An ink jet recording method comprising a step of: jetting a dye ink onto a surface of a recording medium, wherein said dye ink comprises a latex capable of absorbing ultraviolet light, and said recording medium comprises a substrate having thereon at least one ink absorbing layer, the outermost ink absorbing layer being a porous layer. The detector housings are laterally spaced and substantially parallel and are provided to receive a magnetic field detector. The hinge mechanism essentially comprises a displacement mechanism as well as a telescopic scissor-type mechanism.