A biological tissue collection device is provided having a housing with a fluid-retaining inner chamber adapted to retain a bioimplantable, fluid permeable tissue scaffold. Provided for the connection between the bearing journal and the reel core are clamping webs which are extended laterally and take up a connection with the inner side of the reel core in a non-positive andor positive-locking manner. In the memory, a plurality of directory entries are allocated to a single file. The first alignment film, the liquid crystal layer and the bias angle have a relationship of\u22121. The switching unit switches the activation mode from the first activation mode to the second activation mode when the amount of total power consumption stored in the storage unit is equal to or more than a first threshold value. In this way, the operation of a shared printer system is realized.