Studies on the influence of kanban size in a JIT manu-
facturing system have been a popular topic over recent decades. Many researchers have focused
on finding the optimal number or size of kanbans in production systems. In fact, studies on the
JIT system can be classified broadly into two categories: (i) evaluations on the performance of JIT
systems in terms of system parameters such as make- span, inventory level, machine utilization and
carrying cost, etc.; (ii) comparison between the traditional Push-type and
kanban-based Pull-type manufacturing systems.