Patent ID: 7381000
Filing Date: 2008-06-03
Classification: B41J,G02F

Abstract:
1. An electronic paper system for describing display patterns on electronic paper, the electronic paper system comprising: a first writing head and a second writing head that describe display patterns on the electronic paper; and a pair of erasing heads, at least one of the erasing heads having a plurality of erase pixel electrodes that erase patterns on the electronic paper, at least one of the erasing heads being independently actuated to form electric fields, the first writing head having a plurality of pixel electrodes which are independently actuated to form electronic fields, and the second writing head having a common electrode that is formed for the plurality of pixel electrodes of the first writing head; the electronic paper is introduced between the first writing head and the second writing head; a voltage level of the common electrode is switched on a time basis between a maximum voltage level applied to the plurality of pixel electrodes and a minimum voltage level applied to the plurality of pixel electrodes.