Invention Grant
US08427909B2 Timepiece dial, method of manufacturing a timepiece dial, and a timepiece 有权
钟表表盘,制造钟表表盘的方法和钟表

  • Patent Title: Timepiece dial, method of manufacturing a timepiece dial, and a timepiece
  • Patent Title (中): 钟表表盘,制造钟表表盘的方法和钟表
  • Application No.: US13208736
    Application Date: 2011-08-12
  • Publication No.: US08427909B2
    Publication Date: 2013-04-23
  • Inventor: Koki Takasawa
  • Applicant: Koki Takasawa
  • Applicant Address: JP Tokyo
  • Assignee: Seiko Epson Corporation
  • Current Assignee: Seiko Epson Corporation
  • Current Assignee Address: JP Tokyo
  • Priority: JP2010-183954 20100819; JP2011-066241 20110324
  • Main IPC: G04B19/06
  • IPC: G04B19/06
Timepiece dial, method of manufacturing a timepiece dial, and a timepiece
Abstract:
A timepiece dial has excellent transparency to electromagnetic waves (radio and light), and an excellent appearance, a timepiece dial manufacturing method enables manufacturing the timepiece dial, and a timepiece has the timepiece dial. The timepiece dial 1 has a substrate 2 that is electromagnetically transparent, and a dispersion film 3 containing a dispersion of metal powder 31 with an average particle diameter of 5 μm≦20 μm and an average particle thickness of 30 nm≦50 nm. The average thickness of the dispersion film 3 is 0.5 μm≦3.0 μm. The metal powder 31 is disposed with a specific gap therebetween in the through-thickness direction of the dispersion film 3.
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