| 摘要 |
PURPOSE:To simplify the structure of a carrying system where a liquid toner is sprayed to a photosensitive face, by providing the first flow passage through which only the toner passes, the second flow passage through which only a gas passes, and a valve which closes the second flow passage when the toner is sent with pressure. CONSTITUTION:A mask 12 of a body 11 of a developing head has an aperture 12a having a size corresponding to a farme to be developed of a photosensitive material 13, and a liquid toner 14 is sprayed through this aperture 12a to develop a latent image, and air is sprayed to a photosensitive face 13a after development to squeeze the toner. The liquid toner 14 is sucked from a tank 15 by a pump 16 and is carried from the first flow passage 18 through a valve 17. The first flow passage 18 is connected to the second flow passage 19 by the valve 17, and the air pressure-feeding from the second flow passage 19 is stopped by the valve 17 when the toner 14 is fed with pressure, and air carried from the second flow passage 19 by an air pump 20 is sent to the aperture 12a through the valve 17 when the toner 14 is not fed with pressure. |
