JPS5667831A - Preparation for screen - Google Patents

Preparation for screen

Info

Publication number
JPS5667831A
JPS5667831A JP14463579A JP14463579A JPS5667831A JP S5667831 A JPS5667831 A JP S5667831A JP 14463579 A JP14463579 A JP 14463579A JP 14463579 A JP14463579 A JP 14463579A JP S5667831 A JPS5667831 A JP S5667831A
Authority
JP
Japan
Prior art keywords
metallic foil
elastic body
pressing
female mold
pressing member
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
Application number
JP14463579A
Other languages
Japanese (ja)
Inventor
Wataru Shimada
Susumu Hoshinouchi
Kenji Kawaguchi
Tokio Hisayoshi
Akio Yoshida
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 JP14463579A priority Critical patent/JPS5667831A/en
Publication of JPS5667831A publication Critical patent/JPS5667831A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a screen which prevents the metallic foil from wrinkles and cracks, by sealing and exhausting air between the female mold having the forming surface which is minutely uneven and the metallic foil, and after that, by pressing and forming the metallic foil through the elastic body having the thick center.
CONSTITUTION: The metallic foil 1 is placed on the female mold 2 so that its mirror surface side is made to oppose the mold, and the sapce between them is airtighltly sealed by pressing its margin by the holding plate 6. Subsequently, after air has been exhausted from the exhaust port 4, formation is performed by pressing said part by use of the pressing member 9. After that, when the pressing member 9 is raised, since the elastic body 7 is formed as a spherical surface having the thick center, pressure is released gradully from the margin of the elastic body 7, and the elasticity is gradually restored to the original state. Accordingly, the large elasticity restoring force does not occur widthwise in the marginal part of the elastic body, as well, and no wrinkle nor crack does not occur in the metallic foil. After that, after the pressing member 9 has been removed, rapid cured resin is applied on the surface of the metallic foil 1, is hardened, and subsequently the metallic foil 1 is separated from the female mold 2 by releasing the vacuum and blowing in air from the exhaust port 4.
COPYRIGHT: (C)1981,JPO&Japio
JP14463579A 1979-11-07 1979-11-07 Preparation for screen Pending JPS5667831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14463579A JPS5667831A (en) 1979-11-07 1979-11-07 Preparation for screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14463579A JPS5667831A (en) 1979-11-07 1979-11-07 Preparation for screen

Publications (1)

Publication Number Publication Date
JPS5667831A true JPS5667831A (en) 1981-06-08

Family

ID=15366633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14463579A Pending JPS5667831A (en) 1979-11-07 1979-11-07 Preparation for screen

Country Status (1)

Country Link
JP (1) JPS5667831A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6154912A (en) * 1984-08-27 1986-03-19 Canon Inc Mold for producing optical element
CN102083336A (en) * 2008-07-07 2011-06-01 苏胤瑞 Length adjustment apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4864145A (en) * 1971-11-29 1973-09-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4864145A (en) * 1971-11-29 1973-09-05

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6154912A (en) * 1984-08-27 1986-03-19 Canon Inc Mold for producing optical element
JPH0479805B2 (en) * 1984-08-27 1992-12-17 Canon Kk
CN102083336A (en) * 2008-07-07 2011-06-01 苏胤瑞 Length adjustment apparatus

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