B65H29/52

Decurling device and image forming apparatus

A decurling device includes: a first transport unit including a transport roller, the first transport unit that sandwiches a transported sheet and transports the transported sheet further downstream; and a second transport unit including an endless belt that is in contact with the transport roller. The transport roller has an elasticity that, when the belt is pressed against the transport roller, allows the belt to bite into the transport roller by a bite amount corresponding to a pressing force, the second transport unit includes an abutting member disposed inside the belt, the abutting member pressing the belt from an inside of the belt and causing the belt to abut against the transport roller, and a guide member, the abutting member includes an upstream protrusion, an downstream protrusion, the upstream protrusion and the downstream protrusion being provided at positions away from each other at an upstream portion and a downstream portion in a sheet transport direction, each of the upstream protrusion and the downstream protrusion protruding toward an inner surface of the belt, and a recess provided in an intermediate portion between the upstream protrusion and the downstream protrusion in the sheet transport direction, the recess being recessed away from a straight line connecting a top portion of the upstream protrusion and a top portion of the downstream protrusion, the guide member includes a contact surface that is in contact with the inner surface of the belt, the contact surface defining a part of a circulation track of the belt, and the upstream protrusion protrudes beyond a virtual circle that is tangent to the contact surface.

Decurling device and image forming apparatus

A decurling device includes: a first transport unit including a transport roller, the first transport unit that sandwiches a transported sheet and transports the transported sheet further downstream; and a second transport unit including an endless belt that is in contact with the transport roller. The transport roller has an elasticity that, when the belt is pressed against the transport roller, allows the belt to bite into the transport roller by a bite amount corresponding to a pressing force, the second transport unit includes an abutting member disposed inside the belt, the abutting member pressing the belt from an inside of the belt and causing the belt to abut against the transport roller, and a guide member, the abutting member includes an upstream protrusion, an downstream protrusion, the upstream protrusion and the downstream protrusion being provided at positions away from each other at an upstream portion and a downstream portion in a sheet transport direction, each of the upstream protrusion and the downstream protrusion protruding toward an inner surface of the belt, and a recess provided in an intermediate portion between the upstream protrusion and the downstream protrusion in the sheet transport direction, the recess being recessed away from a straight line connecting a top portion of the upstream protrusion and a top portion of the downstream protrusion, the guide member includes a contact surface that is in contact with the inner surface of the belt, the contact surface defining a part of a circulation track of the belt, and the upstream protrusion protrudes beyond a virtual circle that is tangent to the contact surface.

Sheet conveying apparatus

A sheet conveying apparatus includes: a conveyor configured to convey a sheet along a conveyance path; a discharge tray configured to support the sheet discharged from the conveyance path; a sheet presser movable toward and away from a support surface of the discharge tray and configured to press the sheet being discharged, onto the support surface; a first stopper configured to limit a spaced distance between the sheet presser and the support surface to a first distance when the first stopper is located at a first position, and configured to allow the spaced distance to become greater than the first distance when the first stopper is located at a second position; and a position change mechanism configured to change a position of the first stopper between the first position and the second position.

Sheet conveying apparatus

A sheet conveying apparatus includes: a conveyor configured to convey a sheet along a conveyance path; a discharge tray configured to support the sheet discharged from the conveyance path; a sheet presser movable toward and away from a support surface of the discharge tray and configured to press the sheet being discharged, onto the support surface; a first stopper configured to limit a spaced distance between the sheet presser and the support surface to a first distance when the first stopper is located at a first position, and configured to allow the spaced distance to become greater than the first distance when the first stopper is located at a second position; and a position change mechanism configured to change a position of the first stopper between the first position and the second position.

SHEET TRANSFER ASSEMBLY
20170253453 · 2017-09-07 · ·

A sheet transfer assembly is provided for transferring a sheet from a supplying conveyor to a receiving conveyor. The receiving conveyor includes a transport belt having a support surface for supporting the sheet on a contact side of the sheet. The supplying conveyor is arranged for advancing the sheet in a transport direction towards the receiving conveyor. The sheet transfer assembly includes a sheet guidance element arranged downstream of the supplying conveyor in the transport direction for guiding the sheet towards the receiving conveyor, the sheet guidance element includes a guidance surface for supporting the sheet at its contact side; wherein the guidance surface includes two guide faces. Both guide faces extending in the transport direction over the support surface of the transport belt and being cooperatively arranged for supporting both side edge portions at the sides of the sheet in a lateral direction, which is substantially perpendicular to the transport direction, thereby forming a space in between one another allowing a middle portion of the sheet to move towards the support surface of the transport belt.

SHEET STORAGE DEVICE AND PRINTING APPARATUS

A sheet storage apparatus and a printing apparatus include simplified mechanisms for supporting a sheet and for guiding the sheet. A sheet storage device that can store a sheet discharged from a discharge port of a printing apparatus includes multiple flappers provided below the discharge port and arranged in a width direction of the sheet, each flapper being rotatable between a first posture in which the sheet discharged from the discharge port is guided downward in a gravitational direction by using a first surface, and a second posture in which the sheet is supported by using a second surface being different from the first surface; and a connecting unit which connects the plurality of flappers to one another.

SHEET STORAGE DEVICE AND PRINTING APPARATUS

A sheet storage apparatus and a printing apparatus include simplified mechanisms for supporting a sheet and for guiding the sheet. A sheet storage device that can store a sheet discharged from a discharge port of a printing apparatus includes multiple flappers provided below the discharge port and arranged in a width direction of the sheet, each flapper being rotatable between a first posture in which the sheet discharged from the discharge port is guided downward in a gravitational direction by using a first surface, and a second posture in which the sheet is supported by using a second surface being different from the first surface; and a connecting unit which connects the plurality of flappers to one another.

PRINTING APPARATUS, METHOD OF CONTROLLING PRINTING APPARATUS, AND STORAGE MEDIUM
20210402812 · 2021-12-30 ·

A printing apparatus can prevent a print medium from buckling during discharging. In a case in which the print conveyance speed determined by the print mode is higher than or equal to a specified speed, the print medium after printing is conveyed to a discharging tray at the print conveyance speed, and in a case in which the print conveyance speed determined by the print mode is lower than the specified speed, the print medium after printing is conveyed to the discharging tray at the specified speed increased from the print conveyance speed.

Recording apparatus
11203504 · 2021-12-21 · ·

A recording apparatus includes a recording head; an output unit that outputs the recording medium; an output tray that receives the recording medium; a pressing member that is configured to be displaced in an up-down direction and that presses the recording medium toward the output tray by displacement of the pressing member from an upper side to a lower side with respect to the recording medium; and a restricting member configured to contact an upstream end portion in an output direction of the recording medium pressed by the pressing member, the restricting member including a contact position thereof with respect to the upstream end portion being configured to rotate. The restricting member restricts deformation of the upstream end portion pressed by the pressing member at the contact position. The pressing member is displaced upward in a state in which the restricting member restricts the deformation of the upstream end portion.

SHEET POST-PROCESSOR AND IMAGE FORMING SYSTEM
20210387827 · 2021-12-16 · ·

A sheet post-processor includes a processing tray, a sheet discharge port, a discharge roller pair, a pair of cursor members, a pair of support members, and an interlocking mechanism. The interlocking mechanism includes a pair of coupling members arranged in the processing tray so as to be reciprocatable in a sheet width direction. The pair of coupling members are coupled to or decoupled from the pair of cursor members in accordance with movement of the pair of cursor members. While being coupled to the pair of cursor members, the pair of coupling members contact the pair of support members so as to displace the pair of support members to a protruding position, and while being decoupled from the pair of cursor members, the pair of coupling members separate from the pair of support members so as to displace the pair of support members to a retracted position.