Image forming apparatus

摘要

An image forming apparatus includes a first image forming unit that uses a first toner for a first toner image and a second image forming unit that uses a second toner for a second toner image, and transfers, a controller that controls the first image forming unit and the second image forming unit, having two control modes, a first print mode in which the first toner image and the second toner image are continuously transferred to the transfer medium; and a second print mode in which the first toner image is transferred thereafter, the transfer medium, on which the first toner image is formed, is passed through the second image forming unit without the second image forming unit performing image transfer. The controller performs control in such a manner that an amount of the first toner in the first print mode is greater than that in the second print mode.

主权项

1. An image forming apparatus comprising:
a first image forming unit that uses a first toner to form a first toner image and transfers the first toner image to a transfer medium that moves in a predetermined moving direction; a second image forming unit that is arranged on a downstream side from the first image forming unit in the movement direction of the transfer medium, uses a second toner to form a second toner image, and transfers the second toner image to the transfer medium; the second toner being characterized to be charged easier than the first toner is, a controller that controls the first image forming unit and the second image forming unit so that the first toner image and second toner image are layered on the transfer medium; the controller having two control modes;
a first print mode in which the first toner image and the second toner image are continuously transferred to the transfer medium by the first image forming unit and the second image forming unit so that the second toner image is formed on the first toner image above the transfer medium; anda second print mode that includes an operation in which the first toner image is transferred to the transfer medium by the first image forming unit and thereafter, the transfer medium, on which the first toner image is formed, is passed through the second image forming unit without the second image forming unit performing image transfer, wherein the controller performs control in such a manner that an amount of the first toner that is transferred from the first image forming unit in the first print mode is greater than that in the second print mode.