Apparatus for abrading an end of a stack of sheets to be bound
AssigneePowis Parker Inc.
InventorsKevin P. Parker, Thomas M. Young
Life of this patent
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Abstract
An apparatus to facilitate the binding of sheets using heat activated adhesives, with the sheets having coatings that resist binding. A stack of sheets is abraded prior to binding, with the apparatus gripping the stack so that a stack end to be bound is exposed. An abrading head containing a plurality of reciprocating pins is positioned so that pins can be controlled to repeatedly strike the stack end along the length of the end. This action results in abrading the stack end thereby producing relatively long fibers from the coated sheets that absorb the binder strip adhesive thereby achieving a strong bind notwithstanding the adhesive-resistant coating.
Claims21
Apparatus for abrading a binding end of a stack of sheets, with the binding end having a length L and width W, said apparatus comprising:
- a bracket mechanism including
- (a) a first bracket component having first opposed surfaces for gripping the stack of sheets at a first location on the stack displaced from the binding end, with a distance between the first surfaces when gripping the stack being substantially equal to the width W;
- (b) a second bracket component having second opposed surfaces for guiding the stack of sheets at a second location on the stack intermediate the first location and the binding end, with a distance between the second opposed surfaces when the first bracket component is gripping the stack of sheets being greater than W;
- an abrading head including
- (a) a plurality of strike pins;
- (b) a plurality of electromechanical drivers, each electromechanical driver associated with each of the strike pins, with each driver operating to drive each of the associated strike pins between a retracted position and an extended position;
- an abrading head positioner for selectively positioning the abrading head along the length L of the binding end so that, when the first bracket component is gripping a stack, the strike pins will contact the binding end when the strike pins are in the extended position;
- and
- a controller configured to cause the abrading head positioner to move the abrading head in a direction along the length L of the binding end when the first bracket component is gripping the stack and to selectively activate the electromechanical drivers so that the strike pins repeatedly move between the retracted and extended positions and so that the strike pins repeatedly contact the binding end along the length L of the binding end when the first bracket component is gripping the stack.
Apparatus for abrading a binding end of a stack of sheets, with the binding end having a length L and width W, said apparatus comprising:
- a bracket mechanism including a first bracket component having first opposed surfaces for gripping the stack of sheets;
- an abrading head including
- (a) a plurality of strike pins;
- (b) a plurality of electromechanical drivers, each electromechanical driver associated with each of the strike pins, with each driver operating to drive the each of the associated strike pins between a retracted position and an extended position;
- an abrading head positioner for selectively positioning the abrading head along the length L of the binding end so that, when the first bracket component is gripping a stack, the strike pins will contact the binding end when the strike pins are in the extended position;
- and
- a controller configured to cause the abrading head positioner to move the abrading head in a direction along the length L of the binding end when the first bracket component is gripping a stack and to selectively activate the electromechanical drivers so that the strike pins repeatedly move between the retracted and extended positions and so that the strike pins repeatedly contact the binding end along the length L of the binding end.
The apparatus of Clair 17 wherein the abrading head is part of a dot matrix printer head.
Dependencies are inferred from the claim text.