Konica-minolta Holdings, Inc.

Konica Corporation

Konica Minolta Business Technologies, Inc.

Hiroshi Miyakoshi

Masahiro Morikawa

Kazumi Furuta

Osamu Masuda

Susumu Matsui

Naohiro Ono

Makiko Imae

Yoshiki Shibuya

Hiroshi Kobayashi

Koji Horii

Yuko Takahashi

Hiroyuki Horiai

Naoki Mitsugi

Katsuji Sasaki

Motohiro Yamada

The inkjet head has a first silicon substratehaving ink ejection portsformed, a glass substratebonded to the first silicon substrate, having ink channel holesformed thereon, and a second silicon substratehaving ink chambersgrooved, piezoelectric elementsprovided on the back side of the ink chambersand the ink chamber forming surface bonded to the glass substrates. In the second silicon substrate, there are formed an ink flow channelcommunicating with the ink chambersand through holescommunicating with the ink flow channelon the ink chamber forming surface, wherein an ink circulation tubesmade of glass tubes are bonded to the through holes, and the first silicon substrate, the glass substrate, the second silicon substrateand an bonding surface of the ink circulation tube are anodically-bonded.

Inkjet head and electrostatic attraction type inkjet head

A molding device for easily releasing a molding material produced by transferring a minute shape to resin using a die having the minute shape formed thereon from the die with no damage. A method for controlling such molding device is also provided. The molding device and the control method are characterized in that the force for releasing the molding material from the die is detected and an alarm signal is delivered if the number of times when the releasing force becomes higher than a level preset depending on the molding material reaches a preset number of times.

Molding device with releasing mechanism and method for controlling the same

An optical element includes: opposing surfaces each including two areas each of which includes a fine-periodic structure. The fine-periodic structures of the two areas have different directions from each other in each of the opposing surfaces. One of the opposing surfaces with the fine-periodic structures works as a quarter-wave plate and the other of the opposing surfaces with the fine-periodic structures works as a polarization separating element. A boundary of the two areas in one of the opposing surfaces and a boundary of the two areas in the other of the opposing surfaces are positionally identical.

Optical element, optical element manufacturing method and optical pickup device

An imprinting apparatus, for transferring a microstructure of a mold onto a forming material by pressing and mold-releasing, includes a plurality of driving devices which relatively move the mold the forming material to each other along an axis of a pressing direction, wherein the plurality of driving devices make different relative moving speeds of the mold and the forming material during the relative motion.

Imprinting apparatus and method

A producing method of an optical element such as quarter-wave plate wherein preparing a first member which has a coefficient of elasticity of 1-4 (GPa) at normal temperature, setting the temperature of a die having microscopic shape with high aspect ratio to be higher than the glass transition temperature of the first member and pressing the die against the first member to transfer a microscopic shape on the first member, a microstructure is formed on the first member. In the same manner, a second microstructure is formed on a second member. Afterwards, by connecting the first member and the second member, an optical element in which the first member and the second member are connected having microstructures with high aspect ratio face each other, is obtained.

Optical element producing method and optical element

A article having a micro-sized shape being formed on the surface of the article by pressing a die onto the surface, wherein the elastic modulus of the article at room temperature is in the range of 1-4 GPa, the thickness of the article after forming is equal to 0.1 mm or more and 20 mm or less and the aspect ratio of the micro-sized shape is equal to 1 or more. A forming method to produce an article comprising the steps of setting the temperature of a die having a micro sized shape to be equal or higher than the glass transitional temperature of material having an elastic modulus of 1 to 4 (GPa) pressing the die to the material to transfer the micro sized shape to the material, and cooling the die having the micro sized shape.

Forming methods, forming devices for articles having a micro-sized shape and optical elements

In the optical element fixing method, when optical elementis adhesively fixing memberby using the optical-curing adhesive, the optical-curing adhesive is applied on at least one of the adhesion sections of the optical element and the adhesive section of the fixing member, and the optical-curing adhesive is irradiated with the light from the light source through the loading jig while the load is being applied to the adhesion fixing section through loading jigmade of light-transmissive material.

Method of fixing an optical element and method of manufacturing optical module including the use of a light transmissive loading jig

An optical element holding structure, having: an optical element including an optical section having optical function, an outer peripheral portion which is positioned at the outer peripheral side of the optical section and a mounting portion which protrudes from the outer peripheral portion in a direction substantially parallel to the optical axis; and a lens barrel holding the optical element inside.

Optical element holding structure, optical element lens-barrel and optical communication module

There is described a molding method for molding a product, having a microscopic structure of high aspect ratio. The molding method includes the steps of: setting a temperature of a mold, having a microscopic shape, at a value higher than a glass transition temperature of a material being deformable with heat; pushing the mold against the material at a first velocity, after the material is positioned opposite to the mold so that the microscopic shape contacts the material; pushing the mold against the material at a second velocity being faster than the first velocity; and releasing the mold from the material. The pushing pressure for pushing the mold against the material at the first velocity is equal to or smaller than a half of that for pushing the mold against the material at the second velocity.

Molding method, cooling apparatus and optical element

A article having a micro-sized shape being formed on the surface of the article by pressing a die onto the surface, wherein the elastic modulus of the article at room temperature is in the range of 1&#x2013;4 GPa, the thickness of the article after forming is equal to 0.1 mm or more and 20 mm or less and the aspect ratio of the micro-sized shape is equal to 1 or more. A forming method to produce an article comprising the steps of setting the temperature of a die having a micro sized shape to be equal or higher than the glass transitional temperature of material having an elastic modulus of 1 to 4 (GPa) pressing the die to the material to transfer the micro sized shape to the material, and cooling the die having the micro sized shape.

There is provided a polygon mirror comprising a mirror body shaped in a regular polygon and having circumferential surfaces, a top surface and a bottom surface, a reflection surface formed on each of the circumferential surface, a machining reference surface provided on one of the top and bottom surfaces, machined to form a mirror surface and used as a reference surface for machining the reflection surface on each of the circumferential surfaces and an assembling reference surface provided on one of the top an bottom surfaces, shaped in parallel to the machining reference surface, machined to form a rough surface and used as a reference surface for assembling the polygon mirror. The polygon mirror has a high degree of reliability in terms of stable optical characteristic when a polygon mirror and a flange member are bonded with each other.

Polygon mirror, deflecting apparatus, image forming apparatus and method of manufacturing the polygon mirror

A light-beam deflecting apparatus is provided in which a polygon mirror is pushed against a flange to hold it stationary. The light-beam deflecting apparatus includes a base member; a polygon mirror rotatable with respect to the base member; a flange contacting the polygon mirror to hold the polygon mirror; and a pushing member to push the polygon mirror against the flange. One or both of contacting surfaces of the polygon mirror and the flange is/are finished to a surface roughness of Ry, which fulfills a first formula of Ry>3 &mgr;m or a second formula of 3 &mgr;m&lE;Ry&lE;20 &mgr;m.

Growing community of inventors

Hachioji, Japan

Hiroshi Miyakoshi