Abstract: Method of creating at least a part of an electronic circuit, comprising the steps of providing at least one carbonizable substrate, in particular a cellulose based substrate, and position-selectively irradiating at least one part of the substrate to a temperature exceeding the carbonization temperature of said substrate, such that the irradiated part of the substrate is carbonized to form at least one electrically conductive track and/or pad; and device comprising: at least one irradiation source, in particular a laser, such as a CO2 laser, being configured to position-selectively irradiate at least one part of a carbonizable substrate to a temperature exceeding the carbonization temperature of said substrate, such that the irradiated part of the substrate is carbonized to form at least one electrically conductive track and/or pad.

Abstract: The invention relates to an inkless printing method. The invention also relates to an inkless printing device, in particular configured to perform at least a part of the method according to the invention. The invention furthermore relates to a substrate provided with at least one printed marking realised by applying the method according to the invention and/or the device according to the invention.

Abstract: A printing apparatus, including a laser to treat a substrate by at least partially carbonizing said substrate, where tar-like compounds are formed in the substrate as reaction products of the carbonizing, and an electromagnetic radiator irradiates the reaction products in the substrate to cause at least the tar-like compounds to polymerize and interlink. Further embodiments relate to a printing apparatus, including a laser to treat a substrate, where reaction products are formed in the substrate, and a compressor compresses at least the reaction products in the substrate. An embodiment also relates to a printing method, including at least partially carbonizing a substrate with a laser, forming tar-like compounds as reaction products of the carbonizing in said substrate; compressing the reaction products onto the substrate; and supplying energy to the reaction products that are pressed onto the substrate.

Abstract: A printing apparatus, including: a feed, a printer, a controller configured to control operation of the printer, and a print quality sensor configured to acquire print quality information, where the controller is configured to adapt operation of the printer based on the print quality information. Further embodiment relates to a printing method, including the steps of: printing on a substrate in a printing operation; acquiring print quality information; and adaptation of the printing operation based on the print quality information.

Abstract: A device for the selective carbonization of at least a part of a surface of a paper object, including receiving means for receiving the paper object, at least one laser for selectively heating one or more parts of the surface of said paper object to a level wherein the heated part of said surface at least partly carbonizes and thereby changes color, and control means for controlling the laser. A method for the selective carbonization of at least a part of a surface of a paper object, including the steps of: receiving the object in receiving means, and controlling heating means with control means in order to selectively heat one or more parts the surface of said paper object to a level wherein the heated part of said surface at least partly carbonizes and thereby changes color.

Abstract: A device for the selective carbonization of at least a part of a surface of a paper object, including receiving means for receiving the paper object, at least one laser for selectively heating one or more parts of the surface of said paper object to a level wherein the heated part of said surface at least partly carbonizes and thereby changes color, and control means for controlling the laser. A method for the selective carbonization of at least a part of a surface of a paper object, including the steps of: receiving the object in receiving means, and controlling heating means with control means in order to selectively heat one or more parts the surface of said paper object to a level wherein the heated part of said surface at least partly carbonizes and thereby changes color.