Minolta Company, Ltd.

Hisashi Takata

Hideo Hotomi

Kusunoki Higashino

Yasuhiro Sando

Yasuhisa Fujii

Naoki Matsui

Toshio Norita

Shoichi Minato

Fumiya Yagi

Shigeaki Tochimoto

Norihiro Agawa

Keishi Sawada

A 3D object molding apparatus has a tank holding an uncolored or white resin as a first material for use in molding an interior of a 3D molded object and other thanks holding colored resins as second materials for use in molding a surface of the 3D molded object. A control unit moves a nozzle head in the XY plane and controls jetting of resins from injection nozzles of the nozzle head. When molding an interior of the 3D molded product, at least the first material is jetted and when molding a surface of the product, at least the second material is jetted. The apparatus has coloring nozzles to jet predetermined coloring agents in molding the 3D molded product to achieve coloring of the 3D molded product in the molding process.

Three-dimensional object molding apparatus

The present invention relates to an inkjet recording head, which includes an ink cavity and an ink discharge port, a mounting member covering the ink cavity, an oscillating member, and a substrate to support the oscillating member. Various parts of the inkjet recording head are held together with adhesive. In attaching the piezoelectric element to the mounting member, opposing surfaces of the oscillating member and the mounting member are fixed to one another with adhesive. Then, the two members are pressed together, thereby causing excessive adhesive to emerge from between opposing surfaces of the oscillating member and the mounting member. The emerged adhesive is formed into chamfer to provide the oscillating member and the mounting member with areas of attachment that extend beyond the area of attachment that exists between the opposing surfaces.

Inkjet recording head having a driving source attached by a chamfered adhesive layer

An electrostatic inkjet head has first and second electrodes. The first electrode is supported on a substrate and the second electrode is on a diaphragm so that a gap is formed between the first and second electrodes. A drive circuit is connected to the first and second electrodes to apply a voltage or pulse between the electrodes. When a voltage is applied between the electrodes, an electrostatic attraction force is generated between the electrodes. The attraction force displaces the diaphragm toward the substrate. This displacement of the diaphragm is used for the ejection of ink. Also, when the voltage is turned off, opposing central portions of the first and second electrodes define a gap that is greater than that defined by opposing end portions of the first and second electrodes. On the other hand, when the voltage is turned on, the opposing central portions of the first and second electrodes define another gap that is substantially equal to that defined by the opposing end portions of the first and second electrodes.

Electrostatic inkjet head having spaced electrodes

An ink jet head for a printer wherein an ink drop is ejected from a nozzle to fly and land on the recording paper to form an image. The ink jet head includes the nozzle for ejecting ink, an ink channel that communicates with the nozzle, a pair of oscillating plates that are opposing to each other on walls of the ink channel, a pair of electrodes disposed in contact with the oscillating plates, an ink chamber for holding the ink, and an inlet for supplying the ink from the ink chamber to the ink channel. A gap between the electrodes is filled with the ink having a relative dielectric constant higher than air. A voltage is applied between the electrodes.

Ink jet head, drive method of ink jet head, and ink jet recording apparatus

An ink-jet recording head for use in an ink-jet printer comprises a plurality of head portions. Each of head portions includes an ink cavity for receiving an ink material, means for pressurizing the ink material in the ink cavity, and a nozzle through which the ink material is ejected. The nozzle has an individual cross section with respect to an axial direction thereof and the cross section of one head portion is different from that of another head portion.

Ink-jet recording head

In an ink-jet recording head using piezoelectric members, unwanted ejection of an ink material due to cross-talk is prevented. A head 10 comprises a channel plate 16 provided with a plurality of nozzles 28 and ink cavities 26, respectively, a diaphragm 18 adapted to cover the ink cavities, a vibration plate 20 with a plurality of piezoelectric members opposed to respective ink cavities through the diaphragm and a base plate 22 for supporting the piezoelectric members. The base plate 22 is formed such that a value of the elastic modulus multiplied by the thickness thereof is about 9.0.times.10.sup.3 (kgf/mm) or more.

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Nishinomiya, Japan

Hisashi Takata