| 摘要 |
An image forming apparatus includes a color image forming portion for forming a color toner image on an image bearing member; a transparent image forming portion for forming a transparent toner image on the image bearing member. The color image forming portion is capable of forming a test color toner image on the image bearing member, and the transparent image forming portion is capable of forming a test transparent toner image on the image bearing member. The apparatus further includes a detecting portion for detecting a density of each of the test color toner image and the test transparent toner image; and a control portion for controlling an image forming condition for an image to be formed on a recording material, on the basis of a result of detection of the density of each of the test color toner image and the transparent toner image. The test transparent toner image and the test color toner image are formed on the image bearing member by the transparent image forming portion and the color image forming portion between an operation for forming the image to be formed on the recording material and a subsequent operation for forming the image to be formed on the recording material. A frequency of formations of the test transparent toner images is lower than that of the formations of the test color toner images.
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