| 摘要 |
There is disclosed an apparatus for effectively controlling overlay recording on one side or both sides of a sheet. The apparatus is provided with a data input unit, a first memory for storing format data, an output unit for overlaying the data from the input unit with the format data of the first memory, and a second memory for storing the prior format data in introducing new format data into the first memory, thereby preventing the loss of format data at the shifting of overlay format.
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