A recording system includes a recording portion that performs recording on a medium, a stacking portion that stacks the medium recorded by the recording portion, and a processing portion that processes a bundle of media stacked on the stacking portion, in which a controller that controls feeding of the medium to the stacking portion determines a maximum number of sheets of media to be stacked on the stacking portion, based on information on swelling of the medium recorded by the recording portion.

A post-processing apparatus includes: a first binding unit that binds sheets and moves while rotating a first gear; a second binding unit that binds sheets and moves while rotating a second gear; a common path that is a path along which the first binding unit and the second binding unit move; a first rack gear that is provided along the common path and meshes with the first gear; and a second rack gear that is provided along the common path at a side opposite to the first rack gear with the common path interposed between the second rack gear and the first rack gear, and meshes with the second gear.

A post-processing apparatus includes: a first binding unit that binds sheets and moves while rotating a first gear; a second binding unit that binds sheets and moves while rotating a second gear; a common path that is a path along which the first binding unit and the second binding unit move; a first rack gear that is provided along the common path and meshes with the first gear; and a second rack gear that is provided along the common path at a side opposite to the first rack gear with the common path interposed between the second rack gear and the first rack gear, and meshes with the second gear.

A paper processing device includes a casing and a paper pressing mechanism. The casing includes a paper placement platform. The paper placement platform is extended externally from the casing so as to support the plural papers. The paper pressing mechanism includes a pressing bar, a driving mechanism and a linking mechanism. The pressing bar includes a pressing structure. The linking mechanism is connected between the driving mechanism and the pressing bar. While the linking mechanism is driven by the driving mechanism, the pressing bar is moved with the linking mechanism and rotated relative to the paper placement platform, so that the pressing structure is moved from an initial position to a target position. When the pressing structure is moved to the target position and contacted with the plural papers, a guiding channel is defined between the pressing structure and the paper placement platform.

A paper processing device includes a casing and a paper pressing mechanism. The casing includes a paper placement platform. The paper placement platform is extended externally from the casing so as to support the plural papers. The paper pressing mechanism includes a pressing bar, a driving mechanism and a linking mechanism. The pressing bar includes a pressing structure. The linking mechanism is connected between the driving mechanism and the pressing bar. While the linking mechanism is driven by the driving mechanism, the pressing bar is moved with the linking mechanism and rotated relative to the paper placement platform, so that the pressing structure is moved from an initial position to a target position. When the pressing structure is moved to the target position and contacted with the plural papers, a guiding channel is defined between the pressing structure and the paper placement platform.

A paper processing device includes a casing, a transfer roller assembly and a paper pressing mechanism. The casing includes a paper placement platform. The plural papers from a printing device are transferred to the paper placement platform by the transfer roller assembly. The paper pressing mechanism is located under the casing. The paper pressing mechanism includes a support frame, a pressing bar, a driving mechanism and a linking mechanism. The pressing bar includes a protrusion block. The protrusion block is penetrated through an opening of the casing. The protrusion block and the paper placement platform face each other. The linking mechanism is connected between the driving mechanism and the pressing bar. While the linking mechanism is driven by the driving mechanism, the pressing bar is moved linearly relative to the support frame, and the protrusion block is moved from an initial position to a target position.

A paper processing device includes a casing, a transfer roller assembly and a paper pressing mechanism. The casing includes a paper placement platform. The plural papers from a printing device are transferred to the paper placement platform by the transfer roller assembly. The paper pressing mechanism is located under the casing. The paper pressing mechanism includes a support frame, a pressing bar, a driving mechanism and a linking mechanism. The pressing bar includes a protrusion block. The protrusion block is penetrated through an opening of the casing. The protrusion block and the paper placement platform face each other. The linking mechanism is connected between the driving mechanism and the pressing bar. While the linking mechanism is driven by the driving mechanism, the pressing bar is moved linearly relative to the support frame, and the protrusion block is moved from an initial position to a target position.

A paper processing device includes a casing, a transfer roller assembly and a paper pressing mechanism. The casing includes a paper placement platform. The plural papers from a printing device are transferred to the paper placement platform by the transfer roller assembly. The paper pressing mechanism is located under the casing. The paper pressing mechanism includes a support frame, a pressing bar, a driving mechanism and a linking mechanism. The pressing bar includes a protrusion block. The protrusion block is penetrated through an opening of the casing. The protrusion block and the paper placement platform face each other. The linking mechanism is connected between the driving mechanism and the pressing bar. While the linking mechanism is driven by the driving mechanism, the pressing bar is moved linearly relative to the support frame, and the protrusion block is moved from an initial position to a target position.

A paper processing device includes a casing, a transfer roller assembly and a paper pressing mechanism. The casing includes a paper placement platform. The plural papers from a printing device are transferred to the paper placement platform by the transfer roller assembly. The paper pressing mechanism is located under the casing. The paper pressing mechanism includes a support frame, a pressing bar, a driving mechanism and a linking mechanism. The pressing bar includes a protrusion block. The protrusion block is penetrated through an opening of the casing. The protrusion block and the paper placement platform face each other. The linking mechanism is connected between the driving mechanism and the pressing bar. While the linking mechanism is driven by the driving mechanism, the pressing bar is moved linearly relative to the support frame, and the protrusion block is moved from an initial position to a target position.

A stapling apparatus includes a stapler, a driver to move the stapler, and a guide part to define a moving path along which the stapler is to move in response to selection of the moving path among a plurality of moving paths along which the stapler is movable.