Patent ID: 6801175
Filing Date: 2004-10-05
Classification: B41J,G02F,G03G

Abstract:
An image forming apparatus comprising:a first image forming portion for forming an image on a normal image display medium; and a second image forming portion for forming an image on a reversible image display medium, wherein said second image forming portion for forming the image on said reversible image display medium is configured to form the image on the reversible image display medium of an electric field drive type by an electric field corresponding to the image to be formed, and said reversible image display medium of the electric field drive type includes dry developer contained in developer containing cell(s) formed between two substrates opposed to each other with a predetermined gap therebetween, and said dry developer contains at least two kinds of frictionally chargeable dry developer particles having different chargeable polarities and having different optical reflection densities.