Patent ID: 8240651

Claim:
A post-processing device comprising: a pair of rollers, each arranged such that an axis direction thereof is perpendicular to a transport direction for transporting recording sheets outputted from an image forming device, operable to form a fold in the axis direction at a predetermined portion of both surfaces of each recording sheet by pinching the predetermined portion with a nip portion defined between the pair of rollers; a first feeding member, extending in the axis direction and arranged opposite the pair of rollers, operable to move between a feeding position and a standby position, the feeding position being at a position in a vicinity of the nip portion and allowing the predetermined portion of each recording sheet to be pinched with the nip portion, the standby position being distant from the feeding position in a direction away from the nip portion; a transport unit operable to cause the recording sheets to be sequentially transported such that the predetermined portion of the both surfaces of each recording sheet is opposite the nip portion; a post-processing unit operable to perform post-processing on a set of the recording sheets on each of which the fold has been formed at the predetermined portion; a second feeding member, arranged downstream from the first feeding member in the transport direction and arranged opposite the first feeding member via the pair of rollers, operable to move between another feeding position and another standby position, the another feeding position being at a position in a vicinity of the nip portion and allowing the predetermined portion of each recording sheet to be pinched with the nip portion, the another standby position being distant from the another feeding position in a direction away from the nip portion, wherein the transport unit further causes the recording sheets on each of which the fold has been formed to be sequentially transported such that the predetermined portion of the both surfaces of each recording sheet intervenes between the pair of rollers and the first feeding member and between the pair of rollers and the second feeding member.