Image-on-Image Color Process Using Liquid Toner

Abstract

The Image-on Image (IOI) color process,in which color images are superimposed on a single photoreceptor and then transferred to the paper at once,possesses capabilities for realizing a high speed,high quality, and compact color printer. However,in the IOI processes using dry toners,there are unavoidable problems that make it difficult to obtain high quality color images. TOSHIBA found that,using liquid toners,these issues are completely resolved and high quality color images comparable to offset prints are realized. In this paper, liquid toner IOI process is proved to be an excellent color process by comparing development characteristics and color image qualities between IOI processes using liquid and dry and liquid toners. The results of theoretical analyses agree with these experimental data. Furthermore, two kinds of prototype printing machines using liquid toner IOI process are introduced.