JPS5320962A - Cover glass for wristwatch - Google Patents

Cover glass for wristwatch

Info

Publication number
JPS5320962A
JPS5320962A JP9567076A JP9567076A JPS5320962A JP S5320962 A JPS5320962 A JP S5320962A JP 9567076 A JP9567076 A JP 9567076A JP 9567076 A JP9567076 A JP 9567076A JP S5320962 A JPS5320962 A JP S5320962A
Authority
JP
Japan
Prior art keywords
wristwatch
cover glass
crosslinking density
hygroscopic
resin
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
JP9567076A
Other languages
Japanese (ja)
Other versions
JPS602261B2 (en
Inventor
Makoto Hirano
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP9567076A priority Critical patent/JPS602261B2/en
Publication of JPS5320962A publication Critical patent/JPS5320962A/en
Publication of JPS602261B2 publication Critical patent/JPS602261B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Surface Treatment Of Glass (AREA)

Abstract

PURPOSE: The surface hardness of resin is markedly improved without impairing the anti-fogging performance of conventional hygroscopic resins by providing a gradient to the crosslinking density toward the inside of a hydrophylic hygroscopic resin layer and increasing crosslinking density of the surface.
COPYRIGHT: (C)1978,JPO&Japio
JP9567076A 1976-08-11 1976-08-11 cover glass for watches Expired JPS602261B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9567076A JPS602261B2 (en) 1976-08-11 1976-08-11 cover glass for watches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9567076A JPS602261B2 (en) 1976-08-11 1976-08-11 cover glass for watches

Publications (2)

Publication Number Publication Date
JPS5320962A true JPS5320962A (en) 1978-02-25
JPS602261B2 JPS602261B2 (en) 1985-01-21

Family

ID=14143923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9567076A Expired JPS602261B2 (en) 1976-08-11 1976-08-11 cover glass for watches

Country Status (1)

Country Link
JP (1) JPS602261B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7007963B2 (en) 2018-03-16 2022-01-25 Hoya株式会社 Light irradiation device

Also Published As

Publication number Publication date
JPS602261B2 (en) 1985-01-21

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