Patent ID: 7062203
Filing Date: 2006-06-13
Classification: G03G

Abstract:
1. A developing unit of a liquid electrophotographic image forming apparatus, the developing unit comprising: a developing roller adapted to supply ink to a photosensitive medium on which an electrostatic latent image is formed, to develop the electrostatic latent image; an ink storage unit adapted to store ink to be supplied to the developing roller; an ink cartridge adapted to be installed in the ink storage unit, and to be opened or closed and to supply ink to the ink storage unit; wherein the ink cartridge comprises a cartridge sleeve rotatably installed, and a cartridge slider, which slides by rotation of the cartridge sleeve to open the ink cartridge; and an ink sealing member provided on a surface where the cartridge sleeve contacts the cartridge slider that prevents leakage of ink when the ink cartridge is closed.