Abstract: There is provided a plasma processing apparatus for performing plasma processing on a substrate, comprising: a processing container accommodating the substrate; an electrode to which a high-frequency power for generating plasma in the processing container is applied; a high-frequency power supply configured to apply the high-frequency power to the electrode; and a high-frequency power supply circuit configured to supply the high-frequency power from the high-frequency power supply to the electrode. The high-frequency power supply circuit comprises: a power supply path configured to supply a power from the high-frequency power supply to the electrode; and a matching device configured to match a high-frequency power supply-side impedance with a plasma-side impedance, the matching device comprising a negative impedance portion that is connected to the power supply path and realizes a negative impedance corresponding to a plasma-side impedance.

Abstract: An image forming apparatus includes: a transport member that transports a medium; a storage that is disposed below the transport member in a gravitational direction, and that stores the medium which is delivered by the transport member and falls into the storage; a supporter that is provided in the storage, and that has an upper end disposed below the transport member in a gravitational direction, and that allows the medium to be stored with a front end of the medium in a discharge direction matching a lower end of the medium in a gravitational direction; and a guidance member that is disposed in the supporter with the medium interposed between the guidance member and the supporter, and that guides the medium which falls to the supporter.

Abstract: An image forming apparatus includes: a transport member that transports a medium; a storage that is disposed below the transport member in a gravitational direction, and that stores the medium which is delivered by the transport member and falls into the storage; a supporter that is provided in the storage, and that has an upper end disposed below the transport member in a gravitational direction, and that allows the medium to be stored with a front end of the medium in a discharge direction matching a lower end of the medium in a gravitational direction; and a guidance member that is disposed in the supporter with the medium interposed between the guidance member and the supporter, and that guides the medium which falls to the supporter.

Abstract: A developer circulation system includes a storage tank which stores a developer, a development device, a developer supply passage through which the developer is supplied to the development device from the storage tank, a developer return passage through which the developer is returned to the storage tank from the development device, a circulation pump, and an agitation member which agitates the developer in the storage tank. An outlet of the developer return passage and an opening of the developer supply passage are located in the storage tank, so as to promote a flow of the developer generated by the rotation of the agitation member, at positions furthest from each other along a flow of the developer from the outlet of the developer return passage and the opening of the developer supply passage.

Abstract: A scorotron charging apparatus includes a wire, a shield, a grid, and a side seal arranged between the grid and the shield. The side seal includes a conductive material.

Abstract: In a contact type charger including a charge roller which comes into contact with a photosensitive body and a power supply circuit which applies a direct-current fixed voltage to the charge roller, the power supply circuit further includes a resistor and applies the voltage to the charge roller through the resistor. Further, the power supply circuit includes a rectifying circuit and the resistor is disposed closer to the charge roller side than the rectifying circuit. Due to such a constitution, in response to an impedance between the photosensitive body and the charge roller, a current which flows into the charge roller is changed and an output voltage value is changed and hence, a fog on a background which is generated due to the change of the environment or change of the charge potential derived from the change of the film thickness of the photosensitive body can be prevented.

Abstract: Liquid developer of different colors capable of being formed in a film shape are used to form developed images on a plurality of photosensitive drums 10. The developed images are successively transferred from the photosensitive drums 10 onto an image carrier belt 1 so as to be overlaid on one another while applying an electrostatic force. In the color developed image formed on the image carrier belt 1, the solid component ratio of the liquid developer is increased to form the color developed image into a film shape, which is transferred and fixed to a recording medium.

Abstract: A developer circulation system includes a storage tank which stores a developer, a development device, a developer supply passage through which the developer is supplied to the development device from the storage tank, a developer return passage through which the developer is returned to the storage tank from the development device, a circulation pump, and an agitation member which agitates the developer in the storage tank. An outlet of the developer return passage and an opening of the developer supply passage are located in the storage tank, so as to promote a flow of the developer generated by the rotation of the agitation member, at positions furthest from each other along a flow of the developer from the outlet of the developer return passage and the opening of the developer supply passage.

Abstract: A liquid developing apparatus including a photosensitive element forming an electrostatic latent image thereon, a developing roller for supplying a developer to the photosensitive element, a squeezing roller for squeezing the photosensitive element, and a regulatory roller for preventing the spread of the surplus developer. By employing the liquid developing apparatus, most of the developer on the photosensitive element can be maintained thereon and properly discharged.

Abstract: A liquid developing apparatus includes a developing roller for developing a latent image on a surface of a photoconductor belt by using a liquid developer. The developing roller is opposed to the surface of the photoconductor belt. A cleaning electrode is provided to remove toner particulates from the surface of the developing roller. The cleaning electrode is opposed to the developing roller with a predetermined distance. A first voltage and a second voltage are applied to the developing roller and the cleaning electrode, respectively. The second voltage applied to the cleaning electrode has an AC component to remove toner particulates from the developing roller.

Abstract: An image formation apparatus for performing development by supplying to a photosensitive body a developing solution containing toner includes a developing roller; a developing solution supply port; a squeeze roller for wiping off an unnecessary portion of the developing solution from the photosensitive body; a moving frame reciprocally moving toward/from the photosensitive body; a squeeze support body for holding the squeeze roller; and two elastic bodies having different natural lengths that are provided between the moving frame and the squeeze support body and can be expanded and contracted for urging depression of the squeeze roller toward the photosensitive body.

Abstract: An electrostatically charged image is applied to a smooth surface and moved past a development zone in which a carrier sheet perforated with a multitude of bores is also located. A layer of developing liquid is applied under gradually increasing pressure to a first surface of the carrier sheet so that the applied liquid squeezes through the bores to and beyond a second, opposite surface of the carrier sheet. The liquid emerges above the opposite surface of the carrier sheet to produce a multitude of part-spherical bulges. Field concentration occurs on the part-spherical surfaces of the individual tiny bulges. The first surface of the carrier sheet preferably exhibits lyophilic characteristic to the developing liquid, while the second surface exhibits lyophobic characteristic.