• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.2
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• pp.243-247
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• 2009

Primary charging roller is rotated with contacting surface of OPC drum and take charge OPC drum. Owing to this reason, primary charging roller is made by elasticity substance with electric conduction. Properties of charging and image is changed by class of coating, method of coating and environment. This study developed coating material and coating method to make print image of good quality.

• Tribology and Lubricants
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• v.23 no.4
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• pp.143-148
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• 2007

The surface defects of an aluminum tube for an OPC drum have been analyzed using a scanning microscopy(SEM) and an energy dispersive X-ray analyze.(EDX). The SEM/EDX system, which may provide good information on the surface defects and their distributions, provides an optical diameter of an impurity and a chemical composition. These are strongly related on the coated film thickness and quality of an OPC drum, which is a key element of a toner cartridge for a laser printer. The experimental results show that the local deformations, scratch wear, and flaws are produce the non-uniform coating layers, which may be removed by a manufacturing process of an aluminum tube. The major parameters on the coating quality of an OPC drum are the impurities of an aluminum tube such as silicon, oxygen, calcium, carbon, sulphur, chlorine, and others. These impurities may be removed by an ingot molding, extrusion and drawing, quality control, and packing processes with a strict manufacturing technology.

• Tribology and Lubricants
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• v.23 no.3
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• pp.103-108
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• 2007

In this paper, the optimized design and strength analysis have been presented based on the finite element and Taguchi's experimental methods. The stress, strain and displacement characteristics of OPC drum tubes are affected by rolling contact pressures between an OPC drum tube and a paper, design parameters of an aluminum tube and material properties. The OPC drum tubes with nine different geometrical models are analyzed for design parameters that are related to the outer diameter, the thickness, and the length of an aluminum tube for a toner cartridge. The optimized design parameters for an aluminum tube may be selected as the outer diameter of 28 mm, the thickness of 0.8 mm, and the length of 220 mm. But the currently used aluminum tube for a laser printer is fairly optimized based on the Taguchi's design analysis. The calculated FEM results showed that the affection ratio of the design parameter t, which may control the strength of an aluminum tube, is the most influential parameter among the length and an outer diameter of a tube.

• Tribology and Lubricants
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• v.23 no.3
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• pp.89-94
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• 2007

The stress and displacement behavior analysis of an aluminum tube for an organic photo conductor drum has been presented using a finite element analysis technique by non-linear FEM program. The maximum displacement in the radial direction of OPC drum may directly affect to the quality of printed matter. Thus, the deformed profile of the aluminum tubes should be limited depending on the toner powder size and the contact rolling forces between an OPC drum and a paper. This paper recommends the critical loading of 400 Pa for the provided toner size, $8{\mu}m$ for excellent printed matters and long life of the toner cartridge.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.9 no.2
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• pp.347-351
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• 2008

Primary charging roller rotated with contacting surface of OPC drum and take charge OPC drum. Owing to this reason, primary charging roller made by elasticity substance with electric conduction. Properties of charging and image changed by class of coating, method of coating and environment. This study developed about coating method to make print image of good quality.

• Proceedings of the KAIS Fall Conference
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• 2007.11a
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• pp.74-77
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• 2007

Primary charging roller rotated with contacting surface of OPC drum and take charge OPC drum. Owing to this reason, primary charging roller made by elasticity substance with electric conduction. Properties of charging and image changed by class of coating, method of coating and environment. This study developed about coating method to make print image of good quality.

• Proceedings of the KAIS Fall Conference
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• 2007.11a
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• pp.170-173
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• 2007

Primary charging roller rotated with contacting surface of OPC drum and take charge OPC drum. Owing to this reason, primary charging roller made by elasticity substance with electric conduction. Properties of charging and image changed by class of coating, method of coating and environment. This study developed about coating material and coating method to make print image of good quality.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.10
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• pp.3923-3927
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• 2010

Primary charging roller rotated with contacting surface of OPC drum and take charge OPC drum. Owing to this reason, primary charging roller is made by elasticity substance with electric conduction. Properties of charging and image is changed by class of coating, method of coating and environment. This study developed coating material and coating method to make Image Forming of High- quality.

• Proceedings of the KIPE Conference
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• 2015.07a
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• pp.219-220
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• 2015

본 논문에서는 높은 성능의 속도 제어 특성을 만족하기 위해 위치 기반의 반복제어기를 이용한 속도 제어기를 설계 하여, 레이저 프린터의 OPC 드럼의 속도제어에 적용 하였다. 레이저 프린터 OPC 드럼의 외란은 드럼의 위치에 종속적으로 나타난다. 따라서 위치 기반 반복제어기는 기존의 반복제어기 보다 기준 속도 변동에 강인하며, 레이저 프린터의 다양한 인쇄 속도에 적용 가능하다. 실험 결과, 위치기반 반복 제어기가 기존의 반복제어기 보다 기준 속도 변동에 강인하며 다양한 인쇄 속도에서도 적용 가능함을 보여주었다.

• Journal of the Korean Society for Heat Treatment
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• v.19 no.3
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• pp.156-162
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• 2006

The aim of this study is to investigate the full annealing parameter for A3003 Al alloy welded tubes. The A3003 Al alloy tubes with 34 mm in external diameter and 1.3 mm in thickness for OPC drum were manufactured by high frequency induction welding with the V shaped convergence angle $6.7^{\circ}$ and power input 50 kW. The tensile and yield strength decreased with increasing the annealing temperature and time remarkably, but elongation increased remarkably. Vickers hardness in welds and base metal decreased with increasing the annealing temperature and time remarkably. In a certain experimental condition, the welds line in A3003 alloys disappeared at $520^{\circ}C$ for 4hr because of the same mechanical properties and structures between welds and base metal.