| 摘要 |
The image forming apparatus includes a halftone processing section that executes halftone processing having a halftone processing period, a signal add-on section that adds the add-on signals on the input image signals subjected to the halftone processing, a position information acquisition section that acquires position information to determine a relative position of halftone dots by the halftone processing and the add-on signals in a first image area, the first image area is based on a common multiple of the halftone processing period and a minimum interval of the add-on dots, and the position information preventing the add-on signals added by the signal add-on section from crossing over the halftone dots, and an add-on control section that continues or repeats add-on control processing of the add-on signals, executed based on the acquired position information, in a second image area based on the common multiple and consecutive from the first image area.
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