Konica Corporation

Konica Minolta, Inc.

Masato Ueda

Satoshi Haneda

Masakazu Fukuchi

Tadashi Miwa

Shizuo Morita

Yasuhiko Tanaka

Toshinori Yamazaki

Kiyoaki Kawamoto

Ryohei Kobayashi

Tetsuko Omoto

Kazuki Hiejima

An inkjet head includes pressure chambers arranged in 2 or more rows and a common ink chamber connected to all the pressure chambers, wherein each of the pressure chambers includes a damper member inside of the common ink chamber of the inkjet head for commonly supplying an ink from the common ink chamber via an ink inlet which faces the common ink chamber, and the shortest distance between the damper member and the ink inlet is made shorter than the distance between ink inlets in adjacent rows of pressure chambers.

Inkjet head with damper member in common ink chamber, and method for driving inkjet head

An ink jet head having: a nozzle tip having a front end surface in which a nozzle for jetting ink is provided, and four side surfaces adjacent to a back end surface which is opposite to the nozzle; and a frame shape member on which the nozzle tip is mounted, the frame shape member having a first protrusion pair each of which abuts on one pair of facing sides of the four side surfaces to sandwich the nozzle tip, and a second protrusion pair which abuts on the other pair of facing sides of the four side surfaces to sandwich the nozzle tip.

Ink jet head and ink jet printer

The invention provides a method of forming a color image on a recording material by transferring a toner image formed on an image carrying means to the recording material and by fixing the toner image on the recording material. The method further includes adhering a transparent toner layer onto the recording material, and fixing the transparent toner layer together with the toner image on the recording material.

Color image forming method

In a toner image fixing device, there are provided an endless belt being looped up around a heating roller and a conveyance roller, a pressure roller for pressing a sheet having a toner image onto the heating roller with the endless belt intervening between the pressure roller and the heating roller. A sensor is disposed inside the loop of the belt so as to come in contact with the heating roller, for detecting the temperature of the heating roller. The fixing temperature for the toner image is controlled on the basis of the temperature of the heating roller detected by the sensor. A first nip region is formed on a pressing portion located between the heating roller and the fixing roller. A second nip region is formed between the belt and the fixing roller, continuing from the first nip region but without contacting the heating roller.

Fixing apparatus having two nip regions

A method of forming a developer layer on a rotating developing sleeve for developing a latent image on an image carrier, in which the developer layer is formed by conveying the developer on the sleeve below a regulating member which is applied with pressure onto the developer. The developer composed of two-component additionally contains spacer particles having a uniform diameter greater than the maximum diameter of carrier particles in the developer, which maintain a predetermined gap equal to the diameter of the spacer particles between the sleeve and the regulating member.

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Hachioji, Japan

Masato Ueda