• 제목/요약/키워드: Print Materials

검색결과 156건 처리시간 0.024초

스크린 인쇄법의 공정 조건이 전극 패턴 균일성에 미치는 영향 (Effects of Process Conditions on Electrode Patterning by Screen Printing Method)

  • 이나영;김동철;여동훈;이주성;윤상옥;신효순;이준형
    • 한국전기전자재료학회논문지
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    • 제33권5호
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    • pp.355-359
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    • 2020
  • In this study, image analysis and surface roughness measurements using an optical microscope are presented as a method to quantitatively evaluate the results of screen printing. Using this method, the squeegee speed, which is the printing process condition, and the printability of the electrode according to the screen mesh were evaluated. Increasing the squeegee speed in the printing process acts as a process element that increases the line width precision of the printed electrode and lowers the surface roughness of the printed surface. Furthermore, the edge roughness, which indicates the clarity of printing, was not significantly affected by the speed of the squeegee during printing. The print thickness increases in proportion to the squeegee speed, but is largely dependent on the screen thickness.

패션의 사이버펑크(Cyberpunk)개념 분석에 관한 연구 (A Study on the Analysis of Cyberpunk Concepts in Fashion)

  • 한명숙;이민경
    • 복식문화연구
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    • 제6권2호
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    • pp.55-65
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    • 1998
  • Actually, Cyberpunk is a compound word joined by cybernetics, which was used in control theory, and punk, was symbolized as anti-culture. Today, however, the definition of the term has been extended by various fields, used in many meanings. Therefore, the purpose of this study was to apply the Cyberpunk concepts to understand today s fashion because understanding of the present fashion is a means to interpret our culture. For this purpose, the phenomenon of Cyberpunk in fashion was subdivided into three factors material, color, and style. The results of the study were as follows : First, the materials used were techno material, special print by computer for future feeling and geometrical pattern, optical pattern to improve visual effects. Second, the colors mainly used were silver, black and white, bright color, and off-color of computer animation to present future-oriented feeling. Third, the general styles used were fit and slim, simple and liner, dualistic style to express future s image. In conclusion, the phenomena of Cyberpunk in fashion were expressed in material, color and style of fashion. Cyberpunk fashion was evident in T-shirts, sweaters, jackets, or as items of ornamentation such as pins, pendants, belts, and earrings, etc.

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식각 표면패턴의 사출성형에 관한 실험적 연구 (An Experimental Study on Injection Molding of Etched Surface Pattern)

  • 황금종;이희관;양균의
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2002년도 춘계학술대회 논문집
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    • pp.583-586
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    • 2002
  • Molding properties of etched surface pattern are presented. Specimens, whose surface patterns are made by print-type etching, are investigated. The molding properties of surface pattern are estimated with roughness deviation of surface pattern on part and mold. The etching properties are related to physical properties of plastic materials and surface roughness of etched pattern. Also, flow mark and gate location can give influence on surface pattern molding. The experimental result can contribute to good molding of surface pattern in injection molding.

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"삼략"의 간행과 판본 연구 (A Bibliographical Study of "Sam-Ryak(三略)")

  • 남권희
    • 한국도서관정보학회지
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    • 제33권3호
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    • pp.359-392
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    • 2002
  • 이 연구는 고대 무경칠서 가운데 하나로 군사학 이론서로서인 삼략의 판본을 조사하여 판본에 대한 개괄적인 분석과 판본의 선후 문제 및 계통을 세우고자 하였다. 또한 아직까지 알려지지 않았던 새로운 판본과 언해본의 소개를 통하여 서지학 및 국어학 관련분야의 연구에 보탬이 되고자 하였다.

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열응력과 잔류응력하의 다층박막의 피로수명 해석 (Fatigue Life Analysis on Multi-Stacked Film Under Thermal and Residual Stresses)

  • 박준협
    • 대한기계학회논문집A
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    • 제29권4호
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    • pp.526-533
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    • 2005
  • Reliability problem in inkjet printhead, one of MEMS devices, is also very important. To eject an ink drop, the temperature of heater must be high so that ink contacting with surface reaches above $280^{o}C$ on the instant. Its heater is embedded in the thin multi-layer in which several materials are deposited. MEMS processes are the main sources of residual stresses development. Residual stress is one of the factors reducing the reliability of MEMS devices. We measured residual stresses of single layers that consist of multilayer. FE analysis is performed using design of experiment(DOE). Transient analysis for heat transfer is performed to get a temperature distribution. And then static analysis is performed with the temperature distribution obtained by heat transfer analysis and the measured residual stresses to get a stress distribution in the structure. Although the residual stress is bigger than thermal stress, thermal stress is more influential on fatigue life.

Strategies to Increase Exercise Compliance and Adherence for Breast Cancer Survivors: A Descriptive Review

  • Yang, Paul;Foroughi, Nasim;Kilbreath, Sharon
    • 국제물리치료학회지
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    • 제1권2호
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    • pp.79-90
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    • 2010
  • Breast cancer is the most frequently diagnosed cancer primarily affecting women and negatively impacting the individuals, families, and the health care system. Despite the well-known benefits of exercise for breast cancer survivors, rate of physical activity declines during adjuvant therapy and may not return to pre-diagnosis levels. In addition, low levels of adherence to exercise have been observed in this cohort. The challenge is to identify strategies that are effective in promoting exercise adherence. Several of the studies use social cognitive theory as a theoretical framework to design exercise interventions that encourage adherence. Within and without this framework, they have implemented interventions within the home and gym-based environments. Strategies used to encourage adherence to exercise programs and which are readily implemented in most situations have included distribution of print materials and pedometers, as well as recommendation from the oncologist. Other strategies that may be less feasible have included provision of trainers, gym memberships, regular phone-calls, and psychologist-lead stress management sessions.

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도서관에서의 비도서자료의 활용에 관한 경험적 연구 -사회과학 도서관을 중심으로- (An Empirical Study on the Use of Non-Book Materials in the library of Social Science)

  • 강미혜
    • 정보관리학회지
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    • 제11권2호
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    • pp.49-66
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    • 1994
  • 본 연구는 도서관에서의 비도서자료의 활용과 비도서자료에 대한 사서들의 인식 및 의견을 조사하였다. 설문지를 사용하여 129개의 데이터를 한국사회과학정보자료기관협의회의 31개 회원도서관과 98명의 사서로부터 수집하여 분석하였다. 분석결과, 도서관에서의 비도서자료의 활용은 매우 중요하다는 것이 밝혀졌다. 따라서 비도서자료의 활용은 좀더 활성화하기 위한 서지통정을 제안하였다.

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식각 표면패턴의 사출성형에 관한 실험적 연구 (An Experimental Study on Injection Molding of Etched Surface Pattern)

  • ;이희관;양균의
    • 한국정밀공학회지
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    • 제20권2호
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    • pp.25-32
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    • 2003
  • Molding properties of etched surface pattern are presented. Injection molding has given attention on improving dimensional accuracy and productivity. However, the molding of etched surface pattern on plastic parts is not researched relatively for its additional values, which can meet design function and customer's attraction. Specimens, whose surface patterns are made by print-type etching, are investigated. The molding properties of surface pattern are estimated with roughness deviation of surface pattern on part and mold. The etching properties are related to physical properties of plastic materials and surface roughness of etched pattern. Also, flow mark and gate location can give influence on surface pattern molding. The experimental result can contribute to good molding of surface pattern in injection molding.

프탈로시아닌계 광전도성 유기박막의 제조에 관한 연구 (A study on the preparation of phthalocyanine optoelectric thin films)

  • 박구범;조기선;이덕출
    • E2M - 전기 전자와 첨단 소재
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    • 제7권5호
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    • pp.409-416
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    • 1994
  • A double layered photoreceptor using phthalocyanine dye was made by dip-coating method. The under cutting layer(UCL) was coated with A1$\_$2/O$\_$3/ or polyamide, and the charge generation layer(CGL) was formed by .tau.-type metal-free phthalocyanine. The oxadiazole was used as a charge transport layer(CTL) and polycarbonate and poly(vinyl butyral) was employed as a host polymer. The .tau.-H$\_$2/Pc had an absorption peak around 780nm, which coincided with the emitting wavelengths of GaAlAs diode lasers. Maximum charge acceptance of CTL that gives thickness of 12.mu.m was -900V by corona charge of -6.0kV. In photo-induced discharge measurements, residual potential was less than -20V and sufficient for ordinary use, and sample films using of poly(vinyl butyral) was showed good charge retention. In printing test, drum that was employed polycarbonate as a host polymer showed the good print quality.

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Coating Immobilization Using Soy Protein Polymers: Technical Concepts and Importance to Quality

  • Hiscock, Donald F.;Merrifield, Thomas B.
    • 펄프종이기술
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    • 제32권5호
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    • pp.60-66
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    • 2000
  • Coating immobilization is the process by which the wet coating applied to paper or paperboard reaches the final form. A coating immobilization point is defined as the solids content reached during drying where no further redistribution of coating materials occurs. Good control of coating immobilization is important in producing coated paper and paperboard with consistent high quality. This paper discusses the technical concepts of how coatings immobilize, and describes the importance of good immobilization control on coating holdout and coating structure. The use of soy protein polymers to modify the coating immobilization point is discussed. Soy proteins, because of their interaction with coating pigments, make a significant contribution to the immobilization characteristics of coastings. This technology gives the formulator options for changing the immobilization point to improve the performance of the coating. The importance of immobilization on casting uniformity, microporosity and sheet qualities is discussed, including binder migration, mottle, gluing, and print quality.

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