| 摘要 |
The invention relates to a method for folding a medium (20) in a folder (1), which folder comprises a rotatable folding cylinder (10), a first rotatable press member (11), which first rotatable press member is capable of engaging with said folding cylinder to form a first folding pinch, a second rotatable press member (12), which second rotatable press member is capable of engaging with said folding cylinder to form a second folding pinch, and a medium feed means (13,14), the method comprising the steps of a) feeding the medium with the medium feed means towards the folding cylinder (10) in between the first and second pinch; b) directing the medium into the first folding pinch, formed by engaging said first rotatable press member (11) with said folding cylinder, by rotating the folding cylinder in a first direction; c) forming a blouse in the medium in between said feed means (13,14) and the folding cylinder (10); d) moving said blouse into said second pinch by rotating the folding cylinder in a second direction, opposite to the first direction. The invention also relates to a folding apparatus and a printing system comprising an in-line combination of a printing engine and a folding apparatus according to the invention. |
