Patent ID: 8206073

Claim:
An apparatus, comprising: a perfect binder comprising a control device and a circulating clamp operating under control of the control device to transport the circulating clamp in the transport direction while a book block is clamped into the circulating clamp such that a back of the book block projects downward; a back pressing device that presses a casing or slip-fold against an adhesive-covered back of the book block; a flank pressing device that presses the casing or slip-fold against side flanks of the book block, wherein the back pressing device and the flank pressing device are operated synchronously with the timing of the circulating clamp of the perfect binder for conveying the book block; a first individual drive unit assigned to the flank pressing device and connected to the control device of the perfect binder; and a drive assigned to the back pressing device, the drive including a second individual drive unit and a third individual drive unit, each including a drive control, wherein the second individual drive unit includes a motor that drives the back pressing device approximately in the same direction as the transport direction of the book block, and the third individual drive unit includes a different motor that presses the back pressing device against the back of the book block.