| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a saddle stitching booklet from being made dirty due to dirt of a binding needle in a paper sheet processing device or an image forming system having a saddle stitching part and a square back shaping part.SOLUTION: A paper sheet processing device 300 includes: cleaning means (cleaning members 322a, 322b, Fig 18) which removes dirt from stitching needles 12a, 12b on a needle driving part 322 of a saddle stitching part 320; cleaning means (a first pressing part 333, a cleaning member 333e2, Fig 17) which removes dirt from the stitching needles driven to a back before a forming member (a forming roller 363a) of a square back is pressed against the back of a saddle stitching booklet; and cleaning means (a forming roller 363a, a cleaning member 363b2, Fig 9) which removes dirt transferred to a pressing surface 363a1 of the forming member 363a from the stitching needle driven to the back by square back forming treatment before a portion on a pressing surface to which the dirt is attached is pressurized against the back again.</p> |
