Perforator

A method comprising:

• moving a medium between and relative to both a first rotatable member, supporting a first anvil, and a second rotatable member, supporting a first blade, to selectively position one of a continuum of portions of the medium relative to the first anvil and the first blade;
• perforating the medium between the first anvil and the first blade, wherein the first rotatable member is coupled to a second blade and wherein the second rotatable member is coupled to a second anvil, the method further comprising:
• rotating the first rotatable member in a clockwise direction while concurrently rotating the second rotatable member in a counterclockwise direction;
• and
• rotating the first rotatable member in the counterclockwise direction while concurrently rotating the second rotatable member in the clockwise direction.

A method comprising:

• providing a media path extending between a first rotatable member supporting a first anvil and one of a second anvil and a first blade and a second rotatable member opposite the first rotatable member and supporting a second blade and the other of the second anvil and the first blade;
• rotating the first rotatable member to a first angular position in which the first anvil and said one of the second anvil and the first blade project from the first rotatable member towards the media path in directions oblique to a plane of the media path between the first rotatable member and the second rotatable member such that the first anvil and said one of the second anvil and the first blade both terminate prior to reaching the media path;
• rotating the second rotatable member to a second angular position in which the second blade and said other of the second anvil and the first blade project from the second rotatable member towards the media path in directions oblique to the plane of the media path between the first rotatable member and the second rotatable member such that the second blade and said other of the second anvil and the first blade both terminate prior to reaching the media path;
• moving a medium between along the media path and relative to both the first rotatable member and the second rotatable member while the first rotatable member is in the first angular position and while the second rotatable member is in the second angular position to selectively position one of a continuum of portions of the medium between the first rotatable member and the second rotatable member such that a line intersecting rotational axes of the first rotatable member and the second rotatable member and extending perpendicular to the media path intersects said one of the continuum of portions of the medium;
• and
• rotating the first rotatable member in a clockwise direction from the first angular position and the second rotatable member in a counterclockwise direction from the second angular position to bring the first anvil and the second blade into engagement with one another to perforate said one of the continuum of portions of the medium.

A method comprising:

• moving a medium between and relative to both a first rotatable member, supporting a first structure, and a second rotatable member, supporting a first blade, to selectively position one of a continuum of portions of the medium relative to the first structure and the first blade, wherein the first rotatable member includes consecutive anvils, including a first anvil and a second anvil, without any blade between the first anvil and the second anvil along a perimeter of the first rotatable member, and consecutive blades, including a first blade and a second blade, without any anvil between the first blade and the second blade along the perimeter of the second rotatable member;
• perforating the medium between the first structure and the first blade;
• providing a media path extending between the first rotatable member and the second rotatable member;
• rotating the first rotatable member to a first angular position in which the first structure projects from the first rotatable member towards the media path in a first direction oblique to a plane of the media path between the first rotatable member and the second rotatable member such that the first structure terminates prior to reaching the media path;
• rotating the second rotatable member to a second angular position in which the first blade projects from the second rotatable member towards the media path in second directions oblique to the plane of the media path between the first rotatable member and the second rotatable member such that the first blade terminates prior to reaching the media path;
• driving the medium between and relative to both the first rotatable member in the first angular position and the second rotatable member in the second angular position without any blade and any corresponding structure of either of the first rotatable member or the second rotatable member perforating media therebetween as the media is being driven relative to both the first rotatable member and the second rotatable member;
• and
• rotating the first rotatable member in a clockwise direction from the first angular position and the second rotatable member in a counterclockwise direction from the second angular position to bring the first structure and the first blade into engagement with the medium to perforate the medium at a selected one of a continuum of locations along the medium.