JPS5557933A - Manufacture of keyboard for electronic desk-top calculator - Google Patents

Manufacture of keyboard for electronic desk-top calculator

Info

Publication number
JPS5557933A
JPS5557933A JP13194578A JP13194578A JPS5557933A JP S5557933 A JPS5557933 A JP S5557933A JP 13194578 A JP13194578 A JP 13194578A JP 13194578 A JP13194578 A JP 13194578A JP S5557933 A JPS5557933 A JP S5557933A
Authority
JP
Japan
Prior art keywords
fixed
keyboard
printed
substrate film
insulation
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
JP13194578A
Other languages
Japanese (ja)
Other versions
JPS641885B2 (en
Inventor
Tadaaki Isono
Hiroshi Shiba
Katsuhiro Murata
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.)
Nippon Graphite Industries Ltd
Original Assignee
Nippon Graphite Industries 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 Nippon Graphite Industries Ltd filed Critical Nippon Graphite Industries Ltd
Priority to JP13194578A priority Critical patent/JPS5557933A/en
Publication of JPS5557933A publication Critical patent/JPS5557933A/en
Publication of JPS641885B2 publication Critical patent/JPS641885B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacture Of Switches (AREA)
  • Push-Button Switches (AREA)
  • Calculators And Similar Devices (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

PURPOSE: To obtain a durable keyboard for a thin electronic desk-top calculator by displaying information on a surface insulating substrate film by making and breaking contacts of a printed circuit substrate by depressing and releasing through openings of an intermediate insulation part.
CONSTITUTION: On the reverse of transparent flexible insulation substrate film 1, mirror-image symmetric pattern 3 of desired display of a keyboard for an electronic desk-top calculator is printed by opaque coloring insulation coating to a fixed thickness, and suspension coating, obtained by mixing and dissolving conductive corpuscles of fixed materials of fixed grain size, a rubber-based and thermoplastic resin- based binder of fixed materials, and a solvent of fixed materials to a fixed weight rate, is printed in circular conductivelayer area 5 surrounding respective elements of pattern 3 to a thickness of 25W50μ to form keyboard insulation substrate film 6. Next, flexible intermediate substrate film 6 is formed which has opening part 8 corresponding to each conductive layer area. Then, printed-circuit substrate 11 with each desired formed contact part 10 is mounted through film 6 and sheet 9 to bond three parts tightly, and the ON-OFF operation of each contact part is performed through opening part 8 of sheet 9.
COPYRIGHT: (C)1980,JPO&Japio
JP13194578A 1978-10-26 1978-10-26 Manufacture of keyboard for electronic desk-top calculator Granted JPS5557933A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13194578A JPS5557933A (en) 1978-10-26 1978-10-26 Manufacture of keyboard for electronic desk-top calculator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13194578A JPS5557933A (en) 1978-10-26 1978-10-26 Manufacture of keyboard for electronic desk-top calculator

Publications (2)

Publication Number Publication Date
JPS5557933A true JPS5557933A (en) 1980-04-30
JPS641885B2 JPS641885B2 (en) 1989-01-13

Family

ID=15069875

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13194578A Granted JPS5557933A (en) 1978-10-26 1978-10-26 Manufacture of keyboard for electronic desk-top calculator

Country Status (1)

Country Link
JP (1) JPS5557933A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207163A (en) * 1982-03-03 1983-12-02 Casio Comput Co Ltd Sheet type miniature electronic device
JPS60122455A (en) * 1984-07-31 1985-06-29 Casio Comput Co Ltd Small sized electronic device
CN110406140A (en) * 2019-08-07 2019-11-05 电子科技大学 The preparation method and film of flexible electrochromic layer pattern film based on liquid-sheet disintegration self assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207163A (en) * 1982-03-03 1983-12-02 Casio Comput Co Ltd Sheet type miniature electronic device
JPS6259824B2 (en) * 1982-03-03 1987-12-12 Casio Computer Co Ltd
JPS60122455A (en) * 1984-07-31 1985-06-29 Casio Comput Co Ltd Small sized electronic device
JPS6261980B2 (en) * 1984-07-31 1987-12-24 Casio Computer Co Ltd
CN110406140A (en) * 2019-08-07 2019-11-05 电子科技大学 The preparation method and film of flexible electrochromic layer pattern film based on liquid-sheet disintegration self assembly
CN110406140B (en) * 2019-08-07 2021-08-03 电子科技大学 Preparation method of flexible electrochromic patterned film based on liquid film fracture self-assembly and film

Also Published As

Publication number Publication date
JPS641885B2 (en) 1989-01-13

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