Patent ID: 7832131

Claim:
An afterglowing sign comprising: a print with at least one afterglowing pigment, a sign material comprising a background surface, the background surface comprising at least one symbol or border and a background area, the background area being a background area print of a colour on the background surface, the background area print defining a boundary of the at least one symbol or border, such that the at least one symbol or border is not part of the background area print, wherein the print with at least one afterglowing pigment is printed on the background area print, and wherein the color of the background area print shines through the print with at least one afterglowing pigment, the afterglowing sign further comprising one of the following features: A) only the background area print is printed on with the print with at least one afterglowing pigment, such that the at least one symbol or border is not printed with any print with at least one afterglowing pigment; B) the background area print is printed on with the print with at least one afterglowing pigment, which has a first color, and the at least one symbol or border is printed with a second print with at least one afterglowing pigment, which has a second color, the first color being different from the second color, wherein the color of the at least one symbol or border shines through the second print with at least one afterglowing pigment; or C) the at least one symbol or border and the background area print both being printed on by the same print with at least one afterglowing pigment.