To provide sanitary ware which can harmonize lightness, whiteness and chromaticity not possible heretofore and has high cleanability and stainproofness.
This sanitary ware is glazed by a glaze composition obtained by using fine grain SnO2 powder for an opacifier and decreasing coloring components in glaze raw materials as far as possible and a transparent glaze composition. The lightness L* by CIE 1976 color specification system complying with JIS Z 8729 of the glazed surface of the ware described above is ≥90, the chromaticity a* is -2 to +2 and the chromaticity b* is -2 to 0. In addition, the surface roughness Ra on the surface of the surface glazing layer is below 0.07 μm by a feeler type surface roughness measuring instrument (JIS-B 0651).
HAYASHI KOICHI
KASAHARA SHINGO