The use of ultra-violet curable resins as bonding agent can greatly reduce production cost by shortening the curing time from hours to minutes and by reducing air polluting fumes compared with thermosetting resins. Dicing blades with ultra-violet curable resins have been developed to enhance such advantages. A new conceptional blade has been proposed and developed, which is called a three-layered dicing blade. It has the structure composed of an inner layer with coarse abrasives for cutting and an outer layer with fine abrasives for finishing up at the same time. And in order to optimize uneven wear between the inner-and-outer layers of the blades, concentration of diamond abrasives in outer layer was increased and some kinds of fibers were mixed with resin as filler. As a result of the cutting experiments, in comparison with thermosetting resin blade and other single-layered ultra-violet curable resin blades, cutting performances have been improved.

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The thermosetting resin has been used as the bonding agent to produce traditional dicing blades. lt takes usually several hours for curing process and requires lapping process to true the blade shape. These are the causes of high manufacturing costs. In general, the use of ultra-violet curable resin as the bonding agent can greatly reduce manufacturing costs by reducing the curing time from hours to minutes. Dicing blades with ultra-violet curable resin have been developed to solve such problems. We proposed and developed a new producing method to obtain ultra thin dicing blades with ultra-violet curable resin. lt is called the spin-coating process using centrifugal force that drives deposited resin flow radically outward on the disk. And in order to improve the mechanical characteristics of the blades, some kinds of abrasive grains and fibers as the filler were mixed with resin. With those blades we have carried out the cutting tests on silicon wafers. As the result, in comparison with the existing thermosetting resin blade, the mechanical characteristics and the chipping distributions have been improved.

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は，室温では液体であるが，紫外線を樹脂に照射することで光開始反応と重合反応が進行し，わずか数秒程度で固体に変化する。この化学反応によりの中では，四方八方に広がった網目構造が形成される。この網目構造はがすぐに固まるという性質と深く関係していると考えられている。ここでは，美容業界で使われている（ジェルネイル）の基礎的な内容について解説する。

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Cross-linking structure of cross-linking polymers, especially for acrylate-type ultraviolet (UV)-cured resin, was characterized using specific decomposition methods. At first the cured resin sample was analyzed by pyrolysis-gas chromatography (Py-GC) in the presence of organic alkali, tetramethylammonium hydroxide (TMAH). A series of methyl acrylate (MA) oligomers (up to hexamers) were observed in the pyrograms, which were formed through thermally assisted hydrolysis and methylation selectively occurred at ester linkages in the UV-cured resin.
Moreover, acrylate-type UV cured resins were also characterized by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) combined with supercritical methanolysis of the samples. The MALDI mass spectrum of the methanolysis products contained a series of peaks related to MA oligomers up to around 50-mers, which cannot be observed by Py-GC in the presence of TMAH. Furthermore, the methanolysis products were fractionated by size exclusion chromatography followed by the MALDI-MS measurements of the individual fractions. The MALDI mass spectrum of the highest molar mass fraction showed a broad peak up to m/z ca. 180, 000. The observed distributions of the decomposition products suggested that the network junctions in the UV-cured resin were composed of up to around 2, 000 acrylate units.

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従来のブレードには，導電性がないため現行マシンのゼロ点検知機能の適用化が不可能であった．そこで，導電性のある樹脂とフィラー等を添加することにより導電性のある樹脂ブレードの開発を検討した．また，ブレードの外層に微粒を，内層に粗粒を配したサンドイッチ構造の3層ブレードを検討し，切断しながら仕上げもできる高機能を持つの導電性3層ブレードを開発した．

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This study deals with the simultaneous measurement of the flow and stress of ultraviolet (UV) curable resin illuminated at UV ray. The flow is observed as particle trajectory patterns obtained using a particle tracking velocimetry technique, and stress as isochromatics, principal-stress directions and shear 45° obtained using a photoelastic technique, respectively; The specimens consist of glass plates, acrylic plates and UV curable resin in liquid form with acrylic powder. The specimens are illuminated with UV rays downwards from the upper side of the specimens, and the visual and photoelastic images of the resin in curing process are captured at a constant time interval using a digital and CCD cameras, respectively. Results indicated that the stresses in the resin during the curing, process depended on the degree of contact between the mold and the cured part of the resin and were almost independent on the flow of the uncured resin.

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ボードレベル・チップレベルの光インターコネクションでは光デバイス(VCSEL・PD)と光導波路との容易かつ高効率なアライメント技術の確立が普及のキーポイントの一つである。そこで、我々はUV硬化性樹脂を用いたフォトマスク転写法により安易かつ高効率なアライメントを実現するビルトイン光接続ロッドを備えた光モジュール技術を提案してきたが、今回光配線板との接続について検討した。

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Braille is a well-known communication tool for the visually impaired. In recent years, as a result of advances in Braille printing technology, the use of transparent resinous ultraviolet cured type (TRUCT) Braille has spread rapidly. As one of the most popular Braille printing technologies, the screen printing method is applied for printing TRUCT Braille. However, the screen printing method produces TRUCT Braille prints of poor quality. In this study, in order to improve the printing quality, we created a device for printing TRUCT Braille. Additionally, we evaluated TRUCT Braille readability for Braille beginner readers by focusing on horizontal and vertical Braille dot distances using our created device. From this study, we found that it was easy to print TRUCT Braille using our device. Braille beginner readers found it easy to read TRUCT Braille with adequate horizontal and vertical Braille dot distances. These findings support the use of TRUCT Braille for new Braille beginner textbooks, as well as for printing Braille signs in public facilities.

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This study deals with the movement of ultraviolet (UV) curable resm illuminated at UV ray The movement is observed as particle trajectory patterns obtained using a particle tracking velocimetry technique The specimens consist of glass plates, acrylic plates, vinyl tape and UV curing resin m liquid form with acrylic powder. The specimens are illuminated with UV rays downwards from the upper side of the specimens, and the images of the resin in curing process are captured at a constant time interval using a digital camera Results indicate that the movement of UV curable resin in curing process is affected by the stiffness of the bottom of molds.

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Japan has the highest rate of increase with respect to the population of senior citizens. More products, facilities, and services that are accessible to a wider range of people, regardless of their physical qualities or disabilities, are becoming popular. In this study, we focused on visual impediment. Printing braille and tactile maps with clear and colorless ultraviolet curable ink is usually done by screen printing. However, it is pointed out that end result of printed material manufactured by this method is poor quality. Therefore, we developed new printer for braille and tactile map, that clear and colorless ultraviolet curable ink was jetted by nozzle quickly. Furthermore, monitoring evaluation was conducted by several people actually using the Braille manufactured by the new printer. From this monitoring evaluation, we obtained a good appraisal for the braille.

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マニキュアは, プレパラート標本のカバーガラスのシーリングに用いられる。しかし, その乾燥には時間がかかるだけではなく, アセトンやブチル酢酸などの有機溶剤の刺激臭があるため, 学校の授業での使用は避けたほうがよい。は, 表面コーティングや接着あるいはシーリングに使用される工業用素材であるが, ネイルアートではマニキュアの代わりに利用される。この液体状の樹脂はUVA波長（315～400 nm）の照射によって数分間で硬化するため, 作業時間が短縮できるだけではなく臭気も弱い。そこで本研究ではメチレンブルー水溶液を封入したプレパラート標本を用いて, 数種類のの水分の蒸発抑制能について検討した。その結果, プレパラート標本を20℃2週間でインキュベートした場合, はマニキュアよりも有意に水分蒸発を抑制した。によるシーリング法はその扱いやすさと保存率の高さから, マニキュアの代替になるだろう。

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We proposed the new process to encapsulate liquid in MEMS devices, which is named BiLT (Bonding in Liquid Technique). In BiLT liquid encapsulation can be without bubbles and leakage of liquid. This technique makes the process of a new MEMS device encapsulated liquid easier. In this research, we evaluated the bonding strength in BiLT especially. We experimented the 180 degrees peel-tests, which used 6 types of devices bonded in DI water, glycerin, acetone, isopropyl alcohol, PBS, and air. In this result, we found that the bonding-strength depend on the types of liquid, and is increased depending on time. So we indicate the efficiency of BiLT in bonding strength.

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本研究の金型製作方法は，従来の除去加工による金型製作に比べ，製作期間が短くなり，金型の設計モデルがあれば，最短で1日で金型が完成した．短納期でプラスチック成形を行う技術として，

製AMでプラスチック射出成形用樹脂型を製作する技術も報告されているが，樹脂型では不可能であった成形温度が高い成形材料の射出成形も可能になる．

製AMで造形した雄型（以降、反転型）と粉末冶金技術を用いたプラスチック射出成形用金型製造技術を開発した．金型の製作に必要な基礎データの取得を目的とし，粉体材料をFe100％として実験を行った．反転型の形状を設計する際に重要な圧縮応力とひずみの直線関係を「密封状態におけるAM造形物の圧縮試験」で明らかにした．「焼結温度の評価」から，この金型製作技術に必要な焼結温度が973K（700℃）以上であることが分かった．「焼結前粉体圧縮圧力の評価」を行い，粉体圧縮成形時に必要な圧力が250 MPa（約2.5 t/cm²）で金型の製作が可能であることが分かった．

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