METHOD FOR PRINTING AND DRYING
First Claim
1. A method for printing and drying a substrate, which comprises the steps of:
- printing an ink containing water and pigment onto the substrate (1) in an inkjet printing process, the substrate having an initial moisture content before the inkjet printing process and absorbing at least the water of the ink, causing the initial moisture content of the substrate to rise to a changed moisture content;
performing a drying process which includes the sub-steps of;
applying radiation which selectively acts on water molecules in a first drying step; and
applying additional radiation which selectively acts on the pigment in a second drying step in such a way that after completion of the first and second drying steps, the water of the ink applied has essentially completely evaporated and the substrate has essentially reattained the initial moisture content.
1 Assignment
0 Petitions
Accused Products
Abstract
A method prints and dries a substrate where ink containing water and pigment is printed onto the substrate in an inkjet printing process. The substrate has an initial moisture content and absorbs at least water of the ink, causing the moisture content of the substrate to rise. Radiation selectively acting on the water molecules is applied in a first drying step and then radiation selectively acting on the pigment is applied in a second drying step in such a way that after completion of the two drying steps, the water of the applied ink has essentially completely evaporated and the substrate has essentially reattained its initial moisture content. In this manner optimum drying of substrates to which ink has been applied occurs.
2 Citations
10 Claims
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1. A method for printing and drying a substrate, which comprises the steps of:
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printing an ink containing water and pigment onto the substrate (1) in an inkjet printing process, the substrate having an initial moisture content before the inkjet printing process and absorbing at least the water of the ink, causing the initial moisture content of the substrate to rise to a changed moisture content; performing a drying process which includes the sub-steps of; applying radiation which selectively acts on water molecules in a first drying step; and applying additional radiation which selectively acts on the pigment in a second drying step in such a way that after completion of the first and second drying steps, the water of the ink applied has essentially completely evaporated and the substrate has essentially reattained the initial moisture content. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification