Patent ID: 7529499
Filing Date: 2009-05-05
Classification: G03G

Abstract:
1. An image forming unit for forming an image on a recording medium supplied from a storage tray for storing the recording medium, wherein either a first storage unit or a second storage unit is to be attached to the image forming unit; the first storage unit includes a first storage tray having a first storage capacity, a first guide member guiding the first storage tray and a first storage frame supporting the first guide member; and the second storage unit includes a second storage tray having a second storage capacity larger than the first storage capacity, a second guide member guiding the second storage tray and a second storage frame supporting the second guide member; the image forming unit comprising: an image forming device that forms an image on the recording medium; a device frame that supports the image forming device; a first attaching portion comprising at least two holes which are provided in the device frame to which to attach the first storage frame; and a second attaching portion comprising the at least two holes and at least one additional hole, which are provided in the device frame to which to attach the second storage frame, wherein the first attaching portion when used alone only attaches the first storage frame, while the second attaching portion only attaches the second storage frame.