Abstract: An image forming apparatus includes a transfer unit having a conducive roller member formed with a conductive elastic body on an outer peripheral surface of a shaft of the conductive roller member for transferring, to a recording medium, development images formed on an image carrier based on a transfer voltage applied thereto, a voltage application unit for applying the transfer voltage to the transfer unit; a voltage control unit controlling the transfer voltage to be applied from the voltage application unit to the transfer unit, and a temperature measuring unit measuring shaft, temperature of the conductive roller member, wherein the voltage control unit controls the transfer voltage applied to the transfer unit based on the shaft temperature measured with the temperature measuring unit.

Abstract: An image forming apparatus includes a transfer unit having a conducive roller member formed with a conductive elastic body on an outer peripheral surface of a shaft of the conductive roller member for transferring, to a recording medium, development images formed on an image carrier based on a transfer voltage applied thereto, a voltage application unit for applying the transfer voltage to the transfer unit; a voltage control unit controlling the transfer voltage to be applied from the voltage application unit to the transfer unit, and a temperature measuring unit measuring shaft, temperature of the conductive roller member, wherein the voltage control unit controls the transfer voltage applied to the transfer unit based on the shaft temperature measured with the temperature measuring unit.

Abstract: An image formation apparatus includes: image formation units each configured to form a developer image; an intermediate transfer body onto which the developer images formed by the respective image formation units are transferred; a secondary transfer member configured to transfer the developer images, which are transferred to the intermediate transfer body, onto a record medium using a voltage supplied to the secondary transfer member; and a voltage supply unit configured to supply a voltage to the secondary transfer member. Arrangement of the image formation units is changeable. Depending on the arrangement of the image formation units in a conveyance direction of the intermediate transfer body, the voltage supply unit changes a voltage to be supplied to the secondary transfer member.

Abstract: An image formation apparatus includes: image formation units each configured to form a developer image; an intermediate transfer body onto which the developer images formed by the respective image formation units are transferred; a secondary transfer member configured to transfer the developer images, which are transferred to the intermediate transfer body, onto a record medium using a voltage supplied to the secondary transfer member; and a voltage supply unit configured to supply a voltage to the secondary transfer member. Arrangement of the image formation units is changeable. Depending on the arrangement of the image formation units in a conveyance direction of the intermediate transfer body, the voltage supply unit changes a voltage to be supplied to the secondary transfer member.

Abstract: An image formation device comprises: a first image carrier for a first developer image; a second image carrier for a second developer image; an intermediate transfer body opposed to the first image carrier and the second image carrier; a first transfer unit to transfer the first developer image to the intermediate transfer body; a second transfer unit to transfer the second developer image onto the first developer image transferred onto the intermediate transfer body; a third transfer unit to transfer, to a recording medium, the first and second developer images transferred onto the intermediate transfer body; and a control unit to control a value of a voltage to be applied to each of the first and second transfer units, according to a type of the recording medium.

Abstract: An image formation device comprises: a first image carrier for a first developer image; a second image carrier for a second developer image; an intermediate transfer body opposed to the first image carrier and the second image carrier; a first transfer unit to transfer the first developer image to the intermediate transfer body; a second transfer unit to transfer the second developer image onto the first developer image transferred onto the intermediate transfer body; a third transfer unit to transfer, to a recording medium, the first and second developer images transferred onto the intermediate transfer body; and a control unit to control a value of a voltage to be applied to each of the first and second transfer units, according to a type of the recording medium.

Abstract: An image forming device has multiple image forming units that form developing agent images, an intermediate transfer member to which developing agent images are transferred from selected image forming units, and a transfer member for transferring the developing agent images from the intermediate transfer member to a recording medium, using a voltage supplied from a voltage supply unit. The voltage supply unit varies the voltage supplied to the transfer member, either before or after or both before and after the developing agent images are transferred from the intermediate transfer member to the recording medium, according to the number of selected image forming units or their disposition.

Abstract: An image forming device has multiple image forming units that form developing agent images, an intermediate transfer member to which developing agent images are transferred from selected image forming units, and a transfer member for transferring the developing agent images from the intermediate transfer member to a recording medium, using a voltage supplied from a voltage supply unit. The voltage supply unit varies the voltage supplied to the transfer member, either before or after or both before and after the developing agent images are transferred from the intermediate transfer member to the recording medium, according to the number of selected image forming units or their disposition.