A paper conveying device, used in a paper processing device to perform predetermined processing on paper, includes a conveying portion, a holding portion, a detection portion, and a control portion. The conveying portion conveys, in a conveying direction, the paper to a processing portion of the paper processing device. The holding portion is disposed downstream of the processing portion in the conveying direction and holds the paper processed by the paper processing device. The detection portion detects a change of an orientation of the paper held by the holding portion. The control portion releases the paper held by the holding portion in a case where an amount of the detected orientation change reaches a predetermined amount.

Printing apparatuses include (among other components) a photoreceptor (that is adapted to contact and transfer marking material to a printing side of sheets of media), a transport belt adjacent the photoreceptor, a baffle, and an air outlet. The sheets of media are moved by the photoreceptor across a gap to the transport belt in a “processing direction.” The baffle is adjacent the back side of the sheets of media (the side that is opposite to the printing side of the sheets of media). The air outlet is also positioned adjacent the back side of the sheets of media, and the air outlet is adapted to direct a stream of air along the baffle and between the baffle and the back side of the sheets of media to lift the sheets of media off the photoreceptor without damaging the sheets of media or disturbing the unfused marking material thereon.

In an example, a media catcher may include a first frame member and a second frame member spaced away from the first frame member along a lateral direction, thereby defining a catcher width of the media catcher. Additionally, the media catcher may also include a device interface disposed at a top end of the first frame member or the second frame member. The device interface may attach the media catcher to an imaging device. The media catcher may further include a catch panel extending between the first frame member and the second frame member to catch and support media.

A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.

A transport device includes a transport roller, a nip section, and first and second transport path surfaces. The transport roller transports a transport target material sent from an accommodating unit. The nip section nips the transport target material with the transport roller, and prevents multi-feed of the transport target material. The first transport path surface is disposed upstream of the nip section in a transport direction to face a transport roller side of the nip section. The first transport path surface includes a top portion protruding toward the transport roller side beyond a nip line between the transport roller and the nip section. The second transport path surface is disposed downstream of the nip section in the transport direction to face the transport roller side of the nip section. The second transport path surface includes a top portion protruding toward the transport roller side beyond the nip line.

A sheet guiding device includes a cover unit, a swing guide, a link member, and a contact member. The cover unit is configured to be openably disposed on a housing of an image forming apparatus. The swing guide is configured to move between a guide position at which the swing guide is open to guide a sheet and a retracted position at which the swing guide is closed. The swing guide is configured to move from the retracted position to the guide position along with closing movement of the cover unit. The link member has one end configured to be held by the housing and an opposite end engaged with the swing guide. The contact member is disposed on the cover unit. The contact member is configured to contact the link member to rotate the link member in the closing movement of the cover unit.

An image forming apparatus includes an image forming portion, a sheet reversing roller portion, a first sheet feeding passage, a second sheet feeding passage, a sheet a guiding member forming a retraction feeding passage for guiding upward a leading end of the sheet fed from the reversing roller portion rotating in the first direction and then for guiding the sheet, guided upward, in a direction crossing a vertical direction, the guiding member having an inner surface curved to guide one side of the sheet, and a preventing member for preventing a droop of the leading end of the sheet by contact with the sheet guided in the direction crossing the vertical direction by the sheet guiding member.

A sheet processing apparatus is configured to press a fold line that is formed on a sheet. The sheet processing apparatus includes: a sheet supporting unit configured to support the sheet in a pressing direction for pressing the fold line; a pressing unit configured to press the fold line that is formed on the sheet that is supported by the sheet supporting unit; and a pressing-force generating unit configured to generate a pressing force for pressing the sheet supporting unit against the pressing unit at a central part in a direction along which the fold line is formed.

Systems and methods for folding a stack of substrate sheets are provided. The system may include a roller assembly and a positioning mechanism. The roller assembly is configured for folding the stack of substrate sheets and the positioning mechanism is configured to position the substrate or stack for entry into the roller assembly. The positioning mechanism includes an upper curved for and a lower curved form to guide the stack of substrate sheets into a curved position for folding. The positioning mechanism further includes a folding blade positioned to extend through the gap between the upper and lower curved forms. The roller assembly can move the folded stack of substrate sheets in at least two directions.

A first feeder contacts a first surface of a first sheet held in a first tray and feeds the first sheet toward a recording unit. A second feeder contacts a first surface of a second sheet held in a second tray and feeds the second sheet toward the recording unit. An inner member is disposed above a standing plate. An outer member comprises an upstream portion opposing the standing plate, and a downstream portion opposing the inner member. The inner member guides the first surface of the first sheet and the first surface of the second sheet. The standing plate guides the first surface of the second sheet. The upstream portion of the outer member guides a second surface of the second sheet, and the downstream portion guides a second surface of the first sheet and the second surface of the second sheet. The standing plate moves relative to the outer member.