Invention Grant
- 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
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Application No.: US13208736Application Date: 2011-08-12
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Publication No.: US08427909B2Publication 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

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.
Public/Granted literature
- US20120044788A1 Timepiece Dial, Method of Manufacturing a Timepiece Dial, and a Timepiece Public/Granted day:2012-02-23
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