Patent ID: 7505707
Filing Date: 2009-03-17
Classification: G03G

Abstract:
1. An image forming unit for forming an image on a recording medium supplied from a storage unit that stores the recording medium, the image forming unit comprising: a feed roller that feeds the recording medium from the storage unit; an image forming device that forms an image on the recording medium fed by the feed roller; a plurality of device frames, each of the device frames being formed in a U-shape and comprising a plate-like member that is attached to the image forming device and two arm portions that extend at right angles away from the plate-like member, a lower arm portion of each of the device frames comprising a plurality of first attaching portions and a plurality of second attaching portions; a discharge tray that is provided above the image forming device from which the recording medium being formed with the image thereon is discharged; a discharge roller that discharges the recording medium being formed with the image onto the discharge tray, the first storage unit comprising a plurality of first frames, each of the first frames being formed in a U-shape and comprising a guide member and two arm portions that extend at right angles away from the guide member, and a first storage tray which has a first storage capacity and is slidably attached to the guide members, and the second storage unit comprising a plurality of second frames, each of the second frames being formed in a U-shape and comprising a guide member and two arm portions that extend at right angles away from the guide member, and a second storage tray which has a second storage capacity that is larger than the first storage capacity, the second storage tray being slidably attached to the guide members of the second storage unit, and wherein the discharge roller discharges the recording medium in a same direction as a direction in which the first storage tray and the second storage tray slides out of the image forming unit; wherein if the first storage tray is selected, the first attaching portions fixedly attach the lower arm portions of the device frames to upper arm portions of the first frames of the first storage unit; and if the second storage tray is selected, both the first attaching portions and the second attaching portions fixedly attach the lower arm portions of the device frames to upper arm portions of the second frames of the second storage unit.