S162012 紙内の水分移動解析を用いた電子写真の定着過程におけるカール解析([S16201]柔軟媒体ハンドリングと画像形成システム(1))

概要

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Paper curl is one of the paper handling problems of printers and copiers of the electrophotography. The paper curl becomes the problem such as paper jam and degradation of the print quality. It is known that the shrinkage of the resin toner for images and paper bending in the transportation route cause the paper curl, and these paper curl analyses are investigated. The other reason of the paper curl is paper heating in the fusing process. In the previous study, the curl mechanism by heating was clarified. The difference of heating temperature causes moisture transport from the high-temperature side to the low-temperature side of the paper. The resulting moisture distribution leads to different paper shrinkage rates on either side of the paper. In this study, a moisture transport analysis that considers capillary flow and water evaporation is proposed. The moisture content distribution along the paper thickness is calculated when the two sides are heated at different temperatures. In addition, an experiment is carried out to measure the dependence of paper shrinkage on its moisture content and temperature. The amount of the paper curl is calculated as a function of heating time using a bi-metal model. The theoretical and experimental results are found to be in good agreement.
一般社団法人日本機械学会の論文
2011-09-11