A hard distal component formed at the distal part of an inserting section and a leading bending piece included in a bending section are joined using a substantially cylindrical hard joint pipe. A system that supports delivery and reception of multicast content across a unicast network includes a first device and a second device. The precursor is image-wise printed by an ink jet fluid comprising a compound capable of reducing the solubility of the binder in the aqueous alkaline developer.