• Journal of environmental and Sanitary engineering
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• v.13 no.3
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• pp.66-71
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• 1998

This study was investigated to evaluate worker exposures to organic solvents by type of print industry. Results were as follows; 1. Workers were exposed to mixture of toluene, isopropyl alcohol(IPA), methyl ethyl ketone(MEK), n-hexane, ethylacetate(EA), acetone. The components of high exposure solvents were toluene, IPA and MEK. 2. Considering additive effects of the compounds, exposure indices(Em) were calculated. The Mean of exposure indices were 1.79 for Gravere, 0.41 for Screen and 0.14 for Opset workplace. The workers of Gravere workplace were estimated to overexpose for solvents. 3. The highest overexposed solvent was toluene for a single component. The rate of overexposed level for toluene was 7.41% for some print workplace and for mixed solvent was 1.85％. 4. Local exhaust systems were inappropriate and respiratory protective devices were not supplied to the workers. 5. Sound level was over 90dB(A) in Opset print workplace and some measures should be performed to get down the sound level.

• 프린팅코리아
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• v.13 no.9
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• pp.51-60
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• 2014

변화하는 인쇄산업의 비전을 제시해 준 국내 최대 인쇄인의 축제 K-PRINT Week가 지난 8월 27일(수)부터 30일(토)까지 'K-PRINT Week! 새로운 미래를 인쇄하다'라는 주제로 일산 킨텍스 제2전시장 7, 8홀에서 열렸다. 대한인쇄문화협회와 한국이 앤엑스가 공동으로 주최한 이번 전시회는 일산 킨텍스 제2전시장 7, 8홀에서 1만$6935m^2$ 규모로 27개국 275개사가 참가한 가운데 진행됐다. K-Print Week 2014는 최근 인쇄산업이 다양한 산업 분야로 확장되고 있는 인쇄시장의 트렌드에 맞춰 기존의 국제인쇄기자재전(KIPES)과 함께 한국레이블전, 한국인쇄패키지전, 한국디지털인쇄 솔루션전 등 4개 인쇄 관련 전시회가 통합 개최된 것으로, 지난 전시회보다 많은 바이어가 방문해 내수상담과 수출상담이 이뤄졌다. 또한 대한인쇄문화협회가 주최한 '친환경 무습수 인쇄기술의 현황과 전망' 국제컨퍼런스를 비롯한 다양한 세미나가 개최돼 방문객들에게 큰 관심을 불러 일으켰다.

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.427-428
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• 2006

This paper presents an image fingerprinting scheme for the print-to-capture model performed by a photo printer and digital camera. When capturing an image by a digital camera, various kinds of distortions such as noise, geometrical distortions, and lens distortions are applied. slightly and simultaneously. In this paper, we consider several steps to extract fingerprints from the distorted image in print-and capture scenario. To embed ID into an image as a fingerprint, multi-bits embedding is applied. We embed 64 bits information as a fingerprint into spatial domain of color images. In order to restore a captured image from distortions a noise reduction filter is performed and a rectilinear tiling pattern is used as a template. To make the template, a multi-bits fingerprint is embedded repeatedly like a tiling pattern. We show that the extracting is successful from the image captured by a digital camera through the experiment.

• Journal of the Semiconductor & Display Technology
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• v.19 no.2
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• pp.26-30
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• 2020

In this paper, we studied the problem if the experiment number occurring in order to identify defect in scaffold. We need to change each of the 5 print factor to predict defect when printing disk type scaffold using FDM 3d printer. So then the number of scaffold print will be more than 100,000 times. This experiment number is difficult to perform in the field. In order to solve this problem, we have produced a prediction model based on machine learning multiple linear regression using print conditions and defect scaffold data for print conditions. The prediction model produced was verified through experiments. The verification confirmed that the error was less than 0.5 %. We have confirmed that satisfied within the target margin of error 5 %.

• Journal of the Korean Home Economics Association
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• v.30 no.4
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• pp.1-13
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• 1992

A computer simulation method for textile designs was developed using a generic-purpose graphics program, LUMENA and its results were applied for costume design simulation. Its design performance was comparable with those using specialized design package programs which are in general very expensive. Three areas of textile design, print pattern design, weaving design, and knitting design, were covered. In the print pattern design simulation, a gird network library was constructed by using basic methods of repeat, and a pattern library by scanning existing print patterns. Through the modification and synthesis of library patterns, many new print patterns could be obtained. In the weaving design simulation, a thread library and a draw-down library were constructed. Using them, simulations of woven textile structures were carried out. In the knitting design simulation, a stitch library and a detail library were made from various types of knit stitch and detail drawings of knit costume, respectively. They were used to make structural knitting patterns and jacquard knitting designs. Using those simulated textile designs, costume design simulation was carried out.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.10a
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• pp.92-93
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• 2017

Before showing the real house, generally a broker shows the blue print of the house to a customer who looks for houes to reside. However, it is difficult to for the customer to realize the house in detail by the blue print. To solve this problem, meet develop model house system using the virtual reality technology. The develop system shows the blue print of the house in 3D on the android device and make it possible for the user to move in the house projected virtually by using controllers.

• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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• 2008.04a
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• pp.129-134
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• 2008

Properties of newly developed paper from Red Algae Pulp (RAP) were examined. The paper samples were prepared by mixing RAP fiber with wood fibers, HwBKP and SwBKP, to form a paper with $60g/m^2$ in weight. It was prepared in three to four different levels of refining degree and pressure so that it can reveal different bulk level in order to clearly compare the opacity at equivalent bulk for each furnish compositions. Printability of RAP fiber revealed superior effect on print through repression and initial ink absorption. Those properties are expected to improve further if printability improvement effect due to smoothness improvement is added.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2006.04a
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• pp.70-71
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• 2006

• 프린팅코리아
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• v.13 no.9
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• pp.94-95
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• 2014

현재 PUR 제책은 무선철 책자 생산 공정에서 없어서는 안될 중요한 기술로 진화하고 있다. 스위스 도심에 위치한 Sudostschweiz Presse und Print AG는 최근 판테라 기종에 뮬러마티니의 PUR 시스템을 추가 장착함으로써 기존의 핫멜트 방식과 함께 PUR 방식의 무선철 책자를 효율적으로 생산하고 있다.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.38 no.2 s.115
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• pp.16-21
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• 2006

Uneven ink transfer of a print can be traced to several causes such as an incomplete contact between the paper surface and ink film, a coarse pattern of a continuous ink film after transfer, uneven absorption, etc. Uneven ink transfer was studied in this points by the Tollenaar. Uneven distributions of printed density are reflected in low ${\ulcorner}m{\lrcorner}$ values of the print. Tollenaar's smoothness coefficient ${\ulcorner}m{\lrcorner}$ value was important factor that deciding printed quality which was easily obtain by densitometry. Limiting print density $D_{\infty}$ that obtained Tollenaar's formulation working as a influence factor at the printed quality. In this study, we obtained limiting print density $D_{\infty}$ and smoothness coefficient ${\ulcorner}m{\lrcorner}$ value of domestic newspapers and foreign newspapers. And we analyzed about properties of the newspaper. The result of this study, smoothness coefficient ${\ulcorner}m{\lrcorner}$ value and limiting print density $D_{\infty}$ showed the good results in the low porosity and low roughness newspaper. Datum which obtained by this study was used as printability factor for the quality control and improvement of domestic newspaper and wished to apply as a basic data for the domestic newspaper quality.