Abstract: An image forming apparatus includes: a housing; a drawer movable between an inner position accommodated within the housing and an outer position exposed to an outside of the housing; a drum cartridge including a photosensitive drum and a drum frame; a developing cartridge; and a pressing member for pressing the drum frame. The drum frame includes: first and second side frames supporting first and second end portions of the photosensitive drum, respectively; and an upper frame connecting upper end portions of the first and second side frames to each other. In a state where the drum cartridge to which the developing cartridge has been attached is attached to the drawer and the drawer is in the inner position, the developing cartridge is positioned between the photosensitive drum and the upper frame, and the pressing member is positioned above the upper frame to press the upper frame downward.

Abstract: An image forming apparatus includes: a housing; a drawer; and first and second process cartridges attachable to the drawer. The first process cartridge includes a first drum cartridge including a first photosensitive drum and a first developing cartridge including a first developing roller. When attached to the first drum cartridge, the first developing cartridge is movable between a first position where the first developing cartridge is detachable from the first drum cartridge and a second position where the first developing cartridge is not detachable from the first drum cartridge. In a state where the first and second process cartridges are attached to the drawer at positions adjacent to each other, the first developing cartridge comes into contact with the second process cartridge during movement of the first developing cartridge from the second position to the first position before the first developing cartridge reaches the first position.

Abstract: An image forming apparatus includes: a housing; a drawer, and first and second process cartridges attachable to the drawer. The first process cartridge includes a first drum cartridge including a first photosensitive drum and a first developing cartridge including a first developing roller. When attached to the first drum cartridge, the first developing cartridge is movable between a first position where the first developing cartridge is detachable from the first drum cartridge and a second position where the first developing cartridge is not detachable from the first drum cartridge. In a state where the first and second process cartridges are attached to the drawer at positions adjacent to each other, the first developing cartridge comes into contact with the second process cartridge during movement of the first developing cartridge from the second position to the first position before the first developing cartridge reaches the first position.

Abstract: An image forming apparatus includes: a housing; a drawer; and first and second process cartridges attachable to the drawer. The first process cartridge includes a first drum cartridge including a first photosensitive drum and a first developing cartridge including a first developing roller. When attached to the first drum cartridge, the first developing cartridge is movable between a first position where the first developing cartridge is detachable from the first drum cartridge and a second position where the first developing cartridge is not detachable from the first drum cartridge. In a state where the first and second process cartridges are attached to the drawer at positions adjacent to each other, the first developing cartridge comes into contact with the second process cartridge during movement of the first developing cartridge from the second position to the first position before the first developing cartridge reaches the first position.

Abstract: An image forming apparatus includes: a housing; a drawer movable between an inner position accommodated within the housing and an outer position exposed to an outside of the housing; a drum cartridge including a photosensitive drum and a drum frame; a developing cartridge; and a pressing member for pressing the drum frame. The drum frame includes: first and second side frames supporting first and second end portions of the photosensitive drum, respectively; and an upper frame connecting upper end portions of the first and second side frames to each other. In a state where the drum cartridge to which the developing cartridge has been attached is attached to the drawer and the drawer is in the inner position, the developing cartridge is positioned between the photosensitive drum and the upper frame, and the pressing member is positioned above the upper frame to press the upper frame downward.

Abstract: An image forming apparatus includes a housing, a top cover having an opening, a process cartridge attachable to the housing, a toner cartridge attachable to the process cartridge, and an interlocking mechanism. The top cover is pivotally movable between a first position closing the opening and a second position opening the opening. In a state where the toner cartridge is attached to the process cartridge, the toner cartridge is pivotally movable between an attachment/detachment position where the toner cartridge is attachable to and detachable from the process cartridge; and a fixed position where the toner cartridge is fixed to the process cartridge. The interlocking mechanism is configured to pivotally move the toner cartridge to the attachment/detachment position when the top cover is moved to the second position, and to pivotally move the toner cartridge to the fixed position when the top cover is moved to the first position.

Abstract: A knife having scales includes a U-shaped handle having a first shaft and a second shaft, a first fixed knife, which is coupled with the handle, a second movable knife, which is able to connect to and move along the first shaft in order to divide an object by a desired angle, and a protractor, which is possible to be put on the first shaft, and is used as a guide for dividing the object into desired numbers, each of which is equal amount, wherein scales are shown on the protractor, and wherein the scales are grouped in accordance with the number that the object is divided.