Transparent glass ceramic plate that has an opaque, colored bottom coating over the entire surface or over part of the surface

摘要: A transparent, colorless lithium-aluminosilicate glass ceramic plate with high-quartz mixed crystals as the prevailing crystal phase, which is provided on one side an opaque, colored, temperature-stable coating over entire surface or to a large extent, described, has content of Nd 2 O 3 40 4000 ppm, Yellowness Index less than 10% 4 mm (ceramic) layer thickness, and variegation colors in CIELAB color system C* 5. The preferably composition (in % by weight based oxide) of: Li 3.0-4.5, Na 0-1.5, K ΣNa O+K 0.2-2.0, MgO 0-2.0, CaO SrO BaO 0-2.5, ZnO B 0-1.0, Al 19-25, SiO 55-69, TiO 1-3, ZrO 1-2.5, SnO 0-0.4, ΣSnO +TiO <3, P 5 0-3.0, 0.01-0.4, CoO 0.0-0.004.