3  EP 3 800 017 A1 4  a bound materialisfedfroma boundmaterialfeeding unit of a bound material loading table. Fig. 3 is a perspective view showing the trimmer in which the bound material is positioned on a table of a table unit. Fig. 4 is a perspective view showing a trim unit and a rotating table unit in which the top edge portion of the bound material is trimmed. Fig.5 isa perspective view showing the trimunitand the rotating table unit in which the bottom edge por- tion of the bound material is trimmed. Fig.6 isa perspective view showing the trimunitand the rotating table unit in which the cover together with flap portions is peeled up, and the fore-edge portion of the bound material is trimmed. Fig. 7 is a side view showing the trim unit and the rotating table unit in which a trimming cutter is dis- posed on a non-trimming position. Fig. 8 is a side view showing the trim unit and the rotating table unitin which the trim cutterisdisposed on a trimming position, and the top edge portion or the bottom edge portion of the bound material is trimmed. the bound material is moved toward the guide portions, and the guide portions are inserted between the book block and the cover so as to peel the cover together with the flap portions up. 5 10 [0012] According to a preferred embodiment of t present application, the trimmer further comprising spring portion mounted between the guide portion and the pressure portion, wherein the guide portions are connected with the pressure por- tion via the spring portion and are movable with respect to the pressure portion by the spring portion. [0013] According to a preferred embodiment of t present application, the trimmer further comprising: 15 20 a table thatpositions the bound materialplacedther- eon; a table unit that rotates the table in such a manner thatthe bound materialis rotated to each of top,bot- tom, and fore-edge trimming positions; and a driving mechanism that moves the table and the trim cutter in a direction close to or away from each other relatively, wherein when the bound material is rotated to the fore-edge trimming position, the bound material is moved away from the base portion and the pressure portion, the one end portions of the guide portions are con- tacted with the face and reverse surfaces of t project portion of the book block, the bound material is moved toward the guide por- tions, the guide portions are inserted between the book block and the cover so as to peel the cover together with the flap portions up. 30 25 35 Fig. 9 is a side view showing the trim unit and the rotating table unit in which the trim unit is disposed on a stand-by position. Fig. 10 is a side view showing the trim unit and the rotating table unit in which the trim unit is disposed on thetrimming position,andthe covertogetherwith the flap portions is peeled up. Fig. 11 is a side view showing the trim unit and the rotating table unitin which the trim cutterisdisposed on the trimming position, and the fore-edge portion of the bound material is trimmed. [0014] According to a preferred embodiment of t present application, the trimmer further comprising fore-edge trimming portion that trims the fore-edge por- tion of the bound material, wherein the fore-edge trimming portion comprises the guide por- tions. 40 [0017] A trimmer according to the present application will be explained below with reference to the drawings. [0018] Referring to Fig. 1, a bound material will be ex- plained. [0019] The bound material 1 comprises a book block 51, and a cover 50 attached to the book block 51. The bound material 1 has a top edge portion 1a, a bottom edge portion 1b,a fore-edge portion 1c anda back portion 1d. The cover 50 comprises flap portions 50a adjacent to the fore-edge portion 1c of the bound material 1. For example, a brief summary of a content of the bound ma- terial, an author’s background description or things like that is described on the flap portions 50a at the side of the bookblock 51.In the embodiment,the cover50 com- prises a pair of flap portions 50a. However, the cover 50 may comprise only one of the flap portions 50a. [0015] The trimmer according to the present applica- tion can trim the fore-edge portion of the bound material exceptthe coverand thatcan beexcellentinproductivity and cost. Fig.2isa perspective viewshowing a trimmerbefore 55 Fig.1A isaplan view showing a bound materialhav- ing a cover attached to a book block. Fig. 1B is a side view of Fig. 1A. 50 45 [0016] BRIEF DESCRIPTION OF THE DRAWING EFFECT OF THE INVENTION [Bound material] DETAILED EXPLANATION OFTHE PREFERRED EM- BODIMENTS 3