摘要:
A toner recycle control system capable of stably feeding a liquid developing solution with proper density to a liquid developing device using viscous liquid developing solution and feeding, after re−regulating to a proper density, the residual developing solution collected after a development and a transfer, comprising a buffer tank receiving and storing the liquid developing solution with a density regulated in a density regulating tank in addition to the density regulating tank for regulating the density of the developing solution by storing therein the collected developing solution and feeding therein condensed developing solution and carrier solution to re−feed, after collection and density regulation, the residual developing solution for development from a developing solution support body and the residual developing solution for transfer, as a developing solution, to the developing solution support body, wherein the liquid developing solution with a properly regulated density is fed from the buffer tank to the developing solution support body.
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.
摘要:
A liquid development electrophotographic apparatus using a liquid toner exhibiting nonvolatility and having a high viscosity and a high concentration as a liquid developer, in which the liquid developer is supplied in contact with a photosensitive drums (11-14) on which electrostatic latent images are formed, and toner particles of the liquid developer are adhered to the photosensitive drums (11-14) according to the electric fields produced between an intermediate transfer roller and the respective photosensitive drums (11-14) so as to form toner images, an intermediate transfer part is composed of the intermediate transfer roller (15) and an intermediate transfer belt (16) and used for transfer the toner images on the photosensitive drums onto the intermediate transfer belt, a transfer fixing part has a heater for heating and fusing the toner images transferred onto the intermediate transfer belt (16) at a contact portion in contact with a printing medium and fuse-transferring them onto the printing medium, and a developing part is disposed at the lower part of the apparatus. Therefore even if the liquid developer leaks, the printing medium and the intermediate transfer part do not stain.