Samsung Electronics Co., Ltd.

S-printing Solution Co., Ltd.

Samsung Sdi Co., Inc.

Hp Printing Korea Co., Ltd.

Koea Fuel-tech Corporation

Hewlett-packard Development Company, L.p.

Joon-hee Kim

Sang-hoon Lee

Jae-Yong Lee

Hye-Jung Cho

Sung-wook Kang

Jin-ho Kim

Jin-Hong Kim

Ji-won Moon

Ho-jin Jang

Yun-kyu Sim

Young-Jae Kim

Seung-gweon Lee

Young-chae Kim

Young-su Lee

Dong-kee Sohn

Sung Gi Kim

Sung-gi Kim

Jin-hwa Hong

Ji-Won Moon

Seong-woong Yang

Oh-dug Kwon

Seung-Gweon Lee

Jae-hyun Shin

Sang-Hoon Lee

Won-chul Jung

Young-hwan Kim

Seong-Woong Yang

Jin-Hwa Hong

Ho-Jin Jang

Provided is a method of detecting release of a development nip of an image forming apparatus that includes a photoconductor and a developing roller to contact each other to form a development nip and to be away from each other to release the development nip. The method includes obtaining a reference load, after charging the photoconductor in a state in which the development nip is formed, by measuring a load of a transfer system including the photoconductor and a transfer roller, release the development nip and blocking light irradiated from an exposing unit to the photoconductor, obtaining a detected load by measuring a load of the transfer system after exposing the photoconductor, and determining whether the development nip is normally released based on the reference load and the detected load.

Electrophotographic image forming apparatus and method for detecting release of development nip

A cartridge detachably attachable to a main body of an image forming apparatus is provided. The cartridge includes a rotary member and a cartridge coupler. The cartridge coupler includes a transmission member coupled to a rotation axis of the rotary member, a receiving member connected to a set coupler provided in the main body for transmission of power, and a connection member connecting the transmission member and the receiving member together. The receiving member has an Oldham structure allowing movement relative to the transmission member in an axial direction. The receiving member is movable to a first position at which a rotation axis of the receiving member is misaligned with a rotation axis of the transmission member in an attachment or detachment direction, and to a second position at which the rotation axis of the receiving member is aligned with the rotation axis of the transmission member.

Cartridge and electrophotographic image forming apparatus including the same

Provided is a process cartridge attachable to and detachable from a main body of an image forming apparatus. The process cartridge includes at least one roller, sidewalls on an axial direction of the at least one roller, and a first cartridge electric contact and a second cartridge electric contact provided on the sidewalls. One of the first cartridge electric contact and the second cartridge electric contact is a fixed electric contact, and the other is a movable electric contact that is movable in a direction protruding from the sidewalls.

Process cartridge having fixed and moveable electric contacts and electro-photographic image forming apparatus using the process cartridge

Provided is a developing cartridge including a photosensitive unit and a developing unit connected to each other to rotate to a developing location and a non-developing location. An elastic member applies an elastic force to the developing unit and the photosensitive unit in a direction of rotating to the developing location. The developing cartridge includes a nip separating portion switched to a nip forming location where the developing unit is located at the developing location and to a nip separating location where the developing unit is located at the non-developing location, a manipulation portion for switching the nip separating portion to the nip forming location and to the nip separating location by a manual manipulation, and a nip forming unit for switching the nip separating portion from the nip separating location to the nip forming location as the photosensitive unit and the developing unit start to operate.

Developing cartridge and image forming apparatus employing the same

A cartridge that is attached to or detached from a main body of an image forming apparatus, including: a memory unit that includes a contact portion via which the cartridge is connected to the main body and that is connected to the main body to transmit information of the cartridge to the main body; and a moving member on which the contact portion is mounted, wherein the moving unit is moved to a second position where the contact portion is protruded out of the cartridge in order to be connected to a connection portion provided in the main body and a first position that is hidden inside the cartridge.

Cartridge and electrophotographic image forming apparatus using the same

A cartridge is attached to or detached from a main body of an image forming apparatus that has an opening portion and a door that opens or closes the opening portion. The cartridge includes: a memory unit with a contact portion via which the cartridge is connected to the main body to transmit information of the cartridge to the main body; and a moving member on which the contact portion is mounted, wherein the moving member is moved to a first position where the contact portion is hidden inside the cartridge and a second position where the contact portion protrudes out of the cartridge to be connected to a connection portion provided in the main body, the moving member being moved to the second position in connection with closing of the door.

An image forming apparatus includes a main body; at least one developer including an image carrier unit having an image carrier and a charged body charging the image carrier, a developing unit installed to swing at a predetermined angle with respect to the image carrier unit and having a developing roller, and a pressing member pressing the developing unit so that the developing roller comes in contact with the image carrier, and separably installed in the main body; a nip separation unit installed in the main body on one side of the developer to swing the developing unit so that the developing unit is in a position that is separated from the image carrier; and a control unit controlling the developer and the nip separation unit according to a print command.

Image forming apparatus

A circuit connection control system of a fuel cell includes a point connection portion to which an anode current collecting portion and a cathode current collecting portion of each unit cell are electrically connected, a voltage measuring unit that measures an output voltage of each unit cell, a switching unit connecting the anode current collecting portions and the cathode current collecting portions of the plurality of unit cells at the point connection portion; and a DC-DC converter that converts a voltage generated from the fuel cell to a predetermined voltage. A method of operating the circuit connection control system includes measuring an output voltage of each unit cell; detecting a first unit cell showing an output voltage lower than a predetermined first voltage; and connecting the first unit cell in parallel to a second unit cell.

Circuit connection control system of fuel cell and method of operating the same

In a sunshade device for the rear door window of an automobile both ends of a sunshade screen rod, to which an end of the sunshade screen wound on the winding roll biased by an elastic member in a frame is fastened, are raised and lowered by a telescopic bar and an actuation arm, which are extended or retracted and erected or tilted through a single driving mechanism assembly including a driving motor, so as to spread or wind the sunshade screen.

Sunshade device for rear door window of automobile

Growing community of inventors

Seoul, South Korea

Joon-hee Kim