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US 11,628,675 B2Granted
Inkless printing method, inkless printer, and printed substrate
AssigneeMacsa Id, S.A.
InventorVenkatesh Seshaiya Doriaswamy Chandrasekar
Life of this patent
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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.
Claims27
An inkless printing method, comprising a sequence of steps which are performed in the following order:
- A) providing at least one carbonizable substrate,
- B) determining at least one carbonization related characteristic of said at least one carbonizable substrate,
- C) defining at least one printing zone of the at least one carbonizable substrate,
- D) position-selectively carbonizing said at least one defined at least one printing zone of the at least one carbonizable substrate by at least one time position-selectively irradiating of said at least one defined printing zone of the at least one carbonizable substrate, by using at least one primary beam irradiation to form at least one printed marking within said defined at least one printing zone, and
- E) at least one time irradiating of at least a part of said at least one defined printing zone, by using at least one secondary beam irradiation, such that each printing zone is irradiated at least twice during the execution of D) and E),
- wherein during B) a carbonization temperature of the at least one carbonizable substrate is determined, and
- wherein during E) the complete at least one carbonizable substrate is heated to a temperature below the carbonization temperature defined during B).
4 more elements
Dependencies are inferred from the claim text.