Abstract: An image forming device according to an aspect comprises: a photoconductive drum; a developing roller opposed to the photoconductive drum; a developer container; a cartridge; a second portion; and a second terminal. The cartridge comprises: a cartridge frame; a memory unit; a first portion disposed at an upstream portion in a vicinity of an upstream end in an attachment direction of the cartridge frame; and a first terminal disposed at least a part of the first portion and electrically connected to the memory unit. The second terminal is disposed at least a part of the second portion to contact with the first terminal and electrically connected to a controller disposed in the main body. One of the first portion and second portion receives the other of the first portion and second portion.

Abstract: An image forming apparatus includes: an image carrier that carries a developer image; a transfer member that transfers the developer image carried on the image carrier onto an image forming surface of a recording medium being conveyed; a fixation member that is disposed downstream of the transfer member in a conveyance direction of the recording medium, and fixes the developer image transferred on the recording medium; a first member that is disposed between the transfer member and the fixation member to face the image forming surface of the recording medium; and a second member that is disposed between the transfer member and the fixation member to face a non-image forming surface that is opposite the image forming surface, wherein the first member is provided with a first electrically-conductive member having an electric conductivity and being grounded.

Abstract: A process cartridge includes: an image bearing body; a brush member; a brush holder member; and a tension imparting portion. The image bearing body bears an image on its surface. The brush member removes deposits adhered to the surface of the image bearing body. The brush holder member extends along a longitudinal direction of the image bearing body and holds the brush member. The tension imparting portion imparts tension to the brush holder member in the longitudinal direction thereof.

Abstract: During printing on a thick paper, a Scorotron charger disposed upstream of a developing roller in a drum rotational direction charges a photosensitive drum to about 1000 V. Then a transfer roller disposed downstream of the developing roller lowers the potential to about 80 V. The transfer bias is turned off at the end of printing at T1 and does not lower the surface potential after this. When the surface of the drum opposite the transfer roller reaches a position opposite the Scorotron charger at T2, a DC motor and a charging bias are turned off. The surface potential of the drum that passes opposite the developing roller remains at about 400 V and is higher than developing roller potential until the photosensitive drum comes to a complete stop after idling at T3. This prevents the developing agent from adhering to the photosensitive drum.