LIQUID DEVELOPMENT FULL-COLOR ELECTROPHOTOGRAPHIC DEVICE

摘要

A developing unit uses liquid toner as a liquid developing solution to form toner images according to electric fields generated between it and photosensitive drums. An intermediate roller (15) receives transferred toner images according to electric fields between it and photosensitive drums. A transfer-fixing unit further transfers a toner image on the intermediate roller onto an intermediate transfer belt (16) and fusion-transfers it onto a printing medium. Photosensitive drums (11-14), provided for each of a plurality of color-toners, transfer toner images formed thereon onto the intermediate transfer roller one by one for subsequent overlapping. With the intermediate transfer roller kept at a ground level, voltages controlled according to electric characteristics specific to respective color toners on the plurality of photosensitive drums are applied to the drums to thereby produce electric fields required for transfers onto the intermediate transfer roller. In addition, a toner coagulation increasing device is provided that increases the toner coagulation of a toner image on the intermediate transfer roller so as to prevent the reverse-transfer of toner images, transferred previously on the intermediate transfer roller, onto the photosensitive drums.