| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electronic paper capable of preventing the production of a copy by a copying device. <P>SOLUTION: This electronic paper 10 has a display part 110, a display information storage part 150 for storing display data to be displayed in the display part 110 and a copyright flag showing that the display data has a copyright, and a detection means such as an optical sensor 130 for detecting the production of copy. When the detection means detects the production of copy while the display data with the copyright flag is displayed in the display part 110, the display in the display part 110 is changed. <P>COPYRIGHT: (C)2010,JPO&INPIT |
