Device for formfree printing a three-dimensional object in layers

1. A device for formfree printing a three-dimensional object in layers using at least one printing material, the device comprising:

at least one printing head to output printing material in at least one printing material string in string-shape;

a printing platen to receive the at least one printing material string output by the at least one printing head;

a rod-shaped heating device movably arranged over the printing platen and parallel to a surface of the printing platen, wherein the rod-shaped heating device comprises a rod-shaped lamp, and wherein the rod-shaped lamp has a length of the same or higher than the width of the printing platen so that the irradiated heat is irradiated on substantially the entire width of the printing platen;

a heat controller configured to control the rod-shaped heating device to emit a heat irradiation directed to the printing platen to heat the at least one printing material string to a reaction temperature to trigger a chemical reaction of the at least one printing material of the at least one printing material string;

wherein the rod-shaped heating device, the heat controller, and the printing platen are configured such that substantially the entire width of the surface of the printing platen is irradiated homogeneously;

at least one motor coupled to the rod-shaped heating device to move it over the printing platen;

a motor controller configured to control the at least one motor to move the rod-shaped heating device over the printing platen to harden the at least one printing material string printed on the printing platen.

2. The device of claim 1 , wherein the rod-shaped lamp is configured to emit light having a wavelength in the range from about 780 nm to about 12 μm.

3. The device of claim 2 , wherein the rod-shaped lamp is a rod-shaped infrared lamp.

4. The device of claim 1 , further comprising a reservoir to receive the at least one printing material, wherein the reservoir is coupled to the at least one printing head to supply the at least one printing material to the at least one printing head.

5. The device of claim 1 , further comprising:

a first pre-reservoir to receive a first pre-printing liquid;

a second pre-reservoir to receive a second pre-printing liquid; and

a reservoir to receive the first pre-printing liquid and the second pre-printing liquid and to provide the at least one printing material from the first pre-printing liquid and the second pre-printing liquid.

6. The device of claim 1 , wherein the rod-shaped heating device is linearly movably arranged over the printing platen.

7. The device of claim 4 , further comprising a dosage controller configured to dose the at least one printing material supplied to the reservoir.

8. The device of claim 5 , further comprising a dosage controller configured to dose the amount of first pre-printing liquid and the amount of second pre-printing liquid supplied to the reservoir.

9. The device of claim 1 , wherein the motor controller is further configured to control the at least one motor to move the rod-shaped heating device over the printing platen at least once each time after a respective layer of the at least one printing material string has been printed on the printing platen.

10. The device of claim 1 , wherein the rod-shaped lamp comprises a heating region and is configured to homogenously emit heat along the heating region, wherein the heating region has a length of the same or higher than the width of the printing platen so that the heat is irradiated on substantially the entire width of the printing platen.

11. The device of claim 1 , wherein the motor controller is configured to control the at least one motor to linearly move the rod-shaped heating device over the printing platen only along a length direction of the printing platen to irradiate the entire surface of the printing platen.