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그라비아 인쇄롤의 망점 형성을 위한 포토레지스터 코팅층의 레이저 직접 페터닝
서정,이제훈,한유희 한국레이저가공학회 2000 한국레이저가공학회지 Vol.3 No.2
Laser direct patterning of the coated photoresit (PMER-NSG31B) layer was studied to make halftone dots on gravure printing roll. The selective laser hardening of photoresist by Ar-ion laser(wavelength : 333.6nm~363.8nm) was controlled by the A/O modulator. The coating thickness in the range of 5㎛~11㎛ could be obtained by using the up-down directional moving device along the vertically located roll. The width, thickness and hardness of the hardened lines formed under laser power of 200~260mW and irradiation time of 4.4~6.6 μ sec/point were investigated after developing. The hardened width increased according to the increase of coating thickness. Though the hardened thickness was changed due to the effect of the developing solution, the hardened layer showed good resistance to the scratching of 2H pencil. Also, the hardened minimum line widths of 10㎛ could be obtained. The change of line width was also found after etching, and the minimum line widths of 6㎛ could be obtained. The hardened lines showed the good resistance to the etching solution. Finally, the experimental data could be applied to make gravure halftone dots using the developed imaging process, successfully.
폴리머 다이렉트 그라비어 인쇄법에 의한 미세패턴 전극 개발
남수용 ( Su Yong Nam ),구태희 ( Tae Hee Ku ),김성빈 ( Sung Bin Kim ) 한국화상학회 2013 한국화상학회지 Vol.19 No.4
To complement the benefits of gravure offset printing method, by using the polymer direct gravure printing method, we examined the formation of the fine electrode pattern for touch panel. Two different types of molecular weight epoxy binder and three kinds of silver powder and carbon powder were prepared making Ag paste and the electrode pattern formation and their properties were investigated. As a result, it was possible that the conductive and adhesion are more excellent Ag paste as prepared in epoxy binder of high molecular weight and flake / spherical hybrid. To implement the 30/30㎛ pattern, it was possible to know that about 3.6 is appropriate for TI value. In conclusion, it found that the formation of the 30/30㎛ electrode pattern can be polymer direct gravure printing method in roll-to-roll printing.
롤투롤 인쇄 시스템에서의 기판 소재의 거칠기와 표면에너지를 이용한 잉크 전이에 대한 연구
신기현,김호준,Shin, Kee-Hyun,Kim, Ho-Joon 한국반도체디스플레이기술학회 2010 반도체디스플레이기술학회지 Vol.9 No.2
An ink transfer is modeled and experimentally verified using roll-to-roll electric direct gravure printing process. The ink transfer model based on the physical mechanism for the maximum ink transfer rate is proposed, and experimented by the electric printing machine in FDRC for the relations of the maximum ink transfer rates to the printing pressure, the operating speed, the operating tension, the surface roughness of substrates, and the contact angle between substrate and silver ink. The free ink split coefficient and immobilized ink under the maximum ink transfer rate are calculated by the physical parameter in a printing process and contact angle between substrates and ink. Numerical simulations and experimental studies were carried out to verify performances of the proposed ink transfer model. Results showed that the proposed ink transfer model was effective for the prediction of the amount of transferred ink to the substrate in a direct gravure printing systems.