Abstract: An ink jet head includes a pressure chamber, a vibration plate, and a piezoelectric element which is provided on the vibration plate and causes a volume displacement of the pressure chamber. The piezoelectric element has a thickness of 20 &mgr;m or less, and the pressure chamber and the piezoelectric element satisfy a relation V0/(L22b)>550×10−6, where V0 [m3] denotes a volume displacement of the pressure chamber when the piezoelectric element is driven, L2 [m] denotes a width of the piezoelectric element, and b [m] denotes a depth of the pressure chamber.

Abstract: A water-repellent coating having a higher wiping resistance against a wiper and capable of being formed by a more simplified process than was previously possible. The method of forming the water-repellent coating comprises a flat hard body and a plating-processed fluoric polymer which are formed on a nozzle plate having a nozzle as a substrate around the nozzle.

Abstract: The present invention relates to an ink jet recording head and a production method therefor, wherein ink is spouted by vibrating a vibrating plate that is a wall part of a pressure chamber, using an ink jet energy generating part. In the ink jet recording head that comprises a main body formed by a plurality of pressure chambers (ink chambers) provided corresponding to nozzles that spout ink, the vibrating plate that constitutes a wall of the compression chamber being provided to the main body and an energy generating part provided on the vibrating plate at a position corresponding to a forming position of the pressure chamber, which makes the ink inside the pressure chambers spouted from the nozzles by deformative-energizing the vibrating plate, the vibrating plate and the ink jet energy generating part are formed using the thin film forming technology.

Abstract: A slider plate fixing a front magnetic core at a predetermined position is joined and fixed to a back board provided with a back yoke and a coil layer so that a transducer element is constituted by the front magnetic core, the back yoke, and the coil layer, whereby a composite magnetic head is formed.

Abstract: Disclosed is a slim printing apparatus which employs a latent image forming method, such as electrophotographing method, and needs an apparatus-occupying area. This printing apparatus comprises a hopper for retaining sheets; a feeding path defined on that surface of the apparatus which is opposite to that surface of the apparatus where the hopper is disposed for conveyance of sheets; a feeding mechanism for feeding a sheet from the hopper onto the feeding path; an endless rotary latent image carrier provided between the hopper and the feeding path; an image forming unit, provided between the hopper and the feeding path, for forming a toner image on the latent image carrier; a transfer unit for transferring the toner image on the latent image carrier onto the sheet conveyed along the feeding path; and a fixing unit for fixing the toner image on the sheet.

Abstract: A color picture image formation device includes a plurality of photosensitive body drums and a plurality of image formation sections each consisting of a charge unit, an exposure unit and a plurality of developing units for developing toner picture images of various colors and an intermediate transfer body for holding the toner powder images of required number of colors, which transfers the toner picture images to the recording paper and fixes them thereon by a fixing unit after all the toner picture images have been formed on the intermediate transfer body. A transfer voltage is applied by the intermediate transfer body for every developing unit. The intermediate transfer body is a drum formed as a multiple layer structure including a metallic tube, an insulation layer, a metallic conductive electrode which is split into a plurality of sections, and a voltage application layer on the surface of the metallic tube. A transfer roller transfers the toner-picture images onto the recording paper.