A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008099812A1 (en) * | 2007-02-13 | 2008-08-21 | Hitachi Metals, Ltd. | Magnetic shielding material, magnetic shielding component, and magnetic shielding room |
-
1987
- 1987-08-07 JP JP19624287A patent/JPS6442547A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008099812A1 (en) * | 2007-02-13 | 2008-08-21 | Hitachi Metals, Ltd. | Magnetic shielding material, magnetic shielding component, and magnetic shielding room |
| US8157929B2 (en) | 2007-02-13 | 2012-04-17 | Hitachi Metals, Ltd. | Magnetic shielding material, magnetic shielding component, and magnetic shielding room |
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