Method for additive manufacture, and system

A method for additive manufacturing of three-dimensional objects by a system comprising a build space, a build platform within the build space, on which the at least one object to be manufactured can be built up layer by layer, at least one coating unit for applying the build-up material layer by layer in a build plane which is provided parallel to the build platform, and at least a first irradiation unit and a second irradiation unit for locally selective solidification of the build-up material in the build plane, the method comprising:

• subdividing the build space into at least a first and a second segment along an extension direction of the build platform, wherein at least one of the segments is formed as a single segment or is subdivided into at least two subsegments and each segment or the subsegments of one of the segments assigned to one of the irradiation units;
• moving the at least one coating unit in the build space along the segments at a constant speed;
• applying at least one layer of the build-up material by using the at least one coating unit;
• activating the assigned irradiation unit in the respective segment or subsegment after the at least one layer of build-up material in the respective segment or subsegment is applied, the applied layer of build-up material is not yet selectively solidified and the at least one coating unit has left the segment or subsegment;
• and
• deactivating the application of build-up material by the at least one coating unit after the application of at least one layer of the build-up material, wherein the at least one coating unit is moved on through any number of segments or subsegments so that the at least one coating unit performs at least one idle run.