開発と研究
直交表を利用した使用者によるコピー機の機能評価
2001 年 9 巻 1 号 p. 31-36
詳細
2001 年 9 巻 1 号 p. 31-36
In order to efficiently detect the bugs of software, orthogonal arrays have been proposed and used as a tool in Quality Engineering. In this approach, all functions in the software are considered as signals. Those signals are assigned to an orthogonal array for functional evaluation. Based on such approach, an idea was brought up that tile same approach might be applied for the areas other than software. In this study, a trial was made to evaludte the functions of a copy machine.
The functions of a copy machine such as enlargement or reduction were assigned to an L18 orthogonal array assignals. Copying was conducted according to the conditions of each run in the array. The copied image was evaluated and 0 and 1 type data were collected. The items used for evaluation refect the user's request, such as "the back page image of the original was noticed", "color uniformity" or "unclear outlines". Each item was analyzed separately. One (1) was used as a response for any problem noticed, The analysis showed that the significant effects in each copy machine was different. As a conclusion, it is possible to find a suitable copy machine by setting up the evaluation items that reflect the user's objectives for experiment.
