9  EP 3 800 017 A1 10  spring portion 62 is mounted between the upper guide portion 60 and the pressure portion 22. [0043] The upper guide portion 60 is connected with the pressure portion 22 via the spring portion 62. As a result, the spring portion 62 is configured to have upper guideportion 60 movable with respect to the pres- sure portion 22. This point will be explained below. 5 contact surface 22a of the pressure portion 22 when the pressure portion 22 togetherwith the upperguideportion 60 is disposed on the peeling up position. [0049] The book block 51 is projected from the cover 50 at the fore-edge portion 1c of the bound material 1. The one end portion 61a of the lower guide portion 61 is contacted with the projecting portion 51a of the book block 51 when the pressure portion 22 together with the upperguide portion 60 are disposed on the non-pressing position.Then,the one end portion 60a oftheupperguide portion 60 is contacted with the projecting portion 51a of the book block51 when the pressure portion 22 together with theupperguide portion 60 are disposed on thepeel- ing up position. 10 [0044] Referring to Figs. 4 to 11, a trimming process and a peeling up process will be explained below. The top edge portion 1a, the fore-edge portion 1c and the bottom edge portion 1b of the bound material 1 trimmed in the trimming process, and the cover 50 to- getherwith the flap portions 50ais peeled up in the peel- ing up process. 15 [0050] The peeling up position may be decided on the basis of the previously measured value of the thickness Tofthe book block51.Thepeeling upposition isdecided in a way that a sensor (not shown) connected with the upper guide portion 60 senses that the one end portion 60a of the upper guide portion 60 is contacted with the projecting portion 51a of the book block 51. The spring portion 62 can absorb an error of the peeling up position of the upper guide portion 60. [0045] At first, as shown in Fig. 4, the table unit 3 is configured to rotate the table 10 in such a manner that the top edge portion 1a of the bound material 1 is dis- posed parallel to the trimming cutter 20 and on the top edgetrimming position.Then,as shown in Fig.7,the trim unit4 ismoved fromthe stand-byposition to the trimming position. Then, the pressure portion 22 together with the upper guide portion 60 is moved from the non-pressing position to the pressing position so as to nip and fix the bound material 1 over the cover 50. Then, as shown in Fig. 8, the trim cutter 20 is moved from the non-trimming position to the trimming position soasto trimthe top edge portion 1a (the book block 51 and the cover 50) of the bound material 1. 30 25 20 [0051] Then, as shown in Fig. 10, the trim unit 4 is moved from the stand-by position to the trimming posi- tion. As a result, the bound material 1 is moved in such a manner that the cover 50 is moved toward the guide portions 60, 61. Each of the guide portions 60, 61 is in- serted between the book block 51 and the cover 50 so as to peel the cover 50 together with the flap portions 50a up since each ofthe guide portions 60,61 is inclined in relative to the face and reverse surfaces of the book block 51. [0046] Next, as shown in Fig. 5, the table unit 3 is con- figured to rotate the table 10 in such a manner that the bottom edge portion 1b of the bound material 1 is dis- posed parallel to the trim cutter 20 and on the bottom edge trimming position. Then, similarly to the above de- scription, as shown in Figs.7 and 8,the pressure portion 22 together with the upper guide portion 60 nip and fix the bound material1 over the cover50,andthen the trim cutter20trimsthebottomedge portion 1b(the book block 51 and the cover 50) of the bound material 1. 35 40 45 [0052] Then,as shown in Fig. 11, the pressure portion 22 is moved from the peeling up position to the pressing position so as to nip and fix the bound material 1 (only the book block 51). The upper guide portion 60 is con- tacted with the book block 51 and is not moved by the spring 62 eventhough the pressure portion22 is moved. Then, the trim cutter 20 cuts the fore-edge portion 1c (only the book block 51) of the bound material 1. As a result, only the book block 51 except the cover 50 is cut, but the flap portions 50a are not cut. [0053] As described above,preferred embodiments of the present invention are explained. However, construc- tions of the present invention are not limited to the em- bodiments. The constructions of the present invention may be changed and modified as follows. [0047] Next, as shown in Fig. 6, the table unit 3 is con- figured to rotate the table 10 in such a manner that the fore-edge portion 1c of the bound material 1 is disposed paralleltothe trimcutter20 andonthe fore-edge trimming position. Then, differently from the above description, as shown in Fig.9,the pressure portion 22 togetherwith the upper guide portion 60 is moved from the non-pressing position to a peeling up position while the trim unit 4 is stopped at the stand-by position. 50 [0048] The peeling up position is disposed between the non-pressing position and the pressing position. The peeling up position is decided on the basis of the thick- ness T of the book block 51. The one end portion 61a of the lower guide portion 61 is positioned so as to aligned with a contact surface 18a of the base portion 18. The one end portion 60a of the upper guide portion 60 is positioned closer to the bound material 1 than a 55 be 1  The trimmer may not be the three-side trimmer. That’s to say, an operator may rotate the bound ma- terial1 by oneselfso as to dispose the boundmaterial 1 on each oftop, bottom and fore-edge trimming po- sitions. 1  The trimmer may be called as a fore-edge trim- mer, which can convey the bound material 1 toward the trimming portion at which the fore-edge portion of the book block except the cover is trimmed. 6 [Trimming process and peeling up process]