Abstract: A rotation member unit detachable from a casing includes a rotation member for rotating when driven, and plural drive introduction members arranged at both ends of the rotation member in a rotation axial direction of the rotation member, respectively. The drive introduction member engages with a drive transmission member rotated by a motor.

Abstract: A rotation member unit detachable from a casing includes a rotation member for rotating when driven, and plural drive introduction members arranged at both ends of the rotation member in a rotation axial direction of the rotation member, respectively. The drive introduction member engages with a drive transmission member rotated by a motor.

Abstract: A toner has a surface to which a titanium black fine particle adheres, the titanium fine particle having a property of being changed in color from black to white by flash-light.

Abstract: A toner has a surface to which a titanium black fine particle adheres, the titanium fine particle having a property of being changed in color from black to white by flash-light.

Abstract: A toner has a surface to which a titanium black fine particle adheres, the titanium fine particle having a property of being changed in color from black to white by flash-light.

Abstract: A nozzle plate to be mounted on an ink jet print head includes a plate body on which is formed a plurality of jet aperture portions from which ink is jetted and a water-repellant film formed on this plate body. The diameter of jet aperture portions formed on the plate body and the diameter of water-repellant film apertures formed on the water-repellant film so as to connect with the nozzle apertures are the same diameter R3, so the ink jet flow can be accurately controlled.

Abstract: A toner has a surface to which a titanium black fine particle adheres, the titanium fine particle having a property of being changed in color from black to white by flash-light.

Abstract: An ink-jet head includes a head portion having a plurality of head segments and an ink feeding portion, where ink is supplied such that pipes each have one end connected to the head portion and the other end connected to one of ink feeding paths of the ink feeding portion. The pipes are held by elastic ring-shaped members that are further sidewise held by rigid ring-shaped members and vertically sandwiched between the ink feeding paths and an upper end portion of the head portion.

Abstract: The present invention has an object to provide an inkjet head and a method for manufacturing the inkjet head which not only protects a member at and/or near a surface onto which the nozzle plate is connected (nozzle connection surface), but also shortens the manufacturing time. A protective layer is provided between the nozzle plate and the piezo-electric element, enabling only the protective layer to be polished, protecting the piezo-electric element from being damaged by the polishing when the nozzle connection surface is formed. After the inkjet head is completed, the protective layer prevents ink leakage to the piezo-electric element.

Abstract: The instant invention has an exemplified object to provide an inkjet head and recording device having such an inkjet head with a simpler structure as achieves higher quality of printing inexpensively than the conventional. The pressure-chamber plate of this invention is slit or divided into a plurality of elements.

Abstract: It is an exemplified object of the present invention to provide an inkjet head, its manufacturing method, and a recording device that can form a high-quality image while preventing an ink leakage. To accomplish the object, an indent is provided at a joint surface of a pressure chamber plate with an adhesive.

Abstract: The ink jet printer includes a pressure chamber plate having a plurality of pressure chambers 20 separated by bulkheads, and a piezoelectric member having drive sections arranged opposite to the pressure chambers via a vibrating plate. The drive sections are separated from each other by parallel extending grooves. The piezoelectric member has inner electrodes 32 embedded therein and exposed to the side surfaces of the drive sections. The exposed portions of the inner electrodes are covered by insulating members, so that no short circuit is caused between the inner electrodes provided in the piezoelectric member.

Abstract: An image forming apparatus having a developing unit for developing a latent image electrostatically formed on a photoconductive element or similar image carrier by a developer, or toner, to produce a toner image, and a cartridge removably mounted on the apparatus for supplying a toner thereto. An operator is directed through the steps of toner re-supply from the removal of the used toner cartridge to the insertion of a new toner cartridge while watching instructions which sequentially appear on a display. The present invention allows for the display of instructions which will lead the operator applyin toner through a step-by-step process to ensure that the toner is added correctly, quickly and efficiently.

Abstract: A copier, printer or similar image forming apparatus operable with a supply such as a developer cartridge being loaded in a body thereof. A door forms a part of a housing portion of the apparatus body and is provided with an opening for loading and unloading a supply and an openable lid for covering and uncovering the opening. Even when the lid is opened, the operation of the apparatus is not interrupted. Simple and safe replacement of a supply is insured and, yet, a supply is prevented from contaminating the apparatus when loaded and unloaded.

Abstract: An electrophotographic copying machine has a flash lamp for applying a flash of light to a document to be copied. The copying machine also includes a sensor for detecting whether the flash lamp is energized or not. When there is no signal indicating that the flash lamp is energized even in the presence of a command to energize the flash lamp, a control circuit determines that the flash lamp has failed to emit light at a predetermined exposure timing, and produces an output signal to effect a predetermined operation upon non-energization of the flash lamp.

Abstract: A toner mixture comprising ferromagnetic carrier particles and non-magnetic toner particles are caused to flow through a conduit for measuring the toner density which is the ratio of toner particles to carrier particles in the mixture. The effective inductance of an electromagnetic coil disposed in the conduit varies in accordance with toner density. The coil is designed so that the magnetic lines of force thereof are substantially confined within the conduit and are not influenced by external bodies.