| 摘要 |
A printing method using an image forming device equipped with a locked stacker is provided to strengthen security of documents output when the classified document is printed and promote user convenience. It is checks whether the document ordered by the user is the security document or not(S20). In case that the document corresponds to the classified document, a stacking space of the locked stacker is checked. In the case that the stacking space is short, shortage of the stacking space is informed to the user(S30). In the case that the user wants to output the document to an opened stacker, the document is output to the opened stacker(S40).
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