Stiffness evaluation of the SCS with respect to the linewidth L and number of lines n. Results of three-point bending tests with a) i) n = 10 and ii) n = 4. Error bars indicate ± 1 SD. b) Stiffness distribution of the SCS. The crease parts where the ink was printed exhibited high stiffness, whereas the straight-line parts exhibited low stiffness. c) The SCS cross-section immediately after the completion of the three-point bending test. The SCS fabricated with n = 4 was significantly deformed.