JP2019014600A - Media processing device - Google Patents

Abstract

There is provided a medium processing apparatus capable of reducing disturbance of a stacked state of a medium. A medium processing apparatus includes: a processing unit that processes a sheet-like medium S; an outer wall 23 that opens a discharge port 19 through which a medium processed by the processing unit is opened; and a discharge unit that discharges the medium. A loading unit 22 having a loading surface 21 on which a medium is loaded, a suction unit 61 for sucking gas on the loading surface via a suction port 24 provided below the discharge port, and controlling the work amount of the suction unit And the control unit reduces the work of the suction unit in accordance with the area of the suction port that is blocked and reduced by the medium loaded on the stacking unit. [Selection] Figure 5

Description

  The present invention relates to a medium processing apparatus such as a printer.

  As a type of medium processing apparatus that performs processing on a medium, there is a recording apparatus that records images such as characters and photographs on a sheet-like medium. As an example of a recording apparatus, Patent Document 1 describes an image forming apparatus in which a recorded medium is discharged from a discharge port, and a medium discharged from the discharge port and dropped is loaded on a tray. The image forming apparatus includes a suction unit that sucks air on the tray. In the image forming apparatus, the suction unit sucks the air below the medium discharged from the discharge port, so that the medium is quickly dropped toward the tray, and the disturbance of the loading state of the medium loaded on the tray is reduced. Yes.

JP2015-212194A

In such an image forming apparatus, if the suction of the suction unit is too strong, the stacking state of the media stacked on the tray may be disturbed.
An object of the present invention is to provide a medium processing apparatus capable of reducing disturbance in a medium loading state.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
A medium processing apparatus that solves the above problems includes a processing unit that processes a sheet-shaped medium, an outer wall that opens a discharge port through which the medium processed by the processing unit is discharged, and discharges from the discharge port. A loading unit having a loading surface on which the medium is loaded, a suction unit for sucking gas on the loading surface through a suction port provided below the discharge port, and a work amount of the suction unit A control unit that controls the amount of work of the suction unit according to an opening area of the suction port that is blocked and reduced by the medium loaded on the stacking unit. Make it smaller.

  When the suction part sucks the gas below the medium discharged from the discharge port, the medium is stably dropped toward the stacking part. At this time, as the medium is loaded on the loading section, a part of the suction port is blocked by the medium. When the suction part is driven with a constant work amount, when a part of the suction port is blocked by the medium, the ratio of the suction ports that can suck the gas out of the suction ports decreases, so that the suction port passes. The gas flow rate becomes faster. When the flow velocity of the gas passing through the suction port is increased, the medium discharged from the discharge port is strongly sucked, which may lead to disturbance of the loading state of the medium loaded on the loading unit. In this regard, according to the above configuration, the suction unit passes through the suction port in order to reduce the work amount of the suction unit according to the opening area of the suction port that is blocked and reduced by the medium loaded on the stacking unit. It can suppress that the flow velocity of gas becomes quick. Therefore, it is possible to reduce disturbance in the loading state of the medium.

In the medium processing apparatus, it is preferable that the suction port is open to the loading surface.
According to this configuration, the gas below the medium discharged from the discharge port can be preferably sucked from the side on which the stacking surface is positioned by the suction portion.

In the medium processing apparatus, it is preferable that the control unit increases a work amount of the suction unit based on an increase in a stacking height of the medium loaded on the stacking unit.
Since the suction port is provided in the stacking unit, when the stacking height of the medium loaded on the stacking unit becomes high, the suction unit sucks the gas below the medium discharged from the discharge port by the loaded medium. It becomes difficult to do. In this regard, according to the above-described configuration, in order to increase the work amount of the suction unit based on an increase in the stacking height of the medium loaded on the loading unit, the gas below the medium discharged from the discharge port is sucked. Suction can be suitably performed with a larger work amount in the part.

In the medium processing apparatus, it is preferable that the suction port is opened in the outer wall.
According to this configuration, the gas below the medium discharged from the discharge port can be suitably sucked from the side where the outer wall is located by the suction portion.

In the medium processing apparatus, it is preferable that the medium processing apparatus includes a side wall extending continuously to the outer wall and the stacking unit, and the suction port is open to the side wall.
According to this configuration, the gas below the medium discharged from the discharge port can be suitably sucked from the side where the side wall is located by the suction portion.

  In the medium processing apparatus, a plurality of the suction ports are provided as slit-like openings extending in the vertical direction, and the control unit is configured such that each of the plurality of the suction ports is formed by the medium loaded on the stacking unit. It is preferable to reduce the amount of work of the suction portion according to the area of the suction port that is reduced by being blocked.

According to this configuration, since a plurality of suction ports are provided as slit-like openings extending in the vertical direction, it is possible to reduce the possibility that the medium loaded on the stacking unit is sucked into the suction port.
In the medium processing apparatus, a plurality of the suction ports are provided as openings arranged in the vertical direction, and the control unit is configured to block a part of the plurality of suction ports by the medium loaded on the stacking unit. It is preferable to reduce the work of the suction portion according to the opening area of the suction port that is reduced by this.

According to this configuration, since a plurality of suction ports are provided as openings arranged in the vertical direction, it is possible to reduce the possibility that the medium loaded on the stacking unit is sucked into the suction ports.
The medium processing apparatus includes a detection unit capable of detecting a loading amount of the medium loaded on the loading unit, and the control unit determines a work amount of the suction unit based on detection of the detection unit. It is preferable to change.

  As the loading amount of the medium loaded on the loading unit increases, the ratio of blocking by the medium at the suction port increases. Therefore, according to this configuration, the ratio of the suction ports blocked by the medium can be grasped based on the amount of the medium loaded on the loading unit. That is, the work amount of the suction unit can be changed according to the area of the suction port that is reduced by being blocked by the medium loaded on the loading unit.

  In the medium processing apparatus, the control unit can count the number of discharges of the medium discharged from the discharge port, and can change the work amount of the suction unit based on the number of discharges of the medium. preferable.

  Since the medium discharged from the discharge port is loaded on the stacking unit, when the number of discharged mediums discharged from the discharge port increases, the ratio of being blocked by the medium at the suction port increases. Therefore, according to this configuration, the ratio of the suction ports that are blocked by the medium can be grasped based on the number of discharged media that are discharged from the discharge ports. That is, the work amount of the suction unit can be changed according to the area of the suction port that is reduced by being blocked by the medium loaded on the loading unit.

  The medium processing apparatus preferably includes a blower that blows the gas sucked by the suction unit, and the blower blows the gas toward the stacking surface from above the discharge port.

  According to this structure, a ventilation part blows gas toward the downward direction from the upper direction with respect to the medium discharged | emitted from a discharge port. Therefore, the medium discharged from the discharge port can be quickly dropped toward the stacking unit.

In the medium processing apparatus, it is preferable that the control unit changes a work amount of the suction unit based on a size of the medium discharged from the discharge port.
Depending on the size of the medium, the suction of the suction part may be too strong. Therefore, for example, when the size of the medium discharged from the discharge port is smaller than the size of the medium that is normally used, the work amount of the suction unit is reduced. That is, according to the above configuration, the work amount of the suction unit can be appropriately controlled based on the size of the medium.

In the medium processing apparatus, the processing unit is preferably a recording unit that records on the medium.
According to this configuration, it is possible to reduce disturbance in the stacked state of the medium recorded by the recording unit.

1 is a perspective view illustrating a first embodiment of a recording apparatus that is an example of a medium processing apparatus. FIG. FIG. 3 is a side view showing the internal structure of the recording apparatus. The graph which shows the alignment of the medium in the depth direction of a recording device. 6 is a graph showing the alignment of media in the width direction of the recording apparatus. The side view which shows a loading part typically. The perspective view which shows 2nd Embodiment of a recording device. Sectional drawing of a loading part. Sectional drawing of a loading part. The perspective view which shows the example of a change of a recording device. The perspective view which shows the other example of a change of a recording device. FIG. 11 is a cross-sectional view of a part of the loading unit in FIG. 10. The perspective view which shows the example of a change of a suction port. The perspective view which shows the other example of a change of a suction opening. FIG. 11 is a perspective view illustrating a modified example of a recording apparatus different from those in FIGS.

(First embodiment)
Hereinafter, a first embodiment of a recording apparatus which is an example of a medium processing apparatus will be described with reference to the drawings.

  As shown in FIG. 1, the recording apparatus 11 includes a housing 12. The recording device 11 is configured to be able to record images such as characters and photographs on a sheet-like medium (see FIG. 2) S such as paper. That is, the recording device 11 is a printer, for example. The recording apparatus 11 includes a reading mechanism 13 that can read a document and an operation unit 14 for operating the recording apparatus 11 above the housing 12.

  The reading mechanism 13 is configured as a scanner, for example. The operation unit 14 includes, for example, a touch panel for operating the recording device 11. The operation unit 14 may have an operation button for operating the recording device 11. The reading mechanism 13 and the operation unit 14 are arranged side by side so as to be adjacent to each other above the housing 12.

  The direction in which the reading mechanism 13 and the operation unit 14 are arranged is the depth direction of the recording apparatus 11. In the depth direction of the recording apparatus 11, the side of the reading mechanism 13 and the operation unit 14 where the operation unit 14 is located is the front side of the recording apparatus 11. A front surface 15, which is a front surface of the housing 12, extends in the vertical direction and the width direction of the recording device 11. The depth direction, the vertical direction, and the width direction of the recording apparatus 11 indicate different directions.

  The recording apparatus 11 includes a cover 16 and a medium cassette 17. The cover 16 is attached to the side of the housing 12. That is, the cover 16 is provided on one side in the width direction of the recording apparatus 11. In the present embodiment, in the width direction of the recording apparatus 11, the side on which the cover 16 is provided is the first end side, and the opposite side is the second end side.

  The cover 16 can be opened and closed with respect to the housing 12. The cover 16 in FIG. 1 is closed with respect to the housing 12. When the cover 16 is opened with respect to the housing 12, a supply port (see FIG. 2) 18 for manually feeding the medium S into the housing 12 is exposed.

  The medium cassette 17 is disposed at the lower part of the housing 12. The medium cassette 17 can be attached to and detached from the front side with respect to the housing 12, and the medium S can be accommodated in a stacked state. The medium cassette 17 is set in the housing 12 by being mounted on the housing 12 in a state where the medium S is accommodated. The recording device 11 records an image on the medium S supplied from the supply port 18 and the medium cassette 17.

  The recording apparatus 11 includes a discharge port 19 through which the recorded medium S is discharged and a stacking unit 22 having a stacking surface 21 on which the medium S discharged from the discharge port 19 is stacked. ing. The discharge port 19 opens in the outer wall 23 that constitutes a part of the housing 12. Therefore, it can be said that the recording apparatus 11 includes the outer wall 23 in which the discharge port 19 is opened. The outer wall 23 is a wall having a spread in the vertical direction and the depth direction of the recording apparatus 11. The discharge port 19 opens at a position closer to the upper side of the outer wall 23.

  In the outer wall 23, a suction port 24 is provided below the discharge port 19. That is, the suction port 24 is located below the discharge port 19. The suction port 24 is a slit-like opening extending in the vertical direction of the recording apparatus 11. A plurality of suction ports 24 are provided on the outer wall 23 so as to be arranged at equal intervals in the depth direction of the recording apparatus 11.

  The stacking unit 22 is provided so as to constitute a part of the housing 12. The stacking unit 22 is located below the discharge port 19. The stacking portion 22 is provided so as to extend from the lower end of the outer wall 23 toward the side (first end side) where the cover 16 is located. That is, it can be said that the stacking portion 22 extends in the width direction of the recording apparatus 11 with the width of the outer wall 23 in the depth direction of the recording apparatus 11.

  The stacking unit 22 has a stacking surface 21 on which the medium S discharged from the discharge port 19 is stacked. Therefore, it can be said that the stacking surface 21 is widened in the depth direction and the width direction of the recording apparatus 11. The medium S discharged from the discharge port 19 falls on the stacking unit 22 and is stacked on the stacking surface 21.

  The stacking unit 22 is configured to be inclined upward from the outer wall 23 toward the cover 16 in the width direction of the recording apparatus 11. In other words, the stacking unit 22 is configured to be inclined upward from the second end side toward the first end side in the width direction of the recording apparatus 11. Therefore, the medium S discharged from the discharge port 19 moves to the outer wall 23 side so as to slide down along the inclination of the stacking surface 21 when being stacked on the stacking unit 22. Specifically, the medium S moves on the stacking surface 21 so as to slide down from the first end side to the second end side in the width direction of the recording apparatus 11. Thus, when the medium S is stacked on the stacking unit 22, the rear end of the medium S comes into contact with the outer wall 23. That is, the rear end of the medium S to be discharged contacts the outer wall 23. Therefore, it can be said that the outer wall 23 has a function of reducing disturbance in the stacking state of the medium S by aligning the rear ends of the plurality of media S stacked on the stacking unit 22.

  The recording apparatus 11 has a side wall 25 that extends from the outer wall 23 and the stacking unit 22. The side wall 25 extends in the vertical direction and the width direction of the recording apparatus 11. The side wall 25 is provided on the rear side of the recording apparatus 11, that is, on the back side in the depth direction of the recording apparatus 11.

  The reading mechanism 13 is located above the stacking unit 22. The stacking unit 22 overlaps a part of the reading mechanism 13 in the vertical direction of the recording apparatus 11. Therefore, the stacking unit 22 is disposed in the recording apparatus 11 so as to be surrounded by the stacking surface 21 of the stacking unit 22, the outer wall 23, the side wall 25, and the reading mechanism 13. On the other hand, in the recording apparatus 11, the stacking unit 22 is opened on the front side of the recording apparatus 11 and on the side side (first end side) of the recording apparatus 11 on which the cover 16 is provided. The recording apparatus 11 is configured to be able to access the medium S loaded on the stacking unit 22 from the front side and the side side (first end side).

  As shown in FIG. 2, the recording apparatus 11 includes a control unit 30 that controls the operation of the recording apparatus 11 in an integrated manner inside the housing 12. The recording apparatus 11 includes a recording unit 32 for recording an image on the medium S and a support base 31 for supporting the medium S being recorded by the recording unit 32 inside the housing 12. The recording apparatus 11 includes a transport path 40 for transporting the medium S and a transport unit 33 for transporting the medium S along the transport path 40 inside the housing 12.

  The support base 31 is disposed at a position between the medium cassette 17 and the stacking unit 22 in the vertical direction of the recording apparatus 11. The recording unit 32 is provided above the support base 31 and is disposed so as to face the support base 31. The recording unit 32 records an image on the medium S by discharging a liquid such as ink toward the medium S supported by the support base 31. That is, the recording unit 32 is an example of a processing unit that performs processing on the medium S. The transport unit 33 includes a plurality of rollers 34 that are disposed along the transport path 40 and transport the medium S.

  The transport path 40 includes a first supply path 41, a second supply path 42, and a third supply path 43 for supplying the medium S to the recording unit 32. The transport path 40 includes a discharge path 44 for discharging the medium S recorded by the recording unit 32 from the discharge port 19 and a branch path 45 branched from the discharge path 44.

  The first supply path 41 is a path through which the medium S accommodated in the medium cassette 17 is conveyed toward the recording unit 32. The second supply path 42 conveys the medium S supplied from the supply port 18 exposed by opening the cover 16 attached to the side of the housing 12 (right side in FIG. 2) toward the recording unit 32. Is a route to be done. The third supply path 43 is a path through which the medium S having an image recorded on one side thereof is conveyed toward the recording unit 32 again in order to execute so-called double-sided printing in which images are recorded on both sides of the medium S. The third supply path 43 extends between the stacking unit 22 and the recording unit 32 so as to bypass the recording unit 32.

  The discharge path 44 is a path extending from the recording unit 32 toward the discharge port 19 opening at the top of the housing 12. The discharge path 44 is curved so that the posture of the medium S being conveyed is reversed. Therefore, the medium S transported through the discharge path 44 is reversed so that one surface recorded by the recording unit 32 changes from a posture facing upward to a posture facing downward. The medium S discharged from the discharge port 19 falls toward the stacking unit 22 and is stacked such that one recorded surface faces the stacking surface 21.

  The branch path 45 extends so as to branch from an intermediate position of the discharge path 44. The branch path 45 extends curvedly along the discharge path 44. The branch path 45 is connected to the third supply path 43 in the middle position. In the branch path 45, a switchback roller 35 that is a kind of the roller 34 constituting the transport unit 33 and is rotatable in both the forward direction and the reverse direction is disposed.

  As the switchback roller 35 rotates forward, the medium S is conveyed from the discharge path 44 along the branch path 45. As the switchback roller 35 rotates in the reverse direction, the medium S is reversely conveyed from the branch path 45 toward the third supply path 43, that is, switched back. The medium S conveyed through the third supply path 43 extending above the recording unit 32 is conveyed while its posture is reversed so that the other side opposite to the already recorded one side faces the recording unit 32, Double-sided printing is performed by the recording unit 32.

  The recording apparatus 11 includes a detection unit 36 that can detect the stacking height of the medium S stacked on the stacking unit 22. The stacking height of the medium S stacked on the stacking unit 22 is the distance between the uppermost medium S and the stacking surface 21 in the plurality of media S stacked on the stacking unit 22 in the vertical direction of the recording apparatus 11. is there. The detection unit 36 is attached to the side wall 25. The detection unit 36 is configured as an optical sensor, for example. The detection unit 36 detects the stacking height by irradiating infrared rays toward the medium S stacked on the stacking unit 22. The control unit 30 acquires the stacking height of the medium S detected by the detection unit 36 as the stacking amount of the medium S stacked on the stacking unit 22. That is, it can be said that the detection unit 36 can detect the loading amount of the medium S loaded on the loading unit 22.

  The detection part 36 is not restricted to the aspect mentioned above. For example, the detection unit 36 may be configured to sense the top of the stacking surface 21 in the depth direction of the recording apparatus 11 with a plurality of sensors provided on the side wall 25. In this case, the detection unit 36 detects the loading height of the medium S, that is, the loading amount, based on the number of sensors blocked by the medium S loaded on the loading unit 22 among the plurality of sensors. The detection unit 36 is not limited to an optical sensor, and may be configured to detect the weight of the medium S stacked on the stacking unit 22. In this case, the control unit 30 acquires the loading amount of the medium S based on the weight of the medium S detected by the detection unit 36.

  The recording device 11 includes a blower 51 at the top of the housing 12. The blower 51 can blow gas through a blower opening 52 that opens upward from the discharge port 19. The blower 51 blows the gas taken in from the outside of the recording device 11. Therefore, the gas blown by the blower 51 is a gas in the atmosphere in which the recording apparatus 11 is installed, that is, air.

  The blower 51 includes a blower fan 53 for blowing gas, and a blower passage 54 through which the gas blown by the blower fan 53 flows. The blower fan 53 is disposed in the blower flow path 54. The air flow path 54 extends from the air blowing port 52 toward the air blowing fan 53. When the blower fan 53 is driven, gas is blown from the blower opening 52.

  The blower 51 blows gas from above toward the medium S discharged from the discharge port 19 via the blower port 52. The blower 51 blows gas toward the stacking surface 21 from above the discharge port 19. The medium S discharged from the discharge port 19 is quickly dropped onto the stacking unit 22 by being pressed toward the stacking unit 22 by the air blown from the blowing unit 51.

  The recording apparatus 11 includes a suction unit 61 that can suck gas through the suction port 24. The gas sucked by the suction unit 61 is a gas in the atmosphere in which the recording apparatus 11 is installed, that is, air. The suction unit 61 includes a suction fan 62 for sucking gas and a suction flow path 63 through which the gas sucked by the suction fan 62 flows.

  The suction channel 63 extends from the suction port 24 toward the suction fan 62. When the suction fan 62 is driven, gas is sucked through the suction port 24. The suction channel 63 and the air flow channel 54 are connected to each other inside the housing 12. Therefore, the gas outside the housing 12 sucked by the suction unit 61 is discharged to the outside of the housing 12 by the blower unit 51. Further, the suction strength of the suction portion 61 and the strength of the air blowing of the blower portion 51 are linked to each other. That is, when the suction of the suction part 61 is strong, the air blowing of the air blowing part 51 is also strong. When the suction of the suction part 61 is weak, the air blowing of the blower part 51 is also weakened. When the suction flow path 63 and the blower flow path 54 are connected to each other, the suction fan 62 may also serve as the blower fan 53. The blower fan 53 may also serve as the suction fan 62.

  The suction unit 61 sucks the gas on the loading surface 21 through the suction port 24. Specifically, the suction unit 61 sucks the gas between the discharge port 19 and the loading surface 21. That is, when the medium S is discharged from the discharge port 19, the suction unit 61 sucks the gas between the medium S discharged from the discharge port 19 and the stacking surface 21. More specifically, the gas between the medium S discharged from the discharge port 19 and the stacking surface 21 is sucked from the side where the outer wall 23 where the suction port 24 is opened is located.

  In the recording apparatus 11 that discharges the medium S from the discharge port 19 and loads the medium S on the stacking unit 22, the stacking state of the medium S on the stacking surface 21 may be disturbed. The main factors that disturb the loading state of the medium S loaded on the loading unit 22 are considered to be air resistance generated when the medium S falls from the discharge port 19 to the loading surface 21 and Karman vortex generated in the medium S. The dropping speed of the medium S falling from the discharge port 19 toward the stacking unit 22 may decrease due to air resistance. At this time, the medium S discharged from the discharge port 19 may come into contact with the next medium S discharged from the discharge port 19 due to a decrease in the falling speed thereof. As a result, the drop position of the medium S may be displaced, and the stacked state of the medium S may be disturbed.

  In the medium S falling from the discharge port 19 toward the stacking unit 22, Karman vortices may be generated around the end. When the medium S is a rectangular sheet, Karman vortices may be generated around the edges of the paper on the four sides. At this time, the posture of the medium S discharged from the discharge port 19 may fluctuate during the fall due to Karman vortex. As a result, the fall position of the medium S may be shifted, and the stacked state of the medium S may be disturbed. Therefore, the recording apparatus 11 in the present embodiment reduces the air resistance and the generation of Karman vortex by the suction unit 61 sucking the gas through the suction port 24. As a result, the medium S is quickly dropped onto the stacking unit 22 and the disturbance of the stacking state of the medium S is reduced.

  The graphs shown in FIGS. 3 and 4 are graphs obtained by experiments. This graph shows the relationship between the voltage applied to the suction fan 62 and the loading state of the medium S loaded on the loading unit 22, that is, the alignment of the medium S. In the graph, the vertical axis indicates the alignment of the medium S, and the horizontal axis indicates the voltage applied to the suction fan 62. The alignment of the medium S is relatively shown by assuming that the alignment of the medium S is 100% when there is no suction by the suction fan 62, that is, when the voltage applied to the suction fan 62 is 0V. In the graph, the alignment of the medium S indicates that the smaller the value is, the smaller the disturbance of the loaded state, that is, the higher the alignment of the medium S is.

  The suction unit 61 is configured such that the larger the voltage applied to the suction fan 62, the greater the flow rate of the gas sucked per unit time. In the present embodiment, the flow rate of the gas sucked by the suction unit 61 per unit time is referred to as a suction amount. The suction amount is determined by the area through which the gas can pass in the suction fan 62 and the flow velocity of the gas passing through the suction fan 62. In the suction part 61, the area of the suction fan 62 through which the gas can pass does not change, so that the suction amount of the suction part 61 increases that the flow velocity of the gas passing through the suction fan 62 increases. As the flow rate of the gas passing through the suction fan 62 increases, the flow rate of the gas passing through the suction port 24 also increases. That is, it can be said that the graphs shown in FIGS. 3 and 4 show the relationship between the flow rate of the gas passing through the suction port 24 and the alignment of the medium S.

  The suction amount of the suction part 61 changes as the work amount of the suction part 61 changes. As the work amount of the suction part 61 increases, the suction amount of the suction part 61 increases. When the work amount of the suction part 61 becomes small, the suction amount of the suction part 61 becomes small. The work amount of the suction unit 61 is the amount of energy consumed by the suction unit 61 per unit time. Therefore, the work amount of the suction unit 61 is determined by the performance of the suction fan 62 included in the suction unit 61 and the current flowing through the suction fan 62. It can be said that the work amount of the suction unit 61 is determined by the performance of the suction fan 62 and the voltage applied to the suction fan 62.

  The graph shown in FIG. 3 shows the relationship between the voltage applied to the suction fan 62 and the alignment of the medium S in the depth direction of the recording apparatus 11 (the direction intersecting the discharge direction of the discharged medium S). . When the voltage applied to the suction fan 62 is 8V, the alignment of the medium S in the depth direction of the recording apparatus 11 is 57%. When the voltage applied to the suction fan 62 is 12V, the alignment of the medium S in the depth direction of the recording apparatus 11 is 34%. When the voltage applied to the suction fan 62 is 16V, the alignment of the medium S in the depth direction of the recording apparatus 11 is 24%. That is, this graph shows that the alignment of the medium S in the depth direction of the recording apparatus 11 improves as the flow velocity of the gas passing through the suction port 24 increases.

  The graph shown in FIG. 4 shows the relationship between the voltage applied to the suction fan 62 and the alignment of the medium S in the width direction of the recording apparatus 11 (the discharge direction of the discharged medium S). When the voltage applied to the suction fan 62 is 8V, the alignment of the medium S in the width direction of the recording apparatus 11 is 120%. When the voltage applied to the suction fan 62 is 12V, the alignment of the medium S in the width direction of the recording apparatus 11 is 140%. When the voltage applied to the suction fan 62 is 16V, the alignment of the medium S in the width direction of the recording apparatus 11 is 290%. That is, this graph shows that the alignment of the medium S in the width direction of the recording apparatus 11 decreases as the flow velocity of the gas passing through the suction port 24 increases.

  In the first embodiment, the suction unit 61 performs suction from the outer wall 23 side, that is, sucks gas from the rear end side of the medium S. Accordingly, the medium S is sucked into the suction port 24 in the width direction of the recording apparatus 11 along with the suction. May move to the side. Therefore, it is considered that the alignment of the medium S in the width direction of the recording apparatus 11 is slightly deteriorated. If the voltage applied to the suction fan 62 is higher than 12V, the suction of the suction part 61 is too strong, so that the medium S sticks to the suction port 24 and the alignment of the medium S is extremely deteriorated.

  Here, the alignment of the medium S is comprehensively evaluated by superimposing the graph shown in FIG. 3 and the graph shown in FIG. For example, when the voltage applied to the suction fan 62 is 0 V, the alignment of the medium S in the depth direction of the recording apparatus 11 is 100%, and the alignment of the medium S in the width direction of the recording apparatus 11 is 100%. Therefore, by adding the two together, the alignment of the medium S when the voltage applied to the suction fan 62 is 0 V is evaluated as 100% + 100% = 200%.

  In this case, the alignment of the medium S when the voltage applied to the suction fan 62 is 8V is 57% + 120% = 177%. The alignment of the medium S when the voltage applied to the suction fan 62 is 12V is 34% + 140% = 174%. That is, it can be said that the alignment of the medium S is improved by the suction unit 61 sucking gas through the suction port 24. The alignment when the voltage applied to the suction fan 62 is 16V is 24% + 290% = 314%. For this reason, if the flow rate of the gas passing through the suction port 24 is too high, the alignment of the medium S is deteriorated.

  As shown in FIG. 5, the suction port 24 in the present embodiment opens in the outer wall 23 with which the rear end of the medium S stacked on the stacking unit 22 contacts. Therefore, as the medium S is loaded on the loading unit 22, a part of the suction port 24 is blocked by the medium S loaded on the loading unit 22. In the present embodiment, the slit-like suction port 24 extending in the vertical direction of the recording apparatus 11 is gradually closed from the lower side by the medium S stacked on the stacking unit 22.

  When a part of the suction port 24 is blocked, the ratio of the suction ports 24 that can suck gas out of the suction ports 24 that open to the outer wall 23 decreases. When the ratio of the suction ports 24 capable of sucking the gas decreases, the suction amount of the suction unit 61 does not change, so that the flow rate of the gas passing through the suction ports 24 increases. When the flow velocity of the gas passing through the suction port 24 is increased, the alignment of the medium S may be deteriorated as described above. Therefore, the recording apparatus 11 of the present embodiment is configured such that the control unit 30 controls the suction unit 61 based on the fact that a part of the suction port 24 is blocked by the medium S. That is, the control unit 30 controls the work amount of the suction unit 61 according to the area of the suction port 24 that is blocked and reduced by the medium S loaded on the stacking unit 22. The amount of work of the suction unit 61 is controlled by changing the voltage applied to the suction fan 62, for example.

The operation of the recording apparatus 11 in the first embodiment configured as described above will be described.
When the medium S is discharged from the discharge port 19, the control unit 30 grasps the loading amount of the medium S loaded on the loading unit 22 by the detection unit 36. The control unit 30 controls the suction unit 61 based on the loading amount of the medium S detected by the detection unit 36. As described above, in the recording apparatus 11 of the first embodiment, as the loading amount of the medium S increases, the ratio of the suction ports 24 that are blocked by the medium S increases. That is, as the loading amount of the medium S increases, the area of the outer wall 23 where the suction port 24 is open decreases. Therefore, the ratio of the suction ports 24 that are blocked by the medium S in the suction ports 24 can be replaced with the loading amount of the medium S loaded on the stacking unit 22. That is, in the first embodiment, the control unit 30 grasps the ratio of the suction ports 24 that are blocked by the medium S among the suction ports 24 based on the loading amount of the medium S detected by the detection unit 36.

  The flow rate of the gas passing through the suction port 24 is determined by the suction amount of the suction unit 61 and the ratio of the suction ports 24 that are blocked by the medium S. Therefore, the control unit 30 controls the suction unit 61 so that the flow velocity of the gas passing through the suction port 24 does not become too fast based on the loading amount of the medium S detected by the detection unit 36.

  Based on the detection unit 36 detecting the medium S, the control unit 30 grasps that a part of the suction port 24 is blocked. In the present embodiment, as part of the suction port 24 is blocked by the medium S, the flow rate of the gas sucked from the suction port 24 increases. Therefore, the control unit 30 reduces the suction amount of the suction unit 61 based on a part of the suction port 24 being blocked by the medium S. In other words, the control unit 30 determines the suction unit according to the opening area of the suction port 24 that is reduced when each of the plurality of suction ports 24 is blocked by the medium S loaded on the stacking unit 22. Reduce the work of 61. For example, by reducing the voltage applied to the suction fan 62, the work of the suction unit 61 is reduced.

  In the first embodiment, the control unit 30 includes, for example, a first setting value and a second setting value for determining the loading amount of the medium S in three patterns of “small”, “medium”, and “large”. It is set in advance. The control unit 30 compares the loading amount detected by the detection unit 36 with the first set value and the second set value.

  The control unit 30 determines that the loading amount of the medium S is “small” when the loading amount of the medium S is smaller than the first set value. In this case, the control unit 30 does not change the suction amount of the suction unit 61. That is, the suction unit 61 sucks the gas with the first suction amount set as the initial value. That is, the suction unit 61 is driven with the first work amount set as the initial value.

  The control unit 30 determines that the loading amount of the medium S is “medium” when the loading amount of the medium S is equal to or larger than the first setting value and smaller than the second setting value. In this case, the control unit 30 makes the suction amount of the suction unit 61 smaller than when the loading amount of the medium S is “small”. That is, the suction unit 61 sucks gas with a second suction amount that is smaller than the first suction amount. That is, the suction unit 61 is driven with a second work amount smaller than the first work amount.

  The control unit 30 determines that the loading amount of the medium S is “large” when the loading amount of the medium S is equal to or larger than the second set value. In this case, the control unit 30 makes the suction amount of the suction unit 61 smaller than when the loading amount of the medium S is “medium”. That is, the suction unit 61 sucks the gas with the third suction amount that is smaller than the second suction amount. That is, the suction unit 61 is driven with a third work amount smaller than the second work amount.

According to the first embodiment described above, the following effects can be obtained.
(1) The suction unit 61 sucks the gas below the medium S discharged from the discharge port 19, so that the medium S is stably dropped toward the stacking unit 22. At this time, as the medium S is stacked on the stacking unit 22, a part of the suction port 24 is blocked by the medium S. When the suction unit 61 is driven with a constant work amount, when a part of the suction port 24 is blocked by the medium S, the proportion of the suction ports 24 that can suck gas out of the suction ports 24 decreases. The flow rate of the gas passing through the suction port 24 is increased. If the flow velocity of the gas passing through the suction port 24 is increased, the medium S discharged from the discharge port 19 is strongly sucked, which may lead to disturbance of the loading state of the medium S loaded on the loading unit 22. . In this regard, according to the above configuration, the suction port 61 reduces the work amount of the suction unit 61 in accordance with the open area of the suction port 24 that is blocked and reduced by the medium S loaded on the stacking unit 22. It can suppress that the flow velocity of the gas which passes 24 becomes quick. Therefore, disturbance of the loading state of the medium S can be reduced.

(2) The suction port 24 opens in the outer wall 23. Therefore, the gas below the medium S discharged from the discharge port 19 can be preferably sucked by the suction portion 61 from the side where the outer wall 23 is located.
(3) Since a plurality of the suction ports 24 are provided as slit-like openings extending in the vertical direction, it is possible to reduce a possibility that the medium S loaded on the stacking unit 22 is sucked into the suction port 24.

  (4) The recording apparatus 11 includes a detection unit 36 that can detect the loading amount of the medium S loaded on the loading unit 22. The control unit 30 changes the work amount of the suction unit 61 based on the detection of the detection unit 36. When the loading amount of the medium S loaded on the loading unit 22 increases, the ratio of the medium S blocked by the suction port 24 increases. Therefore, the ratio of the suction ports 24 that are blocked by the medium S can be grasped based on the loading amount of the medium S loaded on the loading unit 22. That is, the work amount of the suction unit 61 can be changed according to the area of the suction port 24 that is reduced by being blocked by the medium S loaded on the stacking unit 22.

(5) The processing unit is the recording unit 32 that records on the medium S. For this reason, it is possible to reduce the disturbance in the stacking state of the medium S recorded by the recording unit 32.
(6) The air blowing unit 51 blows the gas that blows the gas sucked by the suction unit 61 toward the stacking surface 21 from above the discharge port 19. That is, the air blowing unit 51 blows gas from above to below the medium S discharged from the discharge port 19. Thereby, the medium S discharged from the discharge port 19 can be quickly dropped toward the stacking unit 22. Further, the air blowing unit 51 blows the gas sucked by the suction unit 61. Therefore, the recording apparatus 11 does not require a mechanism for taking in the gas blown by the blower 51 from outside. That is, the blower 51 can be realized with a simple configuration.

(Second Embodiment)
Next, a second embodiment of the recording apparatus 11 will be described with reference to the drawings. In the second embodiment, differences from the first embodiment will be mainly described.

  As shown in FIG. 6, the recording apparatus 11 in the second embodiment differs from the recording apparatus 11 in the first embodiment in the position where the suction port 24 is provided. That is, in the recording apparatus 11 of the second embodiment, the suction port 24 is provided on the stacking surface 21 of the stacking unit 22. That is, the suction port 24 is located below the discharge port 19.

  The suction port 24 is a slit-like opening extending in the depth direction of the recording apparatus 11. A plurality of suction ports 24 are provided on the stacking surface 21 so as to be aligned in the width direction of the recording apparatus 11. The suction port 24 extends on the stacking surface 21 so as to be longer in the depth direction of the recording device 11 than the maximum size medium S that can be recorded by the recording device 11.

  The stacking unit 22 has ribs 71 that extend in the width direction of the recording apparatus 11 on the stacking surface 21. A plurality of ribs 71 are provided on the stacking surface 21 so as to be aligned in the depth direction of the recording apparatus 11. The rib 71 extends so as to pass above the suction port 24 that opens in the stacking surface 21. That is, the rib 71 extends so as to cover a part of the suction port 24. Therefore, the suction port 24 and the rib 71 are provided on the stacking surface 21 so as to form a lattice shape. The rib 71 is a member for preventing the medium S discharged from the discharge port 19 from falling into the suction port 24 opened on the stacking surface 21. That is, in the second embodiment, the medium S discharged from the discharge port 19 is stacked on the rib 71.

The operation of the recording apparatus 11 in the second embodiment configured as described above will be described.
The suction part 61 in the recording apparatus 11 of the second embodiment sucks the gas on the stacking surface 21 through the suction port 24. That is, the suction unit 61 sucks the gas between the medium S discharged from the discharge port 19 and the stacking surface 21 downward from the side where the stacking surface 21 is located. In the second embodiment, the direction of the medium S that falls and the direction in which the gas sucked by the suction of the suction unit 61 flows match, so that the medium S is dropped more quickly.

  As shown in FIG. 7, when the medium S discharged from the discharge port 19 is stacked on the stacking unit 22, a part of the suction port 24 is blocked by the medium S. In the second embodiment, the suction port 24 opens in the stacking surface 21. Therefore, when the medium S is loaded from the state in which the medium S is not stacked on the stacking unit 22, that is, after the first medium S is discharged from the discharge port 19, Most of the area is blocked by the first medium S. That is, when the medium S is stacked on the stacking unit 22, the area where the suction port 24 is open on the stacking surface 21 is reduced.

  When a part of the suction port 24 is blocked, the proportion of the suction ports 24 that can suck gas out of the suction ports 24 that open on the stacking surface 21 decreases. When the ratio of the suction ports 24 that can suck the gas decreases, the suction amount of the suction fan 62 does not change, so that the flow rate of the gas passing through the suction ports 24 increases. When the flow velocity of the gas passing through the suction port 24 is increased, the alignment of the medium S may be deteriorated as described above. Therefore, the recording apparatus 11 of the present embodiment is configured such that the control unit 30 controls the suction unit 61 based on the fact that a part of the suction port 24 is blocked by the medium S.

  In the second embodiment, unlike the first embodiment, since the suction port 24 is opened in the stacking surface 21, even if the second and subsequent media S are discharged from the discharge port 19, the suction port 24 is blocked. The rate of peeling does not vary greatly. That is, even if the loading amount of the medium S loaded on the loading unit 22 increases, the ratio of the suction ports 24 blocked by the medium S does not change greatly.

  In the second embodiment, the suction port 24 is blocked by the medium S when the number of the media S stacked on the stacking unit 22 is zero and when the number of the media S is one or more. The ratio varies greatly. Therefore, in the second embodiment, the control unit 30 reduces the suction amount of the suction unit 61 when the medium S is in the stacking unit 22 compared to when the medium S is not in the stacking unit 22. In other words, the control unit 30 reduces the suction amount of the suction unit 61 based on a part of the suction port 24 being blocked by the medium S. The control unit 30 controls the work amount of the suction unit 61 according to the area of the suction port 24 that is blocked by the medium S loaded on the stacking unit 22 and decreases.

  The control unit 30 grasps the presence or absence of the medium S loaded on the stacking unit 22 by the detection unit 36. When there is no medium S in the stacking unit 22, the control unit 30 does not change the suction amount of the suction unit 61. That is, the suction unit 61 sucks the gas with the first suction amount set as the initial value. That is, the suction unit 61 is driven with the first work amount set as the initial value.

  When there is a medium S in the stacking unit 22, the control unit 30 makes the suction amount of the suction unit 61 smaller than when there is no medium S in the stacking unit 22. That is, the suction unit 61 sucks gas with a second suction amount that is smaller than the first suction amount. That is, the suction unit 61 is driven with a second work amount smaller than the first work amount.

  As shown in FIG. 8, in the second embodiment, when the stacking height of the medium S, that is, the stacking amount of the medium S increases, it is difficult to suck the gas below the medium S discharged from the discharge port 19. Become. Therefore, in the second embodiment, it is preferable that the control unit 30 increases the suction amount of the suction unit 61, that is, the work amount of the suction unit 61, based on an increase in the stacking height of the medium S.

  In the second embodiment, for example, the control unit 30 is preliminarily defined with a prescribed value for determining the stacking height of the medium S in two patterns of “low” and “high”. The control unit 30 compares the stack height detected by the detection unit 36 with the specified value.

  The control unit 30 determines that the stacking height of the medium S is “low” when the stacking height of the medium S is smaller than the specified value. In this case, the control unit 30 does not change the suction amount of the suction unit 61. That is, the suction unit 61 sucks the gas by the first suction amount when there is no medium S in the stacking unit 22, and sucks the gas by the second suction amount when the medium S is in the stacking unit 22. That is, the suction unit 61 is driven with the first work amount when the stacking unit 22 does not have the medium S, and is driven with the second work amount when the stacking unit 22 has the medium S.

  The control unit 30 determines that the stacking height of the medium S is “high” when the stacking height of the medium S is equal to or greater than the specified value. In this case, the control unit 30 makes the suction amount of the suction unit 61 larger than when the stacking height of the medium S is “small”. At this time, since the medium S is loaded on the stacking unit 22, the control unit 30 causes the suction unit 61 to gas the suction unit 61 with a fourth suction amount larger than the second suction amount. To suck. The fourth suction amount is preferably smaller than the first suction amount. That is, the suction unit 61 is driven with a fourth work amount larger than the second work amount when the stacking height of the medium S is equal to or greater than a specified value.

  When the stack height of the medium S detected by the detection unit 36 is high, the suction amount of the suction unit 61 is increased, and the medium S stacked on the stacking unit 22 and the discharge port 19 are discharged. The gas between the medium S is effectively sucked. In summary, the control unit 30 reduces the suction amount of the suction unit 61 when the second medium S is discharged. The control unit 30 increases the suction amount of the suction unit 61 as the stacking height of the medium S increases. That is, the control unit 30 changes the suction amount of the suction unit 61 based on the stacking height of the medium S. That is, the control unit 30 changes the work amount of the suction unit 61 based on the stacking height of the medium S.

According to the second embodiment described above, the following effects can be obtained in addition to the effects (1), (4), (5), and (6) in the first embodiment described above.
(7) The suction port 24 opens in the stacking surface 21. Therefore, the gas below the medium S discharged from the discharge port 19 can be preferably sucked by the suction portion 61 from the side where the stacking surface 21 is located.

  (8) The control unit 30 increases the work amount of the suction unit 61 based on an increase in the loading height of the medium S loaded on the loading unit 22. Since the suction port 24 is provided in the stacking unit 22, when the stacking height of the medium S stacked on the stacking unit 22 increases, the stacked medium S lowers the medium S discharged from the discharge port 19. It becomes difficult for the suction part 61 to suck the gas. Therefore, the work amount of the suction unit 61 is increased based on the increase in the loading height of the medium S loaded on the loading unit 22. Thereby, the gas below the medium S discharged from the discharge port 19 can be suitably sucked by the suction unit 61 with a large work amount.

In addition, you may change each said embodiment as follows. Further, the following modifications may be combined as appropriate.
As shown in FIG. 9, in the first embodiment, the suction port 24 is not limited to the outer wall 23, and may open to the side wall 25. The suction port 24 opening in the side wall 25 is located below the discharge port 19. The suction port 24 opened in the side wall 25 is a slit-like opening extending in the vertical direction of the recording apparatus 11. A plurality of suction ports 24 opening in the side wall 25 are provided side by side in the width direction of the recording apparatus 11 on the side wall 25.

According to this modified example, the following effects can be obtained.
(9) The gas below the medium S discharged from the discharge port 19 can be preferably sucked by the suction part 61. Further, since the suction port 24 is opened in the outer wall 23 and the side wall 25, the gas on the loading surface 21 can be sucked from multiple directions including the side where the outer wall 23 is located and the side where the side wall 25 is located. Therefore, the gas on the loading surface 21 can be sucked more uniformly.

The suction port 24 may be provided only on the side wall 25.
According to this modified example, the following effects can be obtained.
(10) The gas below the medium S discharged from the discharge port 19 can be preferably sucked by the suction portion 61 from the side where the side wall 25 is located.

  In this modification, the recording apparatus 11 may include a side wall facing the side wall 25 on the front side in the depth direction. This side wall extends continuously with the outer wall 23 and the loading portion 22. And the suction port 24 may be opened in the side wall. According to this, the gas on the loading surface 21 can be sucked from three sides. Therefore, the gas on the loading surface 21 can be sucked more uniformly. The suction port 24 may be provided only on the side wall 25. If the suction port 24 is provided in at least one of the outer wall 23, the side wall 25, and the side wall facing the side wall 25, the gas on the stacking surface 21 can be sucked.

  In the first embodiment, the suction port 24 is not limited to the outer wall 23 and may be opened on the loading surface 21 as in the second embodiment. That is, the configuration of the first embodiment and the configuration of the second embodiment may be combined.

In the first embodiment, the suction port 24 may be provided so as to extend obliquely with respect to the vertical direction of the recording apparatus 11.
As shown in FIG. 14, in the first embodiment, a plurality of suction ports 24 may be provided as round hole-like openings arranged in the vertical direction instead of the slits. A plurality of openings are also provided in the outer wall 23 in the depth direction of the recording apparatus 11. The round hole-shaped opening may be provided also on the side wall 25 or may be provided only on the side wall 25.

According to this modified example, the following effects can be obtained.
(11) Since a plurality of suction ports 24 are provided as openings arranged in the vertical direction, the possibility that the medium S stacked on the stacking unit 22 is sucked into the suction ports 24 can be reduced.

  As shown in FIGS. 10 and 11, in the second embodiment, the suction port 24 that opens to the stacking surface 21 may be provided in a round shape. In this case, the stacking unit 22 may not have the rib 71. A plurality of round suction ports 24 are provided on the stacking surface 21 so as to be arranged at equal intervals in the depth direction and the width direction of the recording apparatus 11.

  In the suction port 24 penetrating the stacking portion 22, a portion on the stacking surface 21 side is a tapered portion 72 that is inclined so as to spread toward the stacking surface 21. According to this, even if the corner portion of the medium S discharged from the discharge port 19 enters the suction port 24, the corner portion can be scooped up by the tapered portion 72. That is, the corner portion of the medium S that has entered the suction port 24 can be returned onto the stacking surface 21 by the tapered portion 72.

  Further, as shown in FIG. 12, a drop-shaped suction port 24 may be provided instead of the round-shaped suction port 24. In this case, the suction port 24 preferably opens in the stacking surface 21 so that the narrowed side in the drop shape faces the side where the cover 16 is located in the width direction of the recording apparatus 11, that is, the first end side.

  In addition, as shown in FIG. 13, a triangular suction port 24 may be provided instead of the round suction port 24. In this case, the suction port 24 is opened on the stacking surface 21 so that one corner portion which is the apex in the triangular shape faces the side where the cover 16 is positioned in the width direction of the recording apparatus 11, that is, the first end side. It is preferable to do.

  In the second embodiment, the suction unit 61 may be configured to blow the sucked gas toward the third supply path 43. In this case, the suction unit 61 blows gas from above the third supply path 43. That is, the suction unit 61 blows gas onto the surface on which the image is recorded by the recording unit 32 against the medium S conveyed through the third supply path 43. Therefore, drying of the medium S can be promoted.

  In each of the above embodiments, the detection unit 36 may not be provided. In this case, the control unit 30 may be configured to count the number of media S discharged from the discharge port 19. The control unit 30 may control the suction unit 61 based on the count number. Based on the counted number, the control unit 30 grasps the loading amount of the medium S loaded on the loading unit 22 and grasps the ratio of the suction ports 24 that are blocked by the medium S among the suction ports 24. In other words, the control unit 30 grasps the loading amount of the medium S loaded on the loading unit 22 based on the count number, and the suction port 24 is blocked by the medium S loaded on the loading unit 22 and decreases. The work of the suction part 61 is controlled according to the open area.

According to this modified example, the following effects can be obtained.
(12) Since the medium S discharged from the discharge port 19 is stacked on the stacking unit 22, when the discharge number of the medium S discharged from the discharge port 19 increases, the ratio of the medium S blocked by the suction port 24 increases. Increase. Therefore, according to this modified example, the ratio of the suction ports 24 that are blocked by the medium S can be grasped based on the number of discharged medium S discharged from the discharge port 19. That is, the work amount of the suction unit 61 can be changed according to the area of the suction port 24 that is reduced by being blocked by the medium S loaded on the stacking unit 22.

  In each embodiment described above, the control unit 30 may change the suction amount of the suction unit 61 based on the size of the medium S discharged from the discharge port 19. For example, when the gas is sucked with the first suction amount set as the initial value, when the medium S having a small size is discharged from the discharge port 19, the suction may be too strong. If the suction is too strong, the alignment of the media S stacked on the stacking unit 22 may be deteriorated. Therefore, the control unit 30 controls the suction unit 61 based on the size of the medium S. Specifically, the control unit 30 reduces the suction amount of the suction unit 61 when the size of the medium S discharged from the discharge port 19 is smaller than the size of the medium S that is normally used.

According to this modified example, the following effects can be obtained.
(13) Depending on the size of the medium S, the suction by the suction unit 61 may be too strong. Therefore, for example, when the size of the medium S discharged from the discharge port 19 is smaller than the size of the medium S that is normally used, the work amount of the suction unit 61 is reduced. That is, according to the above configuration, the work amount of the suction unit 61 can be appropriately controlled based on the size of the medium S.

  In each of the above embodiments, the suction channel 63 and the air flow channel 54 may not be connected to each other. In this case, the suction channel 63 may be configured to extend so that the gas sucked through the suction port 24 is blown to a substrate or the like included in the recording apparatus 11. That is, the gas sucked by the suction unit 61 may be used for cooling the members constituting the recording apparatus 11. The gas sucked by the suction unit 61 may be simply discharged to the outside of the housing 12.

In each of the above embodiments, the air blowing unit 51 may not be provided.
In each of the above embodiments, the loading surface 21 of the loading unit 22 may be configured to extend horizontally.
In each of the above embodiments, the control unit 30 may be configured to linearly control the suction amount of the suction unit 61 based on the stacking amount of the medium S stacked on the stacking unit 22.

  In each of the above embodiments, the processing unit is not limited to the recording unit 32 that records an image on the medium S. For example, the processing unit that performs processing on the medium S may be a cutting unit that cuts the medium S into a desired size, or may be a reading unit that reads an image on the medium S. That is, the medium processing apparatus is not limited to the recording apparatus 11 and may be a cutting apparatus or a reading apparatus. As long as the apparatus performs processing on the medium S, the configuration of each of the above embodiments can be employed.

In each of the above embodiments, the medium S is not limited to paper, but may be a plastic film, a metal film, a fabric, or the like.
In each of the above embodiments, the recording apparatus 11 is supplied as a fluid other than ink (a liquid, a liquid obtained by dispersing or mixing functional material particles in a liquid, a fluid such as a gel, or a fluid. It may be a fluid ejecting apparatus that performs recording by ejecting or ejecting a solid that can be ejected). For example, recording is performed by ejecting a liquid material in which a material such as an electrode material or a color material (pixel material) used for manufacturing a liquid crystal display, an EL (electroluminescence) display, and a surface emitting display is dispersed or dissolved. A liquid ejecting apparatus may be used. Also, a fluid injection device for injecting a fluid such as a gel (eg, physical gel), a powder injection device (eg, a toner jet type) for injecting a solid such as powder (particles) such as toner Recording device). The present invention can be applied to any one of these fluid ejecting apparatuses. In this specification, “fluid” means, for example, liquid (including inorganic solvent, organic solvent, solution, liquid resin, liquid metal (metal melt), etc.), liquid, fluid, powder (grain) Body and powder).

  DESCRIPTION OF SYMBOLS 11 ... Recording apparatus (medium processing apparatus) 19 ... Discharge port, 21 ... Loading surface, 22 ... Loading part, 23 ... Outer wall, 24 ... Suction port, 25 ... Side wall, 30 ... Control part, 32 ... Recording part (Processing part) , 34... Roller, 36... Detection unit, 51... Blower unit, 61... Suction unit, 62.

Claims (12)

A processing unit for processing a sheet-like medium;
An outer wall having an opening through which the medium processed by the processing unit is discharged;
A stacking unit having a stacking surface on which the medium discharged from the discharge port is stacked;
A suction part for sucking the gas on the loading surface through a suction port provided below the discharge port;
A control unit for controlling the amount of work of the suction unit,
The control unit reduces a work amount of the suction unit according to an opening area of the suction port which is blocked and reduced by the medium loaded on the stacking unit. apparatus.   The medium processing apparatus according to claim 1, wherein the suction port is open to the stacking surface.   The medium processing apparatus according to claim 2, wherein the control unit increases a work amount of the suction unit based on an increase in a stacking height of the medium loaded on the stacking unit.   The medium processing apparatus according to claim 1, wherein the suction port opens in the outer wall. A side wall extending continuously to the outer wall and the loading portion;
The medium processing apparatus according to claim 1, wherein the suction port is opened in the side wall.   A plurality of the suction ports are provided as slit-like openings extending in the vertical direction, and the control unit is reduced by blocking a part of each of the plurality of suction ports by the medium loaded on the stacking unit. The medium processing apparatus according to claim 4, wherein a work amount of the suction unit is reduced in accordance with an opening area of the suction port.   A plurality of the suction ports are provided as openings arranged in the vertical direction, and the control unit reduces the suction by reducing a part of the plurality of the suction ports by the medium loaded on the stacking unit. 6. The medium processing apparatus according to claim 4, wherein a work amount of the suction unit is reduced in accordance with an opening area of the mouth. A detection unit capable of detecting a loading amount of the medium loaded on the loading unit;
The medium processing apparatus according to claim 1, wherein the control unit changes a work amount of the suction unit based on detection by the detection unit.   2. The control unit according to claim 1, wherein the control unit is capable of counting the number of discharges of the medium discharged from the discharge port, and changes the work amount of the suction unit based on the number of discharges of the medium. The medium processing apparatus according to claim 7. A blowing section for blowing the gas sucked by the suction section;
The medium processing apparatus according to any one of claims 1 to 9, wherein the blower blows a gas toward the stacking surface from above the discharge port.   The said control part changes the work amount of the said suction part based on the size of the said medium discharged | emitted from the said discharge port, The Claim 1 thru | or 10 characterized by the above-mentioned. Media processing device.   12. The medium processing apparatus according to claim 1, wherein the processing unit is a recording unit that records on the medium.