Abstract: The invention is directed to a method for producing non-oxide semiconductor nanoparticles, the method comprising: (a) subjecting a combination of reaction components to conditions conducive to microbially-mediated formation of non-oxide semiconductor nanoparticles, wherein said combination of reaction components comprises i) anaerobic microbes, ii) a culture medium suitable for sustaining said anaerobic microbes, iii) a metal component comprising at least one type of metal ion, iv) a non-metal component comprising at least one non-metal selected from the group consisting of S, Se, Te, and As, and v) one or more electron donors that provide donatable electrons to said anaerobic microbes during consumption of the electron donor by said anaerobic microbes; and (b) isolating said non-oxide semiconductor nanoparticles, which contain at least one of said metal ions and at least one of said non-metals.

Abstract: An electrophotographic image forming apparatus and development cartridge are provided. The apparatus including a separating member mounted in a development cartridge. The separating member includes a development nip separating portion and a charging nip separating portion respectively separating a development nip and a charging nip when the development cartridge is mounted in a mounting portion of a photoreceptor cartridge mounted in a body.

Abstract: An electrophotographic image forming apparatus and a development cartridge are provided. The electrophotographic image forming apparatus includes a body including an opening, a photoreceptor cartridge attached to, or detached from, the body through the opening, a photoconductive drum and a mounting portion, a development cartridge attached to, or detached from, the mounting portion through the opening while the photoreceptor cartridge is mounted in the body, a development roller supplying toner to an electrostatic latent image formed on the photoconductive drum, a cover for opening or closing the opening, and a pressurizing unit fixing the development cartridge to the mounting portion by providing a pressing force to the development cartridge in a direction parallel to a center line connecting centers of the photoconductive drum and development roller while the opening is closed.

Abstract: A developing apparatus includes an organic photo conductor, an OPC frame part to support the organic photo conductor, a developing roller to develop a latent image formed on the organic photo conductor by supplying a developer, a developing roller frame part to support the developing roller, a developer storing part to store the developer and provided with a supplying opening through which the developer is supplied to the developing roller, a spacer removably interposed between the OPC frame part and the developing roller frame part and spacing the OPC frame part from the developing roller frame part such that the organic photo conductor and the developing roller do not contact each other, a leakage preventer removably attached to and sealing the supplying opening, and a connecting part to connect the spacer with the leakage preventer. Thus, the spacer and the leakage preventer are capable of being removed simultaneously.

Abstract: The invention is directed to a method for producing non-oxide semiconductor nanoparticles, the method comprising: (a) subjecting a combination of reaction components to conditions conducive to microbially-mediated formation of non-oxide semiconductor nanoparticles, wherein said combination of reaction components comprises i) anaerobic microbes, ii) a culture medium suitable for sustaining said anaerobic microbes, iii) a metal component comprising at least one type of metal ion, iv) a non-metal component containing at least one non-metal selected from the group consisting of S, Se, Te, and As, and v) one or more electron donors that provide donatable electrons to said anaerobic microbes during consumption of the electron donor by said anaerobic microbes; and (b) isolating said non-oxide semiconductor nanoparticles, which contain at least one of said metal ions and at least one of said non-metals.

Abstract: A resistance variable memory device includes: a first electrode; a second electrode; a resistance variable layer interposed between the first electrode and the second electrode; and nano particles that are disposed in the resistance variable layer and have a lower dielectric constant than the resistance variable layer.

Abstract: An image forming apparatus includes a photoconductor unit, a developing unit to feed a developer to a photoconductor of the photoconductor unit, the developing unit being provided rotatable relative to the photoconductor unit, and a link unit to allow a charging roller of the photoconductor unit to come into contact with or be separated from a photoconductor while in linkage with rotation of the developing unit.

Abstract: A variable resistance memory device that includes a first electrode, a second electrode, a variable resistance layer interposed between the first electrode and a second electrode. A metal oxide electrode is interposed between the first electrode and the variable resistance layer, and the metal oxide electrode does not include a nitrogen constituent.

Abstract: A developing unit of an image forming apparatus includes a developer cartridge detachably mounted on the developing unit, a developing case in which a developing member and a first supply member are provided, a developer supply passage to supply a developer stored in the developer cartridge to the developing case, and a developer supplement unit mounted in a portion connecting the developing case and the developer supply passage, to agitate the developer supplied through the developer supply passage and to supply the agitated developer to the developing case.

Abstract: A developing device usable with an image forming apparatus having a developer delivery device of an improved drive configuration. The developing device includes a developer storage unit, a rotating member arranged in the developer storage unit, and a plurality of developer delivery members arranged in an axial direction of the rotating member to be rotated around the rotating member upon receiving rotation power from the rotating member. A first power-transmission structure may be provided between at least one of the plurality of developer delivery members and the rotating member to allow slip therebetween.

Abstract: Disclosed is a charging apparatus usable with an image forming apparatus that includes a body to be charged; a housing to rotatably support the body to be charged, a charging member to charge a surface of the body to be charged to a predetermined electric potential, a cleaning member to clean foreign materials remaining on the surface of the body to be charged, and a cleaning member supporting bracket disposed in the housing to support the cleaning member and the charging member.

Abstract: A resistance variable memory device includes: a first electrode; a second electrode; a resistance variable layer interposed between the first electrode and the second electrode; and nano particles that are disposed in the resistance variable layer and have a lower dielectric constant than the resistance variable layer.

Abstract: A developing apparatus includes an organic photo conductor, an OPC frame part to support the organic photo conductor, a developing roller to develop a latent image formed on the organic photo conductor by supplying a developer, a developing roller frame part to support the developing roller, a developer storing part to store the developer and provided with a supplying opening through which the developer is supplied to the developing roller, a spacer removably interposed between the OPC frame part and the developing roller frame part and spacing the OPC frame part from the developing roller frame part such that the organic photo conductor and the developing roller do not contact each other, a leakage preventer removably attached to and sealing the supplying opening, and a connecting part to connect the spacer with the leakage preventer. Thus, the spacer and the leakage preventer are capable of being removed simultaneously.

Abstract: An electrophotographic image forming apparatus including first and second developing devices to develop electrostatic latent images formed on first and second photosensitive bodies, each of the first and second developing devices comprise a first toner containing unit to contain a toner, the second developing device further including a second toner containing unit that is connected to the first toner containing unit by a connecting unit.

Abstract: An image forming apparatus includes a photoconductor unit, a developing unit to feed a developer to a photoconductor of the photoconductor unit, the developing unit being provided rotatable relative to the photoconductor unit, and a link unit to allow a charging roller of the photoconductor unit to come into contact with or be separated from a photoconductor while in linkage with rotation of the developing unit.

Abstract: An image forming apparatus having an improved configuration to prevent foreign substances from accumulating on a space maintaining member used to maintain a constant distance between a photoconductor and a developer delivery member. The image forming apparatus includes a photoconductor, a developer delivery member to deliver and feed developer to the photoconductor, a cleaning member to remove the developer and foreign substances remaining on a surface of the photoconductor while coming into contact with the photoconductor, and a space maintaining member arranged to come into contact with the photoconductor so as to maintain a constant developing gap or developing nip between the photoconductor and the developer delivery member. The space maintaining member is located between both ends of the cleaning member.

Abstract: A developing apparatus includes an organic photo conductor, an OPC frame part to support the organic photo conductor, a developing roller to develop a latent image formed on the organic photo conductor by supplying a developer, a developing roller frame part to support the developing roller, a developer storing part to store the developer and provided with a supplying opening through which the developer is supplied to the developing roller, a spacer removably interposed between the OPC frame part and the developing roller frame part and spacing the OPC frame part from the developing roller frame part such that the organic photo conductor and the developing roller do not contact each other, a leakage preventer removably attached to and sealing the supplying opening, and a connecting part to connect the spacer with the leakage preventer. Thus, the spacer and the leakage preventer are capable of being removed simultaneously.

Abstract: A developing apparatus includes an organic photo conductor, an OPC frame part to support the organic photo conductor, a developing roller to develop a latent image formed on the organic photo conductor by supplying a developer, a developing roller frame part to support the developing roller, a developer storing part to store the developer and provided with a supplying opening through which the developer is supplied to the developing roller, a spacer removably interposed between the OPC frame part and the developing roller frame part and spacing the OPC frame part from the developing roller frame part such that the organic photo conductor and the developing roller do not contact each other, a leakage preventer removably attached to and sealing the supplying opening, and a connecting part to connect the spacer with the leakage preventer. Thus, the spacer and the leakage preventer are capable of being removed simultaneously.