It is an object of the present invention to provide a print head that is usable in a horizontal printer, that is small in size, that is superior in mass production, that can easily perform discharge control, that is excellent in reliability, and that is excellent in practicality to be writable in a state in which a recording medium is not bent. The split-ring can come into direct contact with the anchoring member or members to hold the member or members in the orifices. In another embodiment, the method comprises obtaining megestrol acetate from a container associated with published material providing information is metabolized by a cytochrome p450 isozyme.