A fluid cleaning filter of the present invention consists of a composite matrix composed of a pleated substrate 2 configured into a pleated shape and an active carbon-containing layer 3, wherein the pleated substrate 2 is made of polyurethane foam 2a having a three-dimensional network skeletal structure, and the composite matrix is configured into a cylindrical shape. The multiple-ring aromatic hydrocarbon fuels include those that contain polynuclear aromatic hydrocarbons. In a first mode of operation, a portion of the peripheral memory storage device is mounted on the workstation for operation therewith as a storage medium in a first mode of operation. The contacts face the card insertion port to electrically contact with a distal end side of the memory card. The RBG table creating unit specifies the plurality of channels in descending order of quality of the channels within the range in which the sum of the amount of data received via the channels is equal to or less than the capacity of the second buffer.