Patent ID: 7326167
Filing Date: 2008-02-05
Classification: B65H,G03G

Abstract:
1. A sheet folding device, comprising: a folding plate configured to urge a sheet or a sheet stack in a direction pre-set against a conveying path; two folding rollers configured to receive the sheet and to urge the sheet into a nip therebetween; a guide including at least a first guide member and a second guide member configured to guide the sheet or the sheet stack to prevent the sheet from contacting the two folding rollers along the conveying path where the sheet or the sheet stack is conveyed, the first guide member deforming so that a free end of the first guide member approaches one of the two folding rollers, the first guide member is provided at a upper stream side with respect to the conveying path, the second guide member is provided at a down stream side with respect to the conveying path, and a free end of the first guide member projects into a side of the conveying path more than a free end of the second guide member, wherein the sheet or the sheet stack is folded while being put between and conveyed by the two folding rollers, wherein the free end of the second guide member adapts in share to a contour at a side of the corresponding folding roller, and wherein the second guide member is formed of a harder material than the first guide member.