Photos: E-paper chase

At the Tokyo convention on Wednesday, Hitachi employee Chizuru Namiki displays A4-size, 4,096-color electric paper. "Albirey" is 3.7-millimeters thick and consumes an "ultralow" amount of electricity.

Hitachi plans to market Albirey this fall as an information display medium that could replace paper. The company says it would work well for the still frames of trains, offices and shops.

Photo by Yoshikazu Tsuno/AFP/Getty Images