초록 ▼

The cook top is divided into at least one cold zone and cooking zones heatable by radiant heating elements under the cooking zones. The cook top includes a transparent, colorless glass ceramic or glass plate and a non-ceramic underside layer or layers on the underside of the plate. The upper side of

The cook top is divided into at least one cold zone and cooking zones heatable by radiant heating elements under the cooking zones. The cook top includes a transparent, colorless glass ceramic or glass plate and a non-ceramic underside layer or layers on the underside of the plate. The upper side of the glass ceramic or glass plate is free of any decoration or layer, thus providing a cooking surface having improved smoothness for easy cleaning. The non-ceramic underside layer is permeable to infrared radiation in the cooking zones and is a color-imparting decoration. The underside layer, at least in cooking zones, has transmission properties for visible light such that the radiant heating elements are not visible from above, at least when they are not in a switched-on state.

대표청구항 ▼

1. A cook top consisting of a transparent, untinted glass ceramic or glass plate and a single underside layer on an underside of said plate, and said glass plate consisting of pre-stressed glass;wherein said glass plate or glass ceramic plate has a cooking surface on an upper side thereof, said glas

1. A cook top consisting of a transparent, untinted glass ceramic or glass plate and a single underside layer on an underside of said plate, and said glass plate consisting of pre-stressed glass;wherein said glass plate or glass ceramic plate has a cooking surface on an upper side thereof, said glass plate or glass ceramic plate has a plurality of cooking zones and at least one cold zone and said cooking zones are heatable by radiant heating elements arranged under the cooking zones; wherein an upper side of said plate is free of any decoration or layer and said single underside layer is colored according to a desired decoration and, at least in said cooking zones, is IR-permeable; and wherein said single underside layer has transmission properties for visible light such that said radiant heating elements are not visible from above the glass ceramic or glass plate at least when said radiant heating elements are not in a switched-on state. 2. The cook top as defined in claim 1, wherein said single underside layer has a composition such that said single underside layer is heat resistant at temperatures greater than 350° C. in said cooking zones and is heat resistant in said at least one cold zone at temperatures up to approximately 350° C.3. The cook top as defined in claim 1, wherein said single-underside layer, at least in said cooking zones, comprises an organometallic solution with at least one complexed metal component, colloidal metal component and/or noble metal component.4. The cook top as defined in claim 1, wherein said single underside layer, at least in said cooking zones, comprises an organic solution of at least one noble metal compound in at least one organic solvent.5. The cook top as defined in claim 1, wherein said single underside layer, at least in said cooking zones, comprises at least one sol-gel layer.6. The cook top as defined in claim 2, wherein said glass ceramic or glass plate has transition zones between said cooking zones and said at least one cold zone and wherein said single underside layer in said transition zones is heat resistant at temperatures up to approximately 350° C. and comprises a lustrous or organometallic coating.7. The cook top as defined in claim 6, wherein said lustrous or organometallic coating comprises a noble metal resinate layer, an anticorrosion coating or a sol-gel layer.8. The cook top as defined in one of claims 3 to 7, wherein said single underside layer comprises at least one pigment.9. The cook top as defined in claim 2, wherein said glass ceramic or glass plate has transition zones between said cooking zones and said at least one cold zone and wherein said single underside layer in said at least one cold zone and said transition zones is heat resistant at temperatures up to approximately 300° C. and comprises an organically modified glass or an organic coating containing at least one pigment in a polymer binder matrix or a sol-gel matrix, and wherein said at least one pigment is an inorganic pigment, a lustrous pigment, a metal-effect pigment, a pearl-gloss pigment or an interference pigment, or a mixture thereof.10. The cook top as defined in claim 1, wherein said single-underside layer is backed by a cover layer (8) having a color different from said color-imparting decoration.11. The cook top as defined in claim 1, wherein said single underside layer is provided with gaps between said cooking zones and said at least one cold zone to further mark said cooking zones.12. The cook top as defined in claim 11, further comprising providing differently colored decorations in said gaps between said cooking zones end said at least one cold zone, said differently colored decorations having a color that is different from that of said color-imparting decoration.13. The cook top as defined in claim 1, wherein said single underside layer is provided with display windows.14. The cook top as defined in claim 13, further comprising residual heat indicators arranged in said display windows.15. The cook top as defined in claim 13, further comprising colored LEDs or LCDs arranged in said display windows.16. The cook top as defined in claim 1, wherein said color-imparting decoration comprises a printed pattern at least in said cooking zones.17. A cook top consisting of a transparent, untinted glass ceramic or glass plate having a cooking surface on an upper side thereof, said cooking surface being divided into a plurality of cooking zones and at least one cold zone, at least one underside layer on an underside of said plate in said cooking zones and a foil on said underside of said plate in said at least one cold zone;wherein said cooking zones are heatable by radiant heating elements arranged in said cooking zones and said glass plate consists of pre-stressed glass; wherein an upper side of said plate is free of any decoration or layer and said at least one underside layer comprises an IR-permeable layer embodied as a color-imparting decoration; wherein said at least one underside layer has transmission properties for visible light such that said radiant heating elements are not visible from above the glass ceramic or glass plate at least when said radiant heating elements are not in a switched-on state; and wherein said foil consists of aluminum or noble steel or is a polyester or melamine resin film laminated on the plate with transparent glue. 18. The cook top as defined in claim 17, wherein said foil has printed decorations thereon.