JPS5449061A - Manufacture of pattern for graded shadow mask - Google Patents
Manufacture of pattern for graded shadow maskInfo
- Publication number
- JPS5449061A JPS5449061A JP11511577A JP11511577A JPS5449061A JP S5449061 A JPS5449061 A JP S5449061A JP 11511577 A JP11511577 A JP 11511577A JP 11511577 A JP11511577 A JP 11511577A JP S5449061 A JPS5449061 A JP S5449061A
- Authority
- JP
- Japan
- Prior art keywords
- film
- lamp house
- shielding plate
- plate
- pattern
- 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
Links
Landscapes
- Preparing Plates And Mask In Photomechanical Process (AREA)
Abstract
PURPOSE: To form a desired grade on a film by arranging a shielding plate with a circular aperture in its center between a light source and film provided with a net- positive pattern plate, and by moving forward and backward this shielding plate to control the quantity of light transmitting through the circular aperture.
CONSTITUTION: Inside lamp house 21, lamp 23, condenser lens 24 and milk-white diffusing plate 25 are arranged, and between this lamp house 21 and film 29 provided with net-positive pattern plate 28, stop 26 and shielding plate 27 with a circular aperture are arranged. This shielding pate 27 is able to move forawrd and backward between film 29 and lamp house 21 by movement unit 30. In this constitution, when film 29 is irradiated with light from lamp house 21, shielding plate 27 is made away from film 29 toward lamp house 21, so that a pattern with a grade will be generated on film 29. Further, changing the shape of the aperture provided to shielding plate 27 makes it possible to provide the grading of a dot size
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52115115A JPS6042581B2 (en) | 1977-09-27 | 1977-09-27 | How to make a pattern for a graded type shadow mask |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52115115A JPS6042581B2 (en) | 1977-09-27 | 1977-09-27 | How to make a pattern for a graded type shadow mask |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5449061A true JPS5449061A (en) | 1979-04-18 |
JPS6042581B2 JPS6042581B2 (en) | 1985-09-24 |
Family
ID=14654604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52115115A Expired JPS6042581B2 (en) | 1977-09-27 | 1977-09-27 | How to make a pattern for a graded type shadow mask |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6042581B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60163333A (en) * | 1984-02-02 | 1985-08-26 | Toppan Printing Co Ltd | Manufacture of pattern for graded type shadow mask |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS633306A (en) * | 1986-06-23 | 1988-01-08 | Mitsubishi Electric Corp | Numerical controller |
-
1977
- 1977-09-27 JP JP52115115A patent/JPS6042581B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60163333A (en) * | 1984-02-02 | 1985-08-26 | Toppan Printing Co Ltd | Manufacture of pattern for graded type shadow mask |
JPH0460293B2 (en) * | 1984-02-02 | 1992-09-25 | Toppan Printing Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6042581B2 (en) | 1985-09-24 |
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