Patent ID: 9383716
Filing Date: 2016-07-05
CPC Classification: G03G

Claim Text:
1. A shutter assembly which is installed at a cartridge assembly for an image forming apparatus to control an introduction of a developer, the cartridge assembly for an image forming apparatus comprising: a drum unit provided with a waste toner conveying means which conveys waste toner collected from a surface of a photosensitive drum to one side; a developing unit connected with the drum unit, configured to receive the waste toner collected from the drum unit, and having a developer discharging means to discharge a developer therein to an outside; and a developer collecting unit integrally formed with the drum unit at one side of the drum unit, and configured to collect the developer discharged by the developer discharging means of the developing unit, wherein the drum unit comprises a toner injecting means which connects the waste toner conveying means, a new toner supply unit and the developing unit so that the waste toner conveyed by the waste toner conveying means and new toner supplied from the new toner supply unit are injected together into the developing unit; wherein the shutter assembly comprises a developer collecting member formed at a side surface of the develop collecting unit, and having a developer collecting hole; a developer discharging member rotatably provided at an end of the developer discharging means, and having a developer discharging hole at a side surface thereof; and a rotating member rotatably installed at the side surface of the developer collecting unit, and configured to allow the developer discharging hole of the developer discharging member to be selectively in communication with the developer collecting hole.