Inkjet printing method and inkjet printing device

An inkjet printing method that forms a decorative printed layer having a three-dimensional texture on a printing surface, comprising:

• acquiring dot pattern data indicative of printed positions of dots to be printed on the printing surface corresponding to gloss level information indicative of glossiness in a region in the printing surface;
• printing the dots of curable ink based on the dot pattern data;
• and
• curing the printed dots, wherein
• the dot pattern data indicates that:
• a distance between the adjacent dots becomes a distance where the adjacent dots before the curing are allowed to be maintained independently without bonding to one another when the gloss level information indicates that the gloss level information is lower than a specific glossiness;
• and
• the distance between the adjacent dots becomes a distance where the adjacent dots before the curing bond to one another when the gloss level information indicates that the gloss level information is higher than the specific glossiness, and
• the inkjet printing method further comprises:
• repeating the printing of the dots and the curing of the printed dots by a plurality of times,
• wherein
• the decorative printing in which the cured dots of the curable ink are multi-layered on at least a part of the printing surface is formed and
• the repeating is performed by a multi-pass system, wherein
• the multi-pass system comprising:
• a dot printing unit,
• a conveying unit and
• a base material, wherein
• the dot printing unit comprising:
• a first nozzle group and a second nozzle group arranged from an upstream in the conveying direction of the conveying unit in order and the base material comprising:
• a first printed region and a second printed region disposed in a longitudinal direction of the base material, wherein
• the first nozzle group performs the printing of the dots in the first pass on the second printed region, when the second nozzle group performs the printing of the dots in the second pass on the first printed region.

An inkjet printing device that forms a decorative printed layer having a three-dimensional texture on a printing surface, comprising:

• a printing unit configured to eject curable ink that cures under a predetermined condition;
• a curing unit;
• a processor;
• and
• a medium that includes a series of pieces of instruction information executable by the processor and usable by a computer connected to the processor, wherein
• the instruction information:
• causes the printing unit to print dots of the curable ink based on dot pattern data indicative of printed positions of the dots to be printed on the printing surface;
• and controls the curing unit so as to cure the printed dots, and
• the dot pattern data indicates that:
• a distance between the adjacent dots becomes a distance where the adjacent dots before the curing are allowed to be maintained independently without bonding to one another in a first region;
• and
• the distance between the adjacent dots becomes a distance where the adjacent dots before the curing bond to one another in a second region different from the first region, wherein
• the instruction information:
• causes the repeating the printing of the dots and the curing of the printed dots by a plurality of times, wherein
• the decorative printing in which the cured dots of the curable ink are multi-layered on at least a part of the printing surface is formed and
• the inkjet printing device further comprises:
• a dot printing unit,
• a conveying unit and
• a base material, wherein
• the dot printing unit comprises:
• a first nozzle group and a second nozzle group arranged from an upstream in the conveying direction of the conveying unit in order, and
• the base material comprises:
• a first printed region and a second printed region disposed in a longitudinal direction of the base material, wherein
• the instruction information:
• causes the first nozzle group performs the printing of the dots in the first pass on the second printed region, when the second nozzle group performs the printing of the dots in the second pass on the first printed region.