Patent attributes
A sheet finisher includes: a stacking section having a stacking surface arranged to be tilted, and a stopper located below the stacking surface; a sheet finishing section which post-processes for a sheet bundle that hits the stopper and is stacked on the stacking section; a conveying section which sends two sheets to the stacking section under the condition that the two sheets are shifted each other in a conveyance direction and are superimposed; an input section in which sheet type information is inputted; and a controller which adjusts a shift amount between the two sheets so that the sheet on a lower side precedes toward the stopper by a prescribed amount, when a conveyance condition of the conveyance section is changed based on the inputted sheet type information inputted, and the two sheets are conveyed to the stacking section with the two sheets superimposed.
