| 摘要 |
An object of this invention is to continue paper feed operation from another paper feed stage and shorten the operation stop time without stopping paper feed operation even when paper sheets run out during paper feed operation of index sheets, and obtain an output result intended by the user by inhibiting ACC between paper feed stages with different index numbers. For this purpose, this invention provides an image forming apparatus having a plurality of paper feed portions capable of setting index sheets, including a storage section which stores predetermined information on a paper sheet set in each paper feed portion, and a control section which performs processing of automatically changing the paper feed portion between the plurality of paper feed portions on the basis of the predetermined information stored in the storage section, wherein when index sheets are set in the plurality of paper feed portions and pieces of predetermined information on the index sheets set in the paper feed portions coincide with each other, the control section controls the paper feed portions so as to perform change processing between the plurality of paper feed portions in which index sheets are set, and when the pieces of predetermined information do not coincide with each other, controls the paper feed portions so as not to perform change processing.
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