Portable radiographic imaging apparatus

A portable radiographic imaging apparatus;

• comprising:
• a sensor panel comprising two-dimensionally arrayed radiation detector elements;
• and
• a case that houses the sensor panel, wherein:
• the case comprises a front member or a back member that is composed of resin sheet material and that comprises a first part and a second part,
• the first part comprises:
• a rectangular incident plate forming part that forms an incident plate where radiation is incident;
• and
• four side wall forming parts that continue from four sides of the incident plate forming part, respectively, and are bent to form four side walls,
• the second part has a strip shape and covers at least one of a plurality of corners where two of the side walls are adjacent,
• the side walls are made of a continuous fiber reinforced resin that comprises fiber layers oriented in a predetermined direction,
• the fiber layers are oriented in a direction from one to the other of the adjacent side walls in the at least one of the corners, and
• no breakpoint exists in an area of the at least one of the corners, wherein the breakpoint is where the fiber layers are discontinuous over an entire thickness in a wall thickness direction.