This invention relates to an organophotoreceptor that includes: a charge transport compound having the formula 1where R1 and R2 are, independently, a carbazolyl group; R3 and R4 are, independently, hydrogen, an alkyl group, an aryl group, or a heterocyclic group; and X is a sulfonyldiphenylene group; a charge generating compound; and an electrically conductive substrate. The lumbar tracking device allows the user to grip the controller to control the rotation of the rotation axis, and drive the threaded rod to rotate spirally forward and backward so as to synchronously drive the lumbar tracking base to move forward and backward for stretching or releasing. The deposition of the liquid layer is preferably carried out with high kinetic energy to ensure complete penetration of the monomer throughout the body of the substrate. The metal base comprises ground regions continuous in a longitudinal direction thereof, ladder portions extending transversely relative to the metal base, and band-like portions formed between the openings. Note that other layers may be interspersed between those set forth here.