Book trimming apparatus
AssigneeIBIS Integrated Bindery Systems Ltd.
InventorsJohn Cracknell, Mark Firth, John O'Brien, Martin Brewster
Life of this patent
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Abstract
The book trimming apparatus includes guides which direct a collated and, optionally, bound book to a fore-edge trimming station. The book trimming apparatus further includes a transfer station and a side-edge trimming station. For both the fore-edge trimming station and the side-edge trimming station in each case the book is orientated so that the edge to be trimmed is arranged substantially parallel to the direction of motion of the book. The automated book trimming apparatus is particularly suited for use in combination with collation and binding stations in in-line book manufacture.
Claims18
1-38. (canceled)
A method of trimming a stack of collated sheets folded at a spine along at least one edge perpendicular to the spine, the method comprising the steps of:
- (a) providing a spine clamp with profiled spine-engaging surface above the stack in the vicinity of the edge to be trimmed;
- (b) moving the clamp towards the stack wherein the profile of the clamp is such that the spine of the stack is engaged first at its apex, which is displaced towards a knife bed plate;
- (c) continuing depressing the clamp such that the stack is engaged progressively as it thickens, thereby deforming the spine, until the deformed spine is compressed onto the bed plate;
- and
- (d) trimming the edge of the clamped stack.
A method of trimming a stack of collated sheets folded at a spine, the method comprising the steps of:
- (a) locating the stack on a knife bed plate;
- (b) deforming the spine of the stack, by displacing its apex first towards the knife bed plate and then progressively displacing thicker portions of the spine;
- (c) holding the deformed spine such that its surface is substantially flat against the bed plate;
- and
- (d) cutting the stack along an edge perpendicular to the spine whilst supporting said deformed spine on the bed plate.
Dependencies are inferred from the claim text.