US Patent 7942514 Keying elements for solid ink loader

Insertion elements can be used to provide keying features for ink loaders. Such elements connect to ink stick receptacles in the loader. The insertion elements can provide a border to a non-integer number of edges of the receptacles and be shaped to complement at least a portion of the perimeter of an ink stick. A solid ink loader that includes at least one feed channel for receiving ink sticks can use the insertion elements. The insertion elements can be part of a keying system that includes keying features supplied by both the insertion element and the receptacle itself. Multi-component key plate systems can be used as well.