B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 18/00 (2006.01) G09F 13/16 (2006.01)
Patent
CA 2512259
A fired product having a luminous function is manufactured by: adhering material-adapting glass frit to a surface of a ceramic material; adhering coating glass frit to the surface of the material-adapting glass frit after drying of the material-adapting glass frit; adhering luminous material particles having a particle size of 50 to 250 µm in one uniform layer to the coating glass frit layer before drying of the coating glass frit so that the upper portions of the luminous material particles are partly exposed from the coating glass frit; alternately stacking coating glass frit and luminous material particles several times; covering the topmost luminous material particles partly exposing from the coating glass frit by adhering coating glass frit; printing an image portion on the surface of the coating glass frit after drying of the coating glass frit; adhering adapting glass frit at a predetermined thickness to the coating glass frit having the printed image portion; uniformly adhering protecting glass frit particles having a large particle size to the surface of the adapting glass frit; and firing the adhered stack at high temperature, wherein the material-adapting glass frit has a coefficient of thermal expansion of an intermediate value between those of the ceramic material and the luminous material particles, the coating glass frit has a coefficient of thermal expansion substantially the same as that of the luminous material particles, and the adapting glass frit has a coefficient of thermal expansion of an intermediate value between those of the luminous material particles and the protecting glass frit particles having a large particle size. This fired product is used in an image forming part of an evacuation route guiding sign device as a fired product layer.
Fukuda Tomokazu
Matsumoto Gou
Nakagawa Koichiro
Tanaka Hiroshi
Fetherstonhaugh & Co.
Universal Light Co. Ltd.
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