A method of manufacturing a bound collection of leaves having a spine, the method comprising:
- forming a first plurality of leaves, each leaf of the first plurality of leaves including a first pattern of tabs distributed along a binding axis of that leaf;
- forming a second plurality of leaves, each leaf of the second plurality of leaves including a second pattern of tabs distributed along a binding axis of that leaf;
- assembling the first plurality of leaves and the second plurality of leaves to form a collection of leaves such that each binding axis of the first plurality of leaves and the second plurality of leaves is oriented parallel to a spine axis of the spine that is formed upon binding the collection of leaves;
- and
- binding the collection of leaves to form the bound collection of leaves having the spine by:
- for each leaf of the first plurality of leaves, binding that leaf within the bound collection by the first pattern of tabs of that leaf, and
- for each leaf of the second plurality of leaves, binding that leaf within the bound collection by the second pattern of tabs of that leaf;
- wherein each tab of the first pattern of tabs and the second pattern of tabs within the bound collection of leaves extends in a direction orthogonal to the binding axis of its leaf from within an unbound region of that leaf to a binding-side edge of that leaf, wherein each tab of the first pattern of tabs and the second pattern of tabs has a bound portion and an unbound portion in a direction orthogonal to the spine axis;
- wherein the first pattern of tabs differs from the second pattern of tabs within the bound collection of leaves along at least a portion of the spine axis;
- wherein each tab of the first pattern of tabs is spaced apart from one or more neighboring tabs of the first pattern of tabs by a gap length in a dimension parallel to the spine axis;
- wherein each tab of the second pattern of tabs is spaced apart from one or more neighboring tabs of the second pattern of tabs by a gap length in the dimension parallel to the spine axis;
- wherein one or more tabs of the second pattern of tabs have a tab length in the dimension parallel to the spine axis that is less than the gap length between two or more neighboring tabs of the first pattern of tabs;
- and
- wherein the one or more tabs of the second pattern of tabs having the tab length that is less than the gap length of the first pattern of tabs are aligned within the gap length between the two or more neighboring tabs of the first pattern of tabs along the spine axis.