| 摘要 |
An electrophotographic duplicator has a duplicating function for a document and an inserting function of any desired character or symbol on a latent image. This consists of the first exposing means for an document, the second exposing means for any desired character or symbol, and a photosensitive layer forming the latent image. the photosensitive layer is divided by 3 sectors; the first one does not expose any image and preserves the first potential of electrification, The second one exposes both positive and negative images. The second and third sectors preserve lower potential than the first one.
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