• 제목/요약/키워드: print material

검색결과 116건 처리시간 0.027초

PD 분류에 있어서 핑거프린트법과 신경망의 비교 (Comparison with Finger Print Method and NN as PD Classification)

  • 박성희;박재열;이강원;강성화;임기조
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2003년도 하계학술대회 논문집 Vol.4 No.2
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    • pp.1163-1167
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    • 2003
  • As a PD classification method, statistical distribution parameters have been used during several ten years. And this parameters are recently finger print method, NN(Neural Network) and etc. So in this paper we studied finger print method and NN with BP(Back propagation) learning algorithm using the statistical distribution parameter, and compared with two method as classification method. As a result of comparison, classification of NN is more good result than Finger print method in respect to calculation speed, visible effect and simplicity. So, NN has more advantage as a tool for PD classification.

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웨이블릿 변환을 이용한 장문인식시스템 (Palmprint recognition system using wavelet transform)

  • 최승달;남부희
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2006년도 심포지엄 논문집 정보 및 제어부문
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    • pp.114-116
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    • 2006
  • This paper is to propose the palm print recognition system using wavelet transform. The palm print is frequently used as the material for the biometric recognition system such as the finger print, iris, face, etc. Since the palm print has lots of properties which include principle line, wrinkles, ridge and so forth, the ways of the implementation of the system are various. In this paper, at first, the palm print image is acquired and then some level of wavelet transform is performed. The coefficients become to be some blocks size of M by N after divided into the horizontal, vertical, diagonal components each level. The mean values, which are calculated with values of each block, are used as the feature vector. To compare between the stored template and the acquired vectors, we adopt the PNN (Probability Neural Network) method.

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Ag가 함유된 전도성 도료의 제조 조건에 따른 고주파 특성 (Microwave Properties of Ag Conducting Paste with Various Preparation Conditions)

  • 박상훈;김정표;성원모
    • 한국전기전자재료학회논문지
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    • 제18권9호
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    • pp.827-832
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    • 2005
  • Dual band internal antennas were fabricated with Ag conducting paste of various preparation conditions and different print thickness by silk screen print. We have investigated microwave properties were compared Ag conducting paste antenna with copperplate antenna at 800 MHz and 1,800 MHz. Gain of Ag conducting paste antenna was improved when preparation conditions were the single size Ag particle, using dry type resin and high Ag containing percent. However, it was lower than that of copperplate antenna within $0.1\~2.0dBi$ at 800MHz. In addition, it was improved at 800MHz when thickness of Ag conducting paste was printed more than skin depth but it was held after critical print thickness. On the other hand, it was reached level of copperplate antenna at 1,800MHz.

스크린 인쇄법에 의한 용존 산소센서의 제조 및 특성 (Fabrication of Dissolved Oxygen sensors by Screen Print Method and Characteristic)

  • 정경진;이성필
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2003년도 하계학술대회 논문집 Vol.4 No.2
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    • pp.926-929
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    • 2003
  • The dissolved oxygen sensor of thick film type was fabricated by screen print method and measured the characteristic, reference electrode used Ag/AgCl, and working electrode used Pt. The devices are continuously powered at potential of $0.7V{\sim}0.8V$ versus Ag/AgCl reference electrode and results indicated that the response characteristic of sensor was $1.002{\mu}A{\sim}19.792{\mu}A$ for thirty seconds. we can know that it is good linearity when compared with of existent dissolved oxygen meter. Therefore sensor fabricated excels sensitivity for dissolved oxygen and will be considered to be applied typically because the price is costly.

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롤프린트(Roll-print) 방식을 이용한 디스플레이의 특허동향(한국, 일본) (Patent Trend Report for Display using Roll-print manufacturing method(KR, JP))

  • 정인성;박지훈
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2007년도 추계학술대회 논문집
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    • pp.35-35
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    • 2007
  • The roll printing technique is the updated technology which will substitute a existing lithography technique for a field of the display such as LCD, PDP, OLED and FED etc. Currently, the patent trend analysis about research and development of the different enterprises are demanded, because it is forecast that the dominion of display market will be exchanged by research and development result of roll-printing technique. In this presentation, it is analyzed on patent trends applied the roll printing technique for a field of the display such as LCD, PDP, OLED and FED etc in Korea and Japan by the various methods.

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압전 프린트 헤드에 의한 금속프린팅의 미세패턴제어 (Micro Pattern Control of Metal Printing by Piezoelectric Print-head)

  • 윤신용;최근수;백수현;장홍순;서상현
    • 한국전기전자재료학회논문지
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    • 제24권2호
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    • pp.147-151
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    • 2011
  • We were analyzed the piezoelectric characteristic for electronics printing to inkjet printing system. These applications were possible use to Actuator, MEMS, FPCB, RFID, Solar cell and LCD color filter etc. Piezoelectric print head is firing from ink droplet control consideration ink viscosity properties. At this time, micro pattern for PCB metal printing was possible by droplet control of piezoelectric driving. These driving characteristics are variable voltage pulse waveform. We are used the piezoelectric analysis software of Finite Element Method (FEM), Piezoelectric design parameters are acquired from piezoelectric analysis, and measurement of piezoelectric. It designed for piezoelectric head to possible electric print pattern of inkjet printing system. For this validity we were established through in comparison with simulation and measurement. Designed piezoelectric specification obtained voltage 98V, firing frequency 10 kHz, resolution 360dpi, drop volume 20pl, nozzle number 256, and nozzle pitch 0.33 mm.

클라우드 컬렉션에 관한 연구 (A Study on the Cloud Collection)

  • 조재인
    • 한국도서관정보학회지
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    • 제43권1호
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    • pp.201-219
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    • 2012
  • 클라우드 컴퓨팅에서 발생된 클라우드 컬렉션은 네트워크상의 또는 물리적 형태의 플랫폼을 통해 도서관간 중복된 장서를 공동 보존 활용함으로써 새로운 가치를 창출시키는 프레임�p을 의미한다. 전자책 시장 활성화와 인쇄본의 소급 디지털화 경향은 라이선스 기반의 전자책 서비스와 도서관 소장 도서의 공동 활용을 추구하는 새로운 장서 관리 패러다임을 예고하고 있다. 본 연구는 디지털 보존과 인쇄본 공동 보존이 상보적 역할을 수행할 수 있는 클라우드 컬렉션의 개념에 대해 논의하고, 한국 대학도서관의 클라우드 컬렉션 도입 방향을 전망해 본다.

산업용 잉크젯 압전프린트 헤드의 특성해석 및 잉크 망점제어에 의한 PCB 전기회로패턴 공정개선 (Process Improvement of PCB Electric Circuit Pattern by Ink Drop Jetting Control and Characteristics Analysis of Industrial Inkjet Piezoelectric Print Head)

  • 윤신용
    • 전기학회논문지P
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    • 제65권1호
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    • pp.57-65
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    • 2016
  • This paper was analyzed the characteristics of piezoelectric inkjet print head using finite element method(FEM). It showed the bending node driving of piezoelectric and relation theory principle consider piezoelectric material characteristics and ink characteristics. From such result we were had the piezoelectric head design and manufacture. It got a this head characteristics through experiment, we confirmed that proper voltage control is possible to through ink drop control experiment of piezoelectric print head. This paper was obtained the suitable ink jetting characteristics that manufacture the control circuit and piezoelectric inkjet print head. This practice product was applied to improvement of PCB electric circuit pattern by etching resist ink that PCB manufactured to complex process over traditional 6 stages can be simpled to 1 stage by inkjet printing technology.

환경 인쇄 기술의 발전과 인쇄물의 $CO_2$ 발생량에 관한 연구 (A Study about Development of Environment Printing Technology and $CO_2$)

  • 이문학
    • 한국인쇄학회지
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    • 제30권3호
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    • pp.89-114
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    • 2012
  • For as to world, the concern about the environment problem is enhanced than any other time in the past because of being 21 century. And the environment problem is highlighted as the world-wide issue. The time of the environment problem intimidates the alive of the mankind and presence of an earth over the time. It becomes the essentiality not being selection in the personal living or the economical viewpoint now to prepare for the climatic modification. As to the company management, the green growth period which it excludes the environment management considering an environment, cannot carry on the company the continued management comes. That is, in the change center of the management paradigm, there is the environment management. Nearly, the greenhouse gas which the publication industry is the environmental toxic material like all industries is generated. The greenhouse gas is ejected in the process of running the manufacturing process and print shop of the various kinds material used as the raw material of the book. Particularly, the tree felling for getting the material of the paper is known to reach the direct influence on the global warming. This study does according to an object it considers and organizes the environment parameter based on this kind of fact as to the publication industry. And it is determined as the reference which is used as the basic materials preparing the case that carbon exhaust right transaction(CAP and TRADE) drawing are enforced in all industries and is sustainable the management of the publication industry and reduces the environmental risk among the company many risk management elements and plans and enforces the publication related policy that there is a value. In the printing publication industry, this study tried to inquire into elements discharging the environmental pollutant or the greenhouse gas. Additionally, in the printed publication production process, it tried to inquire into the effort for an environment-friendly and necessity at the printing paper and the printers ink, regarded as the element discharging the greenhouse gas all kinds of the printing materials, operation of the print shop and all kinds of the machines and recycle process, and etc. These considerations make these industrial field employees aware of the significance about a conservation and environmental protection. They try to give a help in the subsequent study producing quantitatively each environmental parameter emission of green house gas. This makes the calculation of the relative $CO_2$ output reproached ultimately possible. Meanwhile, in a sense, many research protects and improving an environment in connection with the contents of research at the printing publication industrial field is in progress. There will be the voluntary human face that it has to protect an environment but this can not do by the outside factor according to all kinds of environment related law and regulation. Anyway, because of acting on company management as the factor of oppression, the increase of this environment-related correspondence cost could know that the research that the environment loading relates with a procurement and development, environment management system introduction, quality control standard, including, normalizing including a material, and etc. through the part of the effort to reduce the cost low was actively in progress. As to the green growth era, as follows, this paper prescribed the subject and alternative of the print publication industry. It is surrounded by the firstly new digital environment and the generation of the subject. And secondly the printing industry is caused by the point of time when the green growth leaves by the topic which is largest in the global industry and it increases. The printing publication industry has to prepare the bridgehead for the environment-friendly green growth as the alternative for this resolution with first. The support blown in each industry becomes the obligation not being selection. Prestek in which the print publishing was exposed to spend many energies and which is known as the practice of the sustainable print publishing insisted that it mentioned importance of the green printing through the white pages in 2008 and a company had to be the green growth comprised through the environment-friendly activity. The core management for the sustainable printing publication industry presented from Presstack white pages is compacted to 4 words that it is a remove, reduce, recover, and recycle. Second, positively the digital printing(POD) system should be utilized. In the worldwide print out market, the digital printing area stops at the level of 10% or so but the change over and growth of the market of an analog-to-digital will increase rapidly in the future. As to the CEO Jeff Hayes of the Infoland, the offset print referred to that it of the traditional method got old and infirm with the minor phase of the new printing application like the customer to be wanted publication and the print of the digital method led the market. In conclusion, print publishers have to grasp well the market flow in the situation where a digitalization cannot be generalized and a support cannot avoid. And it keeps pace with the flow of the digital age and the recognition about the effort for the development and environment problem have to be raised. Particularly, the active green strategy is employed for the active green strategy.