Method and apparatus for creasing a product folded along a fold line
AssigneeOce-Technologies B.V.
InventorsCornelis Jacobus Groenenberg, Maurice Johan Marie Bindels
Life of this patent
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Abstract
A creasing device for creasing a folded booklet on its fold line utilizing two creasing rollers which together form a creasing nip for rolling over the fold line of the booklet, the creasing nip pressing the booklet flat during a reciprocating movement of the creasing nip. During the creasing cycle, the booklet is enclosed on its fold line between two guide strips which extend between the creasing rollers and extend over the line of movement of the creasing nip.
Claims10
A method of creasing a product folded along a fold line so as to define a folded product, the method comprising:
- providing a creasing nip at the fold line,
- moving the creasing nip along the fold line in a first direction over the folded product in order to flatten the folded product, and
- moving the creasing nip in a second direction along the fold line antiparallel to said first direction and over the folded product in order to negate a shift in the fold of the folded product introduced by having moved the creasing nip in the first direction.
A device, for creasing a product folded along a fold line so as to define a folded product, the device comprising:
- nip-forming means for forming a creasing nip on the fold line and
- transport means for producing a relative movement between the formed creasing nip and the folded product,
- wherein the transport means are provided with reversing means which, after displacement of the creasing nip along the fold line over the folded product in a first direction, is operable to displace the creasing nip in the opposite direction along the fold line over the folded product such that a shift in the fold of the folded product introduced by having moved the creasing nip in the first direction is negated by the movement of the creasing nip in the opposite direction.
A printing apparatus comprising:
- a printing station,
- a collecting station,
- a folding and creasing station,
- a sheet-finishing station,
- a stapling station,
- a delivery station and
- sheet transport paths for selectively transferring products to said stations,
- wherein the creasing station is operable to crease said products at a fold line thereof and
- wherein the creasing station comprises
- nip-forming means for forming a creasing nip on the fold line and
- transport means for producing a relative movement between the creasing nip and the folded product,
- wherein the transport means are provided with reversing means which, after displacement of the creasing nip along the fold line over the folded product in a first direction, is operable to displace the creasing nip in the opposite direction along the fold line over the folded product such that a shift in the fold of the folded product introduced by having moved the creasing nip in the first direction is negated by the movement of the creasing nip in the opposite direction.
Dependencies are inferred from the claim text.