Patent ID: 6951531

Claim:
A method for embossing covers ( 3 ) for a book block ( 2 ), whereby at least two grooves ( 5 , 6 ) delimiting the spine of the book are produced in the cover by means of an embossing die, comprising for adjusting the spacing between the grooves, using an automatic set of book block pincers ( 50 ) comprising at least one movable stop face ( 52 ); and using the value of the thickness of the book block ( 2 ) determined by means of the automatic set of book block pincers ( 50 ) for automatically adjusting the spacing (d) between the grooves ( 5 , 6 ); and wherein the set of book block pincers ( 50 ) is first opened to the maximum value and subsequently closed for receiving a book block ( 2 ), whereby in the course of the opening and closing process, the movement of the at least one movable stop face ( 52 ) or the required time is measured by and stored in a control unit, and the difference between the two values is computed and stored and the stored value is digitally transmitted to the control device for the embossing die ( 10 ).