发明名称 Timepiece dial, method of manufacturing a timepiece dial, and a timepiece
摘要 A timepiece dial having excellent transparency to electromagnetic waves (radio and light) and an excellent appearance, a timepiece dial manufacturing method for manufacturing the timepiece dial, and a timepiece having 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 to 20 pm and an average particle thickness of 30 nm to 50 nm. The average thickness of the dispersion film (3) is 0.5 pm to 3.0 pm. The metal powder (31) is disposed with a specific gap therebetween in the through-thickness direction of the dispersion film (3).
申请公布号 EP2420901(B1) 申请公布日期 2014.05.21
申请号 EP20110177761 申请日期 2011.08.17
申请人 SEIKO EPSON CORPORATION 发明人 TAKASAWA, KOKI
分类号 G04C10/02;G04B19/12 主分类号 G04C10/02
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