Construction of a Physical Model and a Quantitative Evaluation Method of Density Unevenness on Fusing Process

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  • 定着プロセスにおける濃度ムラの物理モデルと定量評価方法の構築
  • テイチャク プロセス ニ オケル ノウド ムラ ノ ブツリ モデル ト テイリョウ ヒョウカ ホウホウ ノ コウチク

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Abstract

<p>One of the problems about image quality of the image after fusing is “a density unevenness”. The density unevenness is a phenomenon in which dark and light regions are randomly distributed in the solid image. The physical model of the density unevenness was vague, and its quantitative evaluation method have not been established, so that a logical explanation for the quality could not be provided. Therefore, we tried to construct a physical model and a quantitative evaluation method. As a result, correlation with image evaluation was confirmed by setting the physical model to “Ratio of diffused light due to the surface shape of the toner layer in dark and light areas” and the quantitative evaluation value to “Diffusion light ratio”. This paper reports the outline of the evaluation method, the results of correlation verification with image samples and a reason of improvement by applying an elastic layer to the fusing film.</p>

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