| 摘要 |
An image-forming machine comprising image carrier means (6), electrostatic latent image forming means (8) for forming an electrostatic latent image on the image carrier means (6), developing means (20) for developing the electrostatic latent image on the image carrier means (6) into a toner image, transfer means (12) for transferring the toner image on the image carrier means (6) onto a sheet material, cleaning means (24) for removing the toner remaining on the image carrier means (6) after the toner image on the image carrier means (6) has been transferred onto the sheet material, and toner recycling means (26) for recycling the toner removed from the image carrier means (6) by the cleaning means (24) into the developing means (20). The developing means (20) includes a developing agent container (28) for containing a developing agent (68) that comprises the toner and carrier particles, developing agent application means (56) for applying the developing agent (68) in the developing agent container (28) onto the image carrier means (6), toner replenishing means (124) for replenishing the developing agent container (28) with the toner, toner concentration detection means (66) for detecting the toner concentration of the developing agent (68) contained in the developing agent container (28), and toner replenish control means (188) for controlling the operation of the toner replenishing means (124) by comparing a value detected by the toner concentration detection means (66) with a threshold value. <IMAGE> |
