Patent application number | Description | Published |
20080304880 | TRANSFER APPARATUS AND IMAGE FORMING APPARATUS HAVING THE SAME - A transfer apparatus for an image forming apparatus includes a transfer tube to face an image carrier, and a transfer roller disposed inside the transfer tube to cause the transfer tube to rotate. | 12-11-2008 |
20090214249 | MEMORY, TONER CARTRIDGE, DEVELOPING DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME - A toner cartridge, a developing device, and an image forming apparatus, in which a memory is provided in the cartridge to be accessible by an image forming apparatus are disclosed. The image forming apparatus includes a developing device detachably attached to the body the image forming apparatus, and a toner cartridge detachably disposed in the developing cartridge, which includes a memory accessible from a surface of the toner cartridge exposed outside the developing cartridge when the toner cartridge is installed in the developing cartridge. | 08-27-2009 |
20090214269 | DEVELOPER CARTRIDGE, DEVELOPING DEVICE, AND IMAGE FORMING APPARATUS HAVING THE SAME - A developing cartridge and a developing device capable of preventing developer leak which may occur during replacement of a developer containing unit, and an image forming apparatus having the same are provided. The image forming apparatus includes an image forming apparatus body where a transfer path for a printing medium is formed, and a developing device for developing a visible image. The developing device may include, for example, developing cartridge, a developer containing unit, which contains a supply of developer therein, and which is detachably disposed in the developing cartridge to form a developer transfer path fluidly communicating with the developing cartridge, and a shutter unit which closes the developer transfer path when the developer containing unit is removed from the developing cartridge. | 08-27-2009 |
20130022375 | DEVELOPING DEVICE FOR IMAGE FORMING APPARATUS AND IMAGE FORMING APPARATUS HAVING THE SAME - A developing device of an image forming apparatus to convey a developing agent, the developing device including a housing having a developing agent accommodating compartment disposed therein, a first rotation member and a second rotation member that are disposed inside the developing agent accommodating compartment, a plurality of developing agent convey members that rotate around the first rotation member and the second rotation member being arranged along a shaft direction of the first rotation member, and at least one torque limiter coupled to between the first rotation member and at least one of the plurality of developing agent convey members, the at least one torque limiter to allow at least one of the plurality of developing agent convey members to perform a relative rotation with respect to the first rotation member when a load is applied to the plurality of developing agent convey members is varied. | 01-24-2013 |
20130129381 | IMAGE FORMING APPARATUS - An image forming apparatus includes a main body of the image forming apparatus; a developing cartridge that is detachably disposed in the main body and includes an image carrier; a charging roller that is disposed to face the image carrier in the developing cartridge and charges a surface of the image carrier; a charging roller separating unit that moves the charging roller between a first position in which the charging roller is in contact with the image carrier and a second position in which the charging roller is spaced apart from the image carrier; and a paper feeding cassette detachably disposed in the main body; wherein when the paper feeding cassette is first mounted, the charging roller is fixed in the second position by the charging roller separating unit. | 05-23-2013 |
20140205318 | ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - An electrophotographic image forming apparatus is provided including a body including an opening and a first coupler, a photoreceptor cartridge including a second coupler connected to the first coupler, a first gear connected to the second coupler, and a mounting portion, and attached to or detached from the body through the opening; and a development cartridge including a second gear connected to the first gear and attached or detached from the mounting portion through the opening while the photoreceptor cartridge is mounted in the body. | 07-24-2014 |
20140205321 | ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND DEVELOPMENT CARTRIDGE - An electrophotographic image forming apparatus and a development cartridge are provided. The electrophotographic image forming apparatus including a body including an opening, a photoreceptor cartridge attached to, or detached from, the body through the opening, and including a mounting portion, and a development cartridge attached to, or detached from, the mounting portion through the opening while the photoreceptor cartridge is mounted in the body. The mounting portion includes first and second guide rails, and both side portions of the development cartridge respectively include first and second guide protrusions having different protrusion amounts from the both side portions to be respectively guided by the first and second guide rails. | 07-24-2014 |
20140341610 | DEVELOPING UNIT AND IMAGE FORMING APPARATUS HAVING THE SAME - A developing unit mounted on an image forming apparatus is provided. The developing unit includes a housing, a developing agent storage chamber that is provided inside the housing and in which a developing agent is stored, a developing chamber that communicates with the developing agent storage chamber, a path on which the developing agent is moved from the developing agent storage chamber to the developing chamber, and an opening/closing unit that is provided on the path and is open/closed while interlocking with an operation of mounting the housing on the image forming apparatus. Thus, a leakage of the developing agent can be prevented, and detachment of the developing unit can be easily performed. | 11-20-2014 |