JPS5449061A - Manufacture of pattern for graded shadow mask - Google Patents

Manufacture of pattern for graded shadow mask

Info

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
Application number
JP11511577A
Other languages
Japanese (ja)
Other versions
JPS6042581B2 (en
Inventor
Kadode Okumura
Tokuo Ubukata
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 JP52115115A priority Critical patent/JPS6042581B2/en
Publication of JPS5449061A publication Critical patent/JPS5449061A/en
Publication of JPS6042581B2 publication Critical patent/JPS6042581B2/en
Expired legal-status Critical Current

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
JP52115115A 1977-09-27 1977-09-27 How to make a pattern for a graded type shadow mask Expired JPS6042581B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS633306A (en) * 1986-06-23 1988-01-08 Mitsubishi Electric Corp Numerical controller

Cited By (2)

* Cited by examiner, † Cited by third party
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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