Abstract: A method of printing a three-dimensional object (90) including: providing a 3D inkjet printing system including: a printing chamber (162) accommodating a printing unit (120) having an inkjet printing head and a curing subunit (124), and a supply unit (130) including a modeling material and a support material; and printing the 3D object (90) in multiple consecutive layers according to a predefined printing sequence, wherein for at least one of the multiple consecutive layers the predefined printing sequence for the same respective layer includes depositing and curing the modeling material and the support material separately from each other either in time or in space. Some embodiments may include controlling a concentration of oxygen in the printing chamber (162) to be in a predefined oxygen concentration range. Some embodiments may include controlling a temperature in the printing chamber (162) to be in a predefined temperature range.

Abstract: A method of printing a three-dimensional object, comprises: for each of a plurality of arrays of nozzles, activating a subset of nozzles of the array to dispense a respective building material from the subset, so as to form an interleaved scan pattern of dispensed materials. The method comprises hardening the interleaved scan pattern, and repeating the activating and the hardening to form a stack of hardened interleaved scan patterns.

Abstract: A method of printing a three-dimensional object (90) including: providing a 3D inkjet printing system including: a printing chamber (162) accommodating a printing unit (120) having an inkjet printing head and a curing subunit (124), and a supply unit (130) including a modeling material and a support material; and printing the 3D object (90) in multiple consecutive layers according to a predefined printing sequence, wherein for at least one of the multiple consecutive layers the predefined printing sequence for the same respective layer includes depositing and curing the modeling material and the support material separately from each other either in time or in space. Some embodiments may include controlling a concentration of oxygen in the printing chamber (162) to be in a predefined oxygen concentration range. Some embodiments may include controlling a temperature in the printing chamber (162) to be in a predefined temperature range.

Abstract: A supporting structure built together with an object in an additive manufacturing (AM) process and configured to support an overhang of the object is described. The supporting structure includes a first array of pillars formed with a first material and reinforced with a second material. Each of the pillars in the first array includes a top. At least a portion of the tops in the first array adjoin and define a surface on which the overhang of the object may be supported. The first material is support material.

Abstract: A method of printing a three-dimensional object, comprises: for each of a plurality of arrays of nozzles, activating a subset of nozzles of the array to dispense a respective building material from the subset, so as to form an interleaved scan pattern of dispensed materials. The method comprises hardening the interleaved scan pattern, and repeating the activating and the hardening to form a stack of hardened interleaved scan patterns.

Abstract: A supporting structure built together with an object in an additive manufacturing (AM) process and configured to support an overhang of the object is described. The supporting structure includes a first array of pillars formed with a first material and reinforced with a second material. Each of the pillars in the first array includes a top. At least a portion of the tops in the first array adjoin and define a surface on which the overhang of the object may be supported. The first material is support material.

Abstract: A supporting structure built together with an object in an additive manufacturing (AM) process and configured to support an overhang of the object is described. The supporting structure includes a first array of pillars formed with a first material and reinforced with a second material. Each of the pillars in the first array includes a top. At least a portion of the tops in the first array adjoin and define a surface on which the overhang of the object may be supported. The first material is support material.