| 摘要 |
It is an object of the invention to prevent reduction in output speed in the case where toner or the like adhered to a transfer belt is transferred to a side of an image carrying body and cleaning is performed by a cleaning device on a side of the image carrying body. A toner image transfer apparatus is constituted by extending a transfer belt between a first transfer roller, which is brought into pressure contact with a photoreceptor, and a second transfer roller disposed away from the photoreceptor and on a downstream side in a sheet conveying direction, and a circumferential length of the transfer belt is set to be equal to or less than a spacing between sheets conveyed (sheet spacing D) such that, in the sheet spacing D, over which a sheet passes a transfer position and which a subsequent sheet reaches, a cleaning voltage is supplied to shift toner or the like, adhered to the transfer belt, to the photoreceptor to have the same removed by a cleaning device on a side of the photoreceptor. An entire circumference of the transfer belt enables using the sheet spacing D to perform cleaning, thus ensuring a favorable cleaning quality without reduction in output speed.
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