| 摘要 |
PURPOSE:To render the tone of a copy controllable as a user requires by incorporating P in Se or an Se alloy in a specified amt. controlled in accordance with required contrast potential. CONSTITUTION:In manufacturing an Se or Se alloy deposited film, P is added to the source Se or Se alloy and this mixture is vapor deposited Se or its alloy and P alone or a P compd. are separately deposited at the same time, and the P content in the deposited film is set to >=0.5ppm. Besides Se, typical Se alloys being generally used are Se-Te, Se-As, Se-Bi, and Se-Sb. As a result, residual potential can be gradually increased in both cases of positive and negative electrostatic charging, and copying tone can be freely selected.
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