Abstract: Systems and methods relate generally to a concealable marking. In an example, obtained is a printing device having a printhead, a plasma head, a platform, and a stencil holder. The printhead is configured to print to a surface of a medium. The plasma head is configured to provide a plasma. The platform is configured to support and transport the medium. The stencil holder is configured to hold a stencil between the surface of the medium and the plasma head. A region of the surface of the medium is covered with the stencil. The stencil defines at least one opening for exposure of a portion of the region of the surface. A plasma is generated with the plasma head. The portion of the surface of the medium is exposed to the plasma through the at least one opening to hydrophilize the portion of the surface thereof to provide the concealable marking.

Abstract: Systems and methods relate generally to a concealable marking. In an example, obtained is a printing device having a printhead, a plasma head, a platform, and a stencil holder. The printhead is configured to print to a surface of a medium. The plasma head is configured to provide a plasma. The platform is configured to support and transport the medium. The stencil holder is configured to hold a stencil between the surface of the medium and the plasma head. A region of the surface of the medium is covered with the stencil. The stencil defines at least one opening for exposure of a portion of the region of the surface. A plasma is generated with the plasma head. The portion of the surface of the medium is exposed to the plasma through the at least one opening to hydrophilize the portion of the surface thereof to provide the concealable marking.

Abstract: A method for performing laser-ablation printing may include (i) determining an image to be printed on a printing substrate; (ii) ablating a printing material to expel a plurality of ablated printing material particles from a surface of the printing material; (iii) electrically charging the ablated printing material particles; and (iv) accelerating the electrically charged ablated printing material particles toward the printing substrate so that the accelerated particles are deposited on the printing substrate in a pattern that corresponds to the determined image.

Abstract: A method for performing laser-ablation printing may include (i) determining an image to be printed on a printing substrate; (ii) ablating a printing material to expel a plurality of ablated printing material particles from a surface of the printing material; (iii) electrically charging the ablated printing material particles; and (iv) accelerating the electrically charged ablated printing material particles toward the printing substrate so that the accelerated particles are deposited on the printing substrate in a pattern that corresponds to the determined image.

Abstract: In one aspect, a method is described. The method may include exposing a printing surface to a first plasma in order to increase a hydrophilicity of the printing surface. The method may further include, after increasing the hydrophilicity of the printing surface, depositing a printing material on the printing surface. Additionally, the method may include, after depositing the printing material on the printing surface, exposing the printing surface to a second plasma in order to increase a hydrophobicity of the printing surface.

Abstract: In one aspect, a method is described. The method may include ionizing a plasma gas to generate a plasma in a plasma source and accelerating the plasma toward a work surface. The method may further include adding a material to the plasma, thereby melting the material and accelerating the melted material toward the work surface. The method may further include depositing successive layers of the melted material on the work surface to form a three-dimensional object. Each of the successive layers may correspond to one of a number of planar slices of the three-dimensional object.

Abstract: In one aspect, a method is described. The method may include exposing a printing surface to a first plasma in order to increase a hydrophilicity of the printing surface. The method may further include, after increasing the hydrophilicity of the printing surface, depositing a printing material on the printing surface. Additionally, the method may include, after depositing the printing material on the printing surface, exposing the printing surface to a second plasma in order to increase a hydrophobicity of the printing surface.

Abstract: In one aspect, a method is described. The method may include ionizing a plasma gas to generate a plasma in a plasma source and accelerating the plasma toward a work surface. The method may further include adding a material to the plasma, thereby melting the material and accelerating the melted material toward the work surface. The method may further include depositing successive layers of the melted material on the work surface to form a three-dimensional object. Each of the successive layers may correspond to one of a number of planar slices of the three-dimensional object.