Abstract: A data searching unit 12 of a data searching apparatus 10 Obtains, according to a searching request including a search condition specified by a data searching application 16, metadata which satisfy the search condition from a data storage unit 11, and instructs an external communication unit 15 to request searching of data to a data providing apparatus 20 with the same search condition.

Abstract: A data searching unit 12 of a data searching apparatus 10 obtains according to a searching request including a search condition specified by a data searching application 16, metadata which satisfy the search condition from a data storage unit 11, and instructs an external communication unit 15 to request searching of data to a data providing apparatus 20 with the same search condition.

Abstract: An electrophotographic device constructed with a light irradiating device to irradiate light on a photosensitive member, a charging device to uniformly charge the photosensitive member after the light irradiation by the light irradiating device; a light image projecting device to project a light image after the charging by the charging device to thereby form an electrostatic latent image corresponding to the light image on the photosensitive member, a developing device to develop the electrostatic latent image, and a control device to vary the irradiated light quantity by the light irradiating device and the exposure light quantity by the light image projecting device in accordance with a potential state of the photosensitive member at the time of the latent image formation.

Abstract: A developing device for developing a latent image held on a latent image holding member by application of a developing agent, onto the latent image, which comprises a developing sleeve disposed in confrontation to the latent image holding member, a developer feeding device to feed the developer onto the surface of the developing sleeve, a regulating device to regulate thickness of a developer layer on the developing sleeve, and a shutter blade which is so provided as to be able to take a contact position with the surface of the developing sleeve and a withdrawal position away from the surface.

Abstract: This specification discloses an electrophotographic method and apparatus for forming an electrostatic latent image on a photosensitive medium having a conductive layer, a photoconductive layer and an insulating layer. The method comprises a primary charging step, an image light exposure step, a secondary charging step, a tone regulating step and a whole surface exposure step.