Method and apparatus for roughening a book block spine formed of

Details Method and apparatus for roughening a book block spine formed of Method and apparatus for roughening a book block spine formed of

1997-03-25

2000-06-20

Pitts, Andrea L.

Bookbinding: process and apparatus

Process

83355, 83876, 1441361, 407 35, 407 56, 412 6, 412 16, B42B 4300

Patent

active

060770163

ABSTRACT:
An apparatus for roughening a surface of a book block spine formed of a plurality of individual printed sheets clamped together. The apparatus includes a roughening tool which has a tool bit holder having a rotary axis and a radial face; a plurality of cutter tool bits mounted in a circular array on the tool bit holder and projecting axially from the radial face and together defining a cutting plane; and a drive for rotating the tool bit holder about the rotary axis. The apparatus further includes an arrangement for effecting a relative movement between the book block spine and the roughening tool in a direction of displacement; and an arrangement for setting the roughening tool relative to the book block spine such that the cutting plane forms an acute angle with the direction of displacement, whereby arcuate markings cut simultaneously into the surface of the book block spine along diametrically opposite portions of the circular array have unlike depths.

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Alfred Furler, "Technologie der Klebebindung, Materialien Klebstoffe Produktionsmittel", Dec. 1971, pp. 170-172.

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