Patent ID: 8544242

Claim:
A method for processing sheets with different sizes to a mail item, comprising: conveying at least one first sheet along a first conveyor track, the at least one first sheet having a first size along a first conveyor track; conveying at least one second sheet along a second conveyor track, the at least one second sheet having a second size along a second conveyor track converging with said first conveyor track; the method subsequently comprising the steps of: comparing at least one predetermined folding length stored in a memory of a control structure with said second size; determining a difference between said at least one folding length and said second size; determining whether said difference between said at least one folding length and said second size is within a predetermined range; subsequently stacking the at least one sheet of the first size and the at least one sheet of the second size to a stacked set in the first conveyor track; and folding the stacked set with the at least one predetermined folding length; wherein said first size differs from said second size; wherein at least said second size is inputted into the control structure; wherein, in response to said difference between said at least one folding length and said second size being within the predetermined range, said conveyor tracks are controlled by the control structure for performing said stacking such that, in the stacked set leading edges of the first and second sheets are mutually staggered over a predetermined distance along the first conveyor track and trailing edges of the first and second sheets are mutually staggered over a predetermined distance along the first conveyor track to form an offset, staggered relationship between the first and second sheets, the trailing edges of the first and second sheet being opposite the leading edges of the first and second sheet, respectively; wherein said stacked sheets are maintained mutually fixed such that the mutual distance between leading edges of the first and second sheets and the mutual distance between the trailing edges of the first and second sheets are maintained until the folding; wherein, during the folding steps, at least one fold is provided in both sheets.