ONE WAY COMPATIBILITY KEYING FOR SOLID INK STICKS.

摘要

A plurality of ink sticks for use in phase change ink imaging devices comprises a first ink stick configured for insertion through an insertion opening of an ink loader for a first phase change ink imaging device and configured for insertion through an insertion opening of an ink loader for a second phase change ink imaging device. The plurality of ink sticks also comprises a second ink stick configured for insertion through the insertion opening of the ink loader for the second phase change ink imaging device and configured to be excluded from insertion through the insertion opening of the ink loader for the first phase change ink imaging device.