IMAGE FORMING DEVICE PROVIDED WITH PAPER POST-PROCESSING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an image forming device provided with a paper post- processing device allowing easy and exact execution of an adjustment of a paper stopping position in a middle stitching treatment, a middle folding treatment and a cutting treatment. SOLUTION: This device is the image forming device provided with the paper post-processing device B having a stopping position adjusting means for adjusting a stopping position of a middle folding treated pamphlet SA and a storing means 9P for storing a test chart T for recording a reference folding line m at a center position of a paper carrying direction and adjusting a middle folding position by the adjusting means by discriminating position deviation of the reference folding line m of a test chart image formed on test paper St and a fold part a of the middle folding treated test paper St by printing the test chart T stored in the storing means 9P by an image forming device main body A and performing the middle folding treatment for the test paper St after the printing by the paper post-processing device B.