Method for manufacturing printout having cross-sectional pattern

A three-dimensional printing method of a printed product with a cross-sectional pattern, comprising:

• a step of providing each of a plurality of inks into each of two or more partitioned spaces of an ink extruding member equipped in a three-dimensional printing device,
• wherein the ink extruding member comprises
• an ink-receiving part that receives each of the plurality of inks,
• an ink-extruding part, and
• a partitioning member providing the two or more partitioned spaces in the ink-receiving part,
• a step of applying the same pressure condition to the each of the plurality of inks retained in each of the two or more partitioned spaces, and
• extruding the plurality of inks in the two or more partitioned spaces into a single extruding port to prepare an extruded ink product, and
• a step of printing the extruded ink product on a plate,
• wherein the extruded ink product discharged from the ink-extruding part maintains the same cross-sectional pattern as the cross-sectional pattern of the ink-receiving part,
• wherein a cross-sectional diameter of the printed product is smaller than a cross-sectional diameter of the ink-receiving part, and
• wherein each of the plurality of the inks comprises one or more selected from the group consisting of a gelling polymer, a cell, a growth factor, and an extracellular matrix.