An image processing apparatus which is capable of suppressing an increase in the circuit size of buffers between data-processing circuits, thereby enabling an associated component thereof to be implemented by hardware. In one aspect, a system includes an interchange and a data storage facility configured to store payment transaction records associated with phone numbers. The photocatalytic film can also be specified by the intensity ratio between x-ray diffraction peaks of the anatase structure of titanium oxide. The shade casing has a minor opening with a minor annular edge in which the mounting bracket is mounted.