a first terminal electrically connected to the electric circuit a photosensitive drum and a developer cartridge comprising a developing roller developing frame having a pressed portion memory unit and second terminal the front cover may include a pressing portion configured to press the pressed portion of the developing frame in a direction from the developing roller toward the photosensitive drum and wherein the second terminal faces to the front cover when the front cover is in the closed position application_number US 201715429405 A description hereinafter an embodiment of the invention will be described in detail with reference to the attached drawings in the drawings fig1 is a side cross sectional view illustrating an image forming device and fig2 is a perspective view illustrating a photoconductor cartridge and a developer cartridge in the following description the right side in fig1 is defined as a front and the left side is defined as a rear also regarding directions of a process cartridge 30 a photoconductor cartridge 31 and a developer cartridge 33 which will be described later the following description refers to directions in a state where they are attached to an image forming device see fig1 as shown in fig1 an image forming device 1 includes a feeder unit 4 that feeds a sheet 3 into a main casing 2 main body and an image forming unit 5 that forms an image on the fed sheet 3 a front cover 11 opening and closing member that can be freely opened and closed is disposed at a front portion of the main casing 2.