11  EP 3 800 017 A1 12  7 2. A trimmer according to claim 1  wherein each of the guide portions isattached to each ofthe base portion 7. A trimmeraccording toanyone ofclaims1 to5 further comprisingafore-edge trimming portion thattrims the fore-edge portion of the bound material  wherein the fore-edge trimming portion comprises the guide portions. 1. A trimmer that trims a bound material which has a book block and a cover attached to the book block  the cover having flap portions adjacent to the fore- edge portionofthe bound material the trimmercom- prising: 6. A trimmer according to claim 4  further comprising: 5. A trimmer according to any one of claims 1 to further comprising a spring portion mounted be- tween the guide portion and the pressure portion  wherein the guide portions are connected with the pressure portion via the spring portion and are movable with respectto thepressure portion by the spring portion. 4. A trimmer according to any one of claims 1 to wherein  when the fore-edge portion of the bound material is trimmed by the trim cutter  the book block is projected from the cover  one end portions of the guide portions are contacted with the face and reverse surfaces of the project portion of the book block  the bound material is moved toward the guide por- tions  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. 3. A trimmer according to claim 1 or 2  wherein each of the guide portions is inclined relative to face and reverse surfaces of the book block  and the guide portions are widened toward the trim cutter. and the pressure portion. 1  The guide portion may have anarc-shaped cross section. 1  The driving mechanism 56 may be configured to move the table unit 3 toward the trim unit 4. And the driving mechanism 56 may be configured to move both the table unit 3 and the trim unit 4. 5 10 1  The guide portions 60  61 may be divided and awayfrom the baseportion 18 and thepressure por- tion 22. And  the guide portions 60  61 may be ar- ranged for movement in a direction close to or away from the bound material 1. 15 20 25 30 35 40 a table that positions the bound material placed thereon; a table unit that rotates the table in such a man- ner that the bound material is rotated to each of top  bottom  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  thebound materialismoved awayfromthe base portion and the pressure portion  the one end portions of the guide portions are contacted with the face and reverse surfaces of the project portion of the book block  the bound material is moved toward the guide portions  the guide portions are inserted between the bookblockand the coverso as to peelthe cover together with the flap portions up. a trim cutter that trims the bound material; a blade receiving portion that receives an edge of the trim cutter; a base portion and a pressure portion that nip and position the bound material; and a pair of guide portions arranged for movement in a direction close to or away from the bound material  wherein the guide portions are inserted between t book block and the coversoastopeelthecover togetherwith the flap portionsup whenthefore- edge portion of the bound material is trimmed by the trim cutter. 50 45 55 DESCRIPTION OF REFERENCE NUMBERS [0054] 1 bound material 50 cover 51 book block 51a projecting portion 50a flap portion 20 trim cutter 19 blade receiving portion 18 base portion 22 pressure portion 60  61 guide portion 60a  60b one end portion of guide portion 60b  61b other end portion of guide portion 62 spring portion 1a top edge portion of bound material 1b bottom edge portion of bound material 1c fore-edge portion of bound material Claims