PURPOSE: To effectively execute destaticization, by providing an inlet side outside wall of a pin member for storing a sheet of a copying machine, etc. by inclining it against the sheet inserting direction, and providing a destaticizing member in the vicinity of a place where the sheet passes through, of the inclined outside wall of other pin member.

CONSTITUTION: Paper 14 which has been developed, transferred and fixed is gattered by a sorter, and pins 31aW31c of the sorter are superposed and form a pin group. The pins 31aW31c form outside walls 51aW51c on the vertical carrying path, also form pin inlet parts 52aW52c together with a pin of the upper stage by one, and also the outside walls 51aW51c are inclined in the direction where the pin inlet expands. Brush-like destaticizing devices 50a, 50b are provided in the vicinity of a place where paper passes through, and are installed to the outside walls 51bW51c, respectively, in the downward direction toward the pin inlet. In this way, when paper 14 is guided by a switching pawl 33a and is stored in the pin 31a in the direction as indicated with an arrow E, the paper is destaticized after passing through the adjacent part of the tip of the destaticizing device. Also, even in case of a state that the paper 14 has been loaded, as shown by the pin 31b, it can be destaticized by the destaticizing device 50b installed at an almost right angle with the paper surface.