| 摘要 |
Copying apparatus operable in two-color mode using two developing devices. The copy operation in the two-color mode forms an electrostatic latent image on a photosensitive member by means of exposure to image light, develops said latent image using two developing devices, and after developing performs an inter-image process to remove the different color developing material contaminating the developing devices. Mode changes are prohibited during image exposure, but are permitted during the inter-image process.
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