US 7,114,864 B2 · Electronic paper printer

Abstract

An electronic paper printer is provided that is capable of describing display patterns properly and definitely on rewritable electronic paper. An electronic paper printer 1 has a describing head 3 for describing display patterns on electronic paper 2 capable of having display patterns rewritten thereto and erased therefrom, using electrophoresis, an erasing head 4 for erasing display patterns described on the electronic paper 2, a drive mechanism (not shown) for driving the describing head 3 and the erasing head 4 so that they turn, and a conveyor mechanism (not shown) for conveying the electronic paper 2. The describing head 3 is configured by a pair of drums 31 and 32 supported so that they freely turn. The erasing head 4 is configured by a pair of drums 41 and 42 supported so that they freely turn.

Claims8

Dependent claims

An electronic paper system for describing display patterns on electronic paper, comprising:

a pair of drum shaped writing heads for describing display patterns on said electronic paper, both of said writing heads having a plurality of pixel electrodes which are independently actuated to form electronic fields and said pixel electrodes of each writing head are arranged so as to correspond to each other;
and
controlling means for applying voltage for display patterns to both corresponding pixel electrodes of each writing head so as to directly overwrite the display pattern on said electronic paper.

Dependencies are inferred from the claim text.

Electronic paper printer

Life of this patent

Electronic paper printer

Life of this patent

Abstract

Claims8