Removal of halos from glass-ceramic articles decorated with a ce

Details Removal of halos from glass-ceramic articles decorated with a ce Removal of halos from glass-ceramic articles decorated with a ce

1993-01-11

1996-03-19

Turner, Archene

Coating processes

Applying superposed diverse coating or coating a coated base

Metallic compound-containing coating

4274194, 428212, B05D 306

Patent

active

055002552

ABSTRACT:
For removing halo formation, which often occurs on glass-ceramic articles decorated with a ceramic color, a layer of SiO.sub.2 is applied to the glass-ceramic article after the glass-ceramic color has been burnt-in. The layer is preferably 40-200 nm thick. The layer can contain up to 66.5% by weight of oxides, which change the refractive index so that the layer is invisible, the layer being, for example, 85-93% by weight of SiO.sub.2 and 7-15% by weight of TiO.sub.2.

REFERENCES:
patent: 3346410 (1967-10-01), McCarthy
patent: 4264679 (1981-04-01), Panzarino
patent: 4273826 (1981-06-01), McCollister
patent: 4781970 (1988-11-01), Barbee
patent: 5137779 (1992-08-01), Hinz
Chemical Abstracts, vol. 87, 1977, Columbus, Ohio, Abstract No. 121771g, p. 261.
Database WPIL, Week 10, Derwent Publications Ltd., London, Great Britain, AN 81-163320 (abstract of JP-A-55 167 191).

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