| 摘要 |
The image forming apparatus forms an image on a recording medium by using an ink and a treatment liquid. The ink contains coloring material, and the treatment liquid contains a component which causes the coloring material to aggregate. The image forming apparatus includes: a treatment liquid deposition device which deposits the treatment liquid onto the recording medium; an ink droplet ejection device which ejects and deposits droplets of the ink onto the recording medium; a plurality of heat fixing devices which perform fixing process of the image formed on the recording medium by removing stepwise a solvent component contained in the image, the heat fixing devices being arranged sequentially in a conveyance direction of the recording medium; and a fixing control device which controls the fixing process with the heat fixing devices so as to satisfy the following condition: if Wi-1>50, then Wi-1-Wi<=20, where n is a number of the heat fixing devices, Wi (%) is a solvent content rate of the image after the fixing process has been carried out by one of the heat fixing devices in an i-th position (where i is a natural number not larger than n) from an upstream side in the conveyance direction of the recording medium, and W0 (%) is a solvent content rate of the image before carrying out the fixing process by a first one of the heat fixing devices from the upstream side in the conveyance direction of the recording medium.
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