Sheet post processing apparatus

摘要

A sheet post processing apparatus includes the following elements: a tray; a stapling unit; a post processing setter; a stapling controller; a punching controller; and a post processing modification controller. The post processing setter sets details relating to the stapling and punching of the sheet on which an image is to be formed. The punching controller determines information on the sheets stored in the tray as a result of the preceding job. The post processing modification controller changes details on the post process of the next job, if necessary, so as to prohibit, at least, a stapling operation. The post processing modification controller can also include a display indicating the status of execution or errors and can be programmed to execute a single batch job.