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US 2009/0301676 A1Published application
Sheet material comprising at least one watermark having a colored shade
AssigneesArjowiggins, Arjowiggins Security
InventorsHenri Rosset, Ivan Thierry
Life of this patent
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Abstract
The present invention relates to a sheet material comprising at least one first layer defining an outer surface of the sheet material and having at least one first color, at least one second layer comprising at least one watermark and having at least one second color, the first and second colors having at least different saturations and/or hue angles.
Claims47
A sheet material comprising:
- at least one first fibrous layer or coating layer deposited by a surfacing treatment having at least one first color;
- at least one second layer comprising at least one watermark and having at least one second color;
- at least one of the first and second layers incorporating at least one dyeing agent in its mass, chosen so as to give said layer a colored shade.
A sheet material comprising:
- at least one first layer comprising at least one watermark and defining an outer surface of the sheet material and having at least one first color;
- and
- at least one second layer comprising at least one watermark and having at least one second color, the first and second colors having at least different saturations and/or hue angles.
A sheet material comprising:
- at least one first layer defining an outer surface of the sheet material and having at least one first color;
- at least one second layer comprising at least one watermark and having at least one second color, the first and second colors having at least different saturations and/or hue angles;
- at least one of the first and second layers incorporating a dyeing agent in its mass, chosen so as to give said layer a colored shade,
- the first layer having been deposited on the second layer while the two layers were still wet,
- by a surfacing treatment,
- by impregnation of the second layer;
- or
- by coating onto the second layer.
5 more elements
A sheet material comprising:
- at least one first layer;
- and
- at least one second layer;
- the first and second layers incorporating first and second fluorescent agents respectively.
1 more element
A sheet material comprising:
- at least one first layer;
- and
- at least one second layer;
- the first and second layers incorporating at least one dyeing agent and at least one fluorescent agent that is invisible in visible light respectively.
1 more element
Dependencies are inferred from the claim text.