| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of background information being an obstacle, which cannot be removed by an original frame deleting processing when the original of a different size is read, and to prevent the sight through of an original in a regular size. SOLUTION: A variable color panel 5 such as a liquid crystal display panel is installed in an original cover 4. When the original in the size except for the regular size is read, the color of the variable color panel 5 is controlled to colors (white and yellow) that can be considered to be similar to the base color of the original. For reading the original in the regular size, the color of the variable color panel 5 is controlled to the color (black) effective for preventing sight through.
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