抄録
Paper-like readability should be positioned as the most urgent target for Electronic Paper, when we consider the present absence of an electronic medium that provides comfortable reading. It is not clear how we should pursue readability; it remains open question as to why we do not like to read books on computer screens. We have recently focused on this theme and are now trying to determine how to achieve readability from our experiments. Our experimental results have shown that there is a large difference of the measured fatigue levels on the two media, display and paper, while there is only a small difference in terms of the measured efficiency. Another experiment has shown that we have a tendency to hurry up and finish incompletely at proofing task on a display. Our measurements of eye mark tracking during reading task have shown that our eyes tend to be too much fixed on a display, and that it can be considered as one of reasons of our eye fatigue at display tasks. Subjective evaluations for favorite reading style have shown that they prefer handheld style than medium fixed style at our reading test on current electronic book terminals.