2002 年 10 巻 3 号 p. 118-126
The transfer belt drive system is an important system used for the electro-photographic systems, copying machines or printers. It is important in this system that the driving direction be robust alongside with the stable driving speed. If the driving speed and direction is unstable, the belt generates stress and causes cracking, resulting a poor image quality. But the use of a stronger belt to stabilize the speed and direction will result in cost increase. Parameter design was introduced to find the most stable driving function by varying control factor levels only, while maintaining the predetermined cost level. As a result of the parameter design, the belt driving efficiency was greatly improved. The objectives of applying parameter design is to maintain direct manufacturing cost and reducing indirect cost by the reduction of development cycle time, which was accomplished from the results of this study. The development cycle time was reduced by a fraction of ten.