A press plate includes: a press section that is disposed to face towards an imaging face of an imaging table and is resiliently deformable; and a movable support point portion that is movable and supports the press section at the opposite side to the imaging face so that a reaction force occurring at the press section is adjusted according to a position of the movable support point portion to support the press section. The press plate may further include: a support section that is disposed separated from the press section on the opposite side to the imaging face and with at least one end portion coupled to one end portion of the press section, wherein the movable support point portion is movable between the press section and the support section so that a deformation amount of the press section is adjusted by such movement.