JP3699838B2 - Image forming apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image forming apparatus such as a digital copying machine, a printer, and a facsimile, and more particularly to an image forming apparatus including a paper discharge unit and a relay conveyance unit that communicates between an attached paper post-processing device.
[0002]
[Prior art]
In recent years, with the digitization of electrophotographic devices, etc., copying, printers, facsimiles, etc. have become more complex, and not only original recording operations and productivity, but also recording operations including post-processing such as sorting, stacking and punching Increasing overall productivity has become a manifestation of user needs. On the other hand, there is a strong demand for space saving and miniaturization such as reducing the size of the apparatus.
Against this background, so-called in-machine discharge methods for discharging recording paper into the apparatus are increasing. In the in-machine discharge method, a sheet post-processing apparatus is arranged outside the apparatus in order to achieve both space saving and recording sheet productivity. In such a configuration, in order to achieve both the in-machine discharge and the post-processing function, a relay conveyance unit that connects the discharge port for normal discharge and the sheet post-processing device is required.
[0003]
In order to avoid coexistence of copy output, printer output, and facsimile output, it is necessary to provide a large number of discharge destinations. From this viewpoint, a 1-bin discharge tray is often formed near the upper portion of the relay conveyance unit. .
Since the relay conveyance unit has a paper conveyance configuration inside due to its function, the occurrence of paper jam is inevitable. Therefore, the upper part of the relay transport unit is configured as a pivotable opening / closing cover that is pivotally supported at one end to facilitate jam processing, and when a jam occurs, the opening / closing cover is rotated upward to jam. A processing space is secured.
[0004]
However, since the height of the apparatus including the image reading apparatus must be kept low from the viewpoint of operability, the space between the relay conveyance unit and the paper discharge tray or the like positioned on the upper side must be narrowed. The open / close cover cannot be opened sufficiently, so that there is a problem that jam processing is not easy.
[0005]
In order to cope with this problem, Japanese Patent Application Laid-Open No. 9-301602 discloses a technique for increasing the degree of opening by making the opening / closing cover of the relay transport unit into a divided configuration and opening and closing each divided portion by pivoting one end. Proposed.
More specifically, as shown in FIG. 15, an image reading device 106 is provided on the upper portion of the image forming apparatus main body 100 via spacers 102 and 104. A sheet post-processing device 108 is attached.
A relay conveyance unit 112 is provided on the upper surface of the image forming apparatus main body 100 to connect the normal paper discharge unit 110 and the paper post-processing device 108. The upper part of the relay transport unit 112 is composed of two opening / closing covers 114 and 116 that are pivotally supported at one end and are rotatable in the vertical direction.
When a paper jam occurs inside the relay conveyance unit 112, as shown by a two-dot chain line, the respective opening / closing covers 114 and 116 are rotated upward, thereby obtaining a jam processing space. In this way, the opening / closing cover is divided into two parts, and each of the opening / closing covers is pivotally supported in the vertical direction by pivoting on one end side. It can be made small and can be almost completely opened even in a narrow space.
[0006]
[Problems to be solved by the invention]
However, in the configuration in which the opening / closing cover is divided as described above, the operator has to rotate each opening / closing cover, and thus the operation is troublesome, and the manufacturing cost is inevitably increased due to the complexity of the configuration. There was a problem.
In order to cope with a narrower space, it is necessary to increase the number of divisions of the opening / closing cover in order to reduce the length of the division pieces. In this case, the problems of operability and cost increase in proportion to the division number.
In the above-mentioned JP-A-9-301602, there is a technique for providing an open / close cover having a single plate structure so as to be rotatable upward, and allowing a tray positioned above to be rotated so as not to prevent the rotation of the open / close cover. In addition, a technique for rotating the opening / closing cover in a state in which the relay conveyance unit can be pulled out in the horizontal direction and pulled out without an interference member on the upper side is also disclosed. The problem was occurring as well.
[0007]
Therefore, an object of the present invention is to provide an image forming apparatus that can secure a sufficient jam processing space with a simple operation even in a narrow space, and can suppress the complexity of the configuration and the increase in manufacturing cost.
In order to achieve the above object, the present invention is configured such that the entire opening / closing cover having a single plate configuration can be displaced in the vertical direction.
Specifically, according to the first aspect of the present invention, the relay conveyance unit is provided in the internal space of the apparatus main body, and conveys the paper discharged from the paper discharge unit of the apparatus main body to the paper post-processing device attached to the apparatus main body. And another member for discharging the paper passing through a conveyance path different from the relay conveyance unit provided in the internal space, and the relay conveyance unit is provided with an opening / closing cover for jamming processing. In the image forming apparatus, the opening / closing cover is in a space restricted by the presence of the other member in the internal space via a support member so that the posture after opening is substantially parallel to the posture before opening . Therefore, it is configured to be displaceable relative to the other members .
[0008]
According to a second aspect of the present invention, in the configuration according to the first aspect, the support member includes a first hinge portion that rotatably supports the opening / closing cover and a first hinge portion that rotates in the vertical direction. The second hinge portion that is movably supported is employed.
[0009]
According to a third aspect of the present invention, in the configuration according to the second aspect, the one end side of the opening / closing cover supported by the first hinge portion is substantially parallel to the paper transport direction.
[0010]
According to a fourth aspect of the present invention, in the configuration of the second aspect, the one end side of the opening / closing cover supported by the first hinge portion is substantially perpendicular to the paper transport direction.
[0011]
The invention described in claim 5 employs a configuration in which, in the configuration described in claim 2, 3 or 4, a spring member is provided for urging so as to eliminate the folding angle of the opening / closing cover with respect to the first hinge portion. ing.
[0012]
According to a sixth aspect of the present invention, in the configuration according to the fifth aspect, a guide member is provided on the unit main body side to contact the open / close cover when the open / close cover is opened at a predetermined angle to guide the open / close cover substantially in parallel. It has the structure of being.
[0013]
According to a seventh aspect of the present invention, in the configuration according to any one of the first to sixth aspects, by opening the opening / closing cover, a jam processing space from the front side of the apparatus main body to the back side is formed . The structure is adopted.
[0014]
According to an eighth aspect of the present invention, in the configuration according to any one of the first to ninth aspects, the inner space is opened on the front side of the apparatus main body, the direction of taking out the paper from the other member, and the jam processing. Both directions are from the front side of the apparatus main body to the back side .
[0019]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
As schematically shown in FIG. 1, a digital copying machine 2 as an image forming apparatus includes an apparatus main body 4, a relay conveyance unit 6 installed substantially horizontally on the upper surface of the apparatus main body 4, and a relay conveyance unit 6. The apparatus is mainly composed of a one-bin paper discharge tray 8 (for example, for facsimile output) provided in the vicinity of the upper part for discharging inside the apparatus, and an image reading means 10 installed at the top of the apparatus main body 4. Although not shown, the image reading unit 10 includes known reading elements such as an illumination lamp, a reflection mirror, and an imaging lens.
A finisher 12 as a sheet post-processing device is attached to one side of the apparatus body 4, and the sheet discharged from the normal sheet discharge unit 14 of the apparatus body 4 is transported by the relay transport unit 6, and the entrance roller 16 pairs are received in the finisher 12.
[0020]
The apparatus main body 4 is provided with an image forming unit 20 having a photosensitive member 18 and the like. The image forming unit 20 is located at the center, a paper feeding unit 22 is provided below, and a fixing is provided above. A unit 24 and a normal paper discharge unit 14 are provided. Note that writing means and the like are omitted.
The normal paper discharge unit 14 includes a pair of paper discharge rollers 14 a and the like, and a paper discharge unit 26 corresponding to facsimile output is formed above the normal paper discharge unit 14. The paper discharge unit 26 includes a paper discharge roller pair 26a and the like.
The paper supply unit 22 includes a plurality of paper supply trays 22a and 22b, each of which stores, for example, paper of different sizes.
[0021]
With the above-described serial arrangement in the vertical direction with the image forming unit 20 at the center, the conveyance path 28 extends in a substantially vertical direction (from the paper supply unit 22 through the image forming unit 20 to the normal paper discharge unit 14). Is formed.
The main process equipment of the image forming unit 20 and the paper feeding unit 22 are built in the apparatus main body 4, and most of the conveyance path 28 is opened by opening the side plate of the apparatus main body 4. This facilitates jam processing from the paper supply unit 22 to the normal paper discharge unit 14.
[0022]
The predetermined paper selected from the paper supply unit 22 is sent to the image forming unit 20 by the registration roller pair 30 at a predetermined timing, and the target image is transferred by a transfer unit (not shown). The sheet on which the image has been formed is sent to the fixing unit 24 by the sheet conveying means 32 and fixed as a permanent image.
The sheet on which the fixing is completed is selectively guided to the normal paper discharge unit 14 or the paper discharge unit 26 corresponding to facsimile output by the position control of the branching claw 34 by a control unit (not shown). The sheet sent to the paper discharge unit 26 is discharged to the paper discharge tray 8. In FIG. 1, reference numeral 27 indicates a pair of conveying rollers.
[0023]
The sheet normally sent to the paper discharge unit 14 enters the relay conveyance unit 6, and the conveyance path in the relay conveyance unit 6 includes a conveyance path A toward the unit paper discharge unit 36 having a discharge roller pair 36 a and the finisher. 12 and is selectively guided by position control of the branch claw 38 by a control means (not shown).
The sheets guided to the conveyance path A are stacked on the upper surface of the opening / closing cover 40 of the relay conveyance unit 6. The upper surface of the opening / closing cover 40 is a discharge tray for discharging inside the apparatus, and can function as, for example, a discharge tray for printer output.
The sheet guided to the conveyance path B is conveyed by the conveyance roller pairs 42, 44, 46, 48, and the like, and is sent into the finisher 12. For example, the sheet fed into the finisher 12 is discharged as it is to a discharge tray (not shown) formed in the finisher 12 without performing a binding process, or is discharged to the same discharge tray after performing a binding process.
[0024]
As shown in FIG. 2, the relay conveyance unit 6 includes a base member 50 as a unit body, an opening / closing cover 40, and the like, and the unit paper discharge unit 36 is formed integrally with the base member 50. One of the conveying roller pairs 44, 46, 48 is provided on the base member 50 side, and the other is provided on the opening / closing cover 40 side. The opening / closing cover 40 is indicated by hatching so that the shape thereof can be easily understood.
As shown in FIG. 3, the opening / closing cover 40 is supported by one support member 52 so that one end side substantially parallel to the paper transport direction can be displaced upward. Also in FIG. 3, the opening / closing cover 40 is indicated by hatching so that the shape thereof can be easily understood.
[0025]
As shown in FIG. 4, the support member 52 includes a first hinge portion 54 that supports the opening / closing cover 40 so as to be pivotable in the vertical direction, and a second hinge that pivotally supports the first hinge portion 54 in the vertical direction. A hinge portion 56 is provided. The first hinge portion 54 includes a substantially half portion of a rectangular support plate 58 as a main body of the support member 52, and cylindrical convex portions 58 a and 58 b protruding from both sides of the support plate 58. A U-shaped notch 40a is formed at the center of one end of the opening / closing cover 40, and shaft holes (not shown) are formed on both sides of the notch 40a. The projections 58a and 58b are inserted into these shaft holes, and the opening / closing cover 40 is supported so as to be rotatable in the vertical direction.
[0026]
The second hinge portion 56 is formed on the base member 50 corresponding to the other substantially half portion of the support plate 58, columnar projections 58 c and 58 d protruding from both sides of the support plate 58, and both sides of the support plate 58. It has fixed support pieces 60,60. Shaft holes (not shown) are formed in each support piece 60, and the convex portions 58 c and 58 d are inserted into these shaft holes, and the first hinge portion 54 side including the opening / closing cover 40 is rotatably supported in the vertical direction. Has been.
FIG. 4A shows a normal state in which the sheet can be conveyed toward the finisher 12. Note that the conveyance roller and the like are omitted. When a jam occurs in the transport path B of the relay transport unit 6, it is necessary to perform jam processing by displacing the opening / closing cover 40. In this embodiment, as shown in FIGS. In addition, the two-stage hinge function of the support member 52 allows the opening / closing cover 40 to be displaced upward, for example, while maintaining a substantially horizontal state, so that the posture before opening and after opening is substantially parallel. be able to.
Therefore, it is possible to obtain a jam processing space having the same height on the near side and the far side for the operator. In FIG. 5, reference numeral 62 indicates a discharge port of the unit discharge unit 36, and reference numeral 64 indicates a delivery port to the finisher 12.
[0027]
As shown in FIG. 1, a paper output tray 8 for facsimile output lies in the vicinity of the upper portion of the opening / closing cover 40, and the space for displacing the opening / closing cover 40 for jam processing is extremely small. In such a narrow space, the single-plate opening / closing cover 40 is pivotally supported by pivoting one end side as in the prior art, and the degree of opening using the upper space to the maximum is obtained only at a part of the free end side. In other words, the degree of opening gradually decreases toward the pivot end.
However, according to the configuration of the present embodiment, the opening / closing cover 40 finally becomes substantially parallel to the state before opening, so that the degree of opening can be made uniform over the entire area of the opening / closing cover 40 and the presence of other members. The space constrained by can be used to the maximum. Further, since the opening / closing cover 40 has a single plate configuration, it is easier for the operator to handle than the case of the conventional split configuration, and the opening operation is facilitated.
[0028]
Next, another embodiment will be described with reference to FIG.
In the above-described embodiment, the configuration in which one end side of the opening / closing cover 40 supported by the first hinge portion 54 is substantially parallel to the sheet conveying direction is shown. However, in this embodiment, as shown in FIG. One end side of the opening / closing cover 40 supported by 54 is configured to be substantially perpendicular to the sheet conveyance direction. In this case, a hollow portion is formed in the wall portion of the base member 50 instead of the support piece 60, and a shaft hole is formed in the side surface to form the second hinge portion 56.
FIG. 6 shows an example in which the downstream end portion of the end portions that are substantially perpendicular to the sheet conveyance direction is supported by the support member 52, but the upstream end portion may be supported.
Since the configuration other than the relay conveyance unit 6 in this embodiment is the same as that in the above embodiment, the description thereof is omitted (the same applies to the following embodiments).
[0029]
Next, another embodiment will be described with reference to FIG. In addition, the installation form of the support member 52 is the same as that shown in FIG. 5 (the same applies to the following embodiments).
A spring 66 as a spring member is fitted to each of the cylindrical convex portions 58a and 58b of the first hinge portion 54, and the left and right free ends of the spring 66 are spring receiving portions 58e formed on the support plate 58, and It is fixed to a spring receiving portion 40 b formed on the opening / closing cover 40. The spring 66 is set so as to eliminate the folding angle of the opening / closing cover 40 with respect to the first hinge portion 54, and FIG. 7A shows a state in which the sheet can be conveyed with the opening / closing cover 40 closed.
[0030]
In the opening operation of the opening / closing cover 40, only the hinge function of the second hinge portion 56 is exhibited until the opening / closing cover 40 comes into contact with the upper obstacle, that is, the paper output tray 8 for facsimile output, and is supported by the opening / closing cover 40. The plate 58 rotates as an integral object. When the opening / closing cover 40 comes into contact with the paper discharge tray 8, the opening / closing cover 40 rotates with respect to the first hinge portion 54, and a two-stage hinge function is developed to finally open and close as shown in FIG. The cover 40 is substantially parallel to the posture before opening.
When closing the opening / closing cover 40, the biasing force of the spring 66 is applied so as to eliminate the folding angle of the opening / closing cover 40 with respect to the first hinge portion 54, that is, to increase the angle θ between the opening / closing cover 40 and the support plate 58. Since it is acting, this urging force is added to the closing operation, and the labor of the operator is reduced.
[0031]
Next, another embodiment will be described with reference to FIG.
In this embodiment, a guide 68 is provided on the base member 50 side as a guide member that can be displaced in the vertical direction under a constant pressure via a support member (not shown). After the opening / closing cover 40 is opened at a predetermined angle and contacts the guide 68, only the support member 52 rotates as shown in FIG. 8B, and the opening / closing cover 40 moves substantially in parallel. In the case of the present embodiment, after the opening / closing cover 40 contacts the guide 68, the opening / closing cover 40 can be opened smoothly and easily because the opening / closing cover 40 may be simply pushed. In this embodiment, the back side of the base member 50, that is, the back side of the support member 52 is formed by the sheet metal member 70. However, the same structure may be used in the above-described embodiments.
[0032]
Next, a first reference embodiment will be described with reference to FIG.
The relay conveyance unit 6 in the present embodiment has a locking means 72 that fixes the support member 52 when the opening / closing cover 40 is opened. The locking means 72 has a magnet 74 fixed to the back side of the support member 52 and a plate 76 made of a ferromagnetic material fixed to the back side wall surface of the base member 50.
When the opening / closing cover 40 is opened to obtain a jam processing space, the magnet 74 and the plate 76 are brought into close contact with each other by a magnetic force, and the support member 52 is fixed in position. When the position of the support member 52 is not fixed, the two-stage hinge function always tries to act. Therefore, the operator needs to hold the opening / closing cover 40 so as to correct the instability. Although there is a concern that the opening / closing cover 40 is closed, when the support member 52 is fixed in position as in the present embodiment , the operator only supports the front side of the opening / closing cover 40 so as not to hang down. Since the entire posture is maintained and the jam processing space is secured, the labor of the operator is reduced and the jam processing is facilitated. The attachment positions of the magnet 74 and the plate 76 may be reversed.
[0033]
Next, a second reference embodiment (a modification in which the support member 52 is fixed) will be described with reference to FIGS. 10 and 11.
The locking means 78 in the present embodiment has an elastically deformable recess 80 fixed to the back side wall surface of the base member 50 and a columnar protrusion 82 that can be snap-engaged with the recess 80. . When the opening / closing cover 40 is opened, the convex portion 82 is forced into the concave portion 80 and held by the pressing force. As a result, the position of the support member 52 is fixed, and the same advantages as those of the first reference embodiment can be obtained.
[0034]
Next, a third reference embodiment will be described with reference to FIG.
In each of the above embodiments, the opening / closing cover 40 is supported by one support member 52. However, in this reference embodiment , as shown in FIG. 12, one end side substantially parallel to the sheet conveyance direction is provided with two support members. The support member 52 and the support member 52 are integrally connected by the connecting member 84.
As described above, by supporting the plurality of support members 52, the opening / closing operation of the opening / closing cover 40 can be stabilized. When each support member 52 is not connected in structure, as shown in FIG. 13, there is a concern that only the hinge function by one support member 52 can be obtained. You can eliminate concerns.
[0035]
Next, a fourth reference embodiment (a modification of the type supported by a plurality of support members 52) will be described with reference to FIG.
As described above, when the support members 52 are not structurally connected, there is a concern that only the hinge function by one of the support members 52 can be obtained, but in the present embodiment , the support members 52 are not connected. It was set as the structure which eliminates the said concern.
As shown in FIG. 14, leg pieces 86 and 86 are fixed to both ends of the opening / closing cover 40 opposite to the support end side, and a convex portion 86a protruding in the sheet conveying direction is formed at the lower end thereof. ing. On the base member 50 side, recesses 88 and 88 for receiving the leg pieces 86 and 86 when the opening / closing cover 40 is closed are formed, and guide grooves 90 and 90 with which the protrusions 86a are engaged are formed. ing. The guide groove 90 is curved so as to follow the trajectory of the leg pieces 86 and 86 when the opening / closing cover 40 is opened.
In this case, since both ends of the front end portion of the opening / closing cover 40 are simultaneously displaced by the engagement configuration of the leg pieces 86, 86 and the guide groove 90, even if the support members 52 are not connected. There is no concern that only the hinge function of one of the support members 52 is manifested when the opening / closing cover 40 is opened and closed.
[0036]
【The invention's effect】
According to the first aspect of the present invention, the opening / closing cover is configured to be displaceable via the support member so that the posture after opening is substantially parallel to the posture before opening. Can be used to obtain a uniform degree of opening in the entire range of the open / close cover, and a sufficient jam processing space can be secured even in a narrow space.
Compared to the configuration in which the opening / closing cover is divided, the opening / closing operation is easy, and the complexity of the configuration and the increase in manufacturing cost can be suppressed.
[0037]
According to the second to fourth aspects of the present invention, since only the rotation radius of the support member 52 is required as the displacement space of the opening / closing cover, a sufficient jam processing space can be ensured by a simple operation even in a narrow space.
[0038]
According to the fifth aspect of the present invention, since the spring member that biases the opening / closing cover to take the closed state is provided, the opening / closing operation of the opening / closing cover can be facilitated.
[0039]
According to the sixth aspect of the present invention, since the guide member that contacts and guides substantially parallel when the opening / closing cover is opened at a predetermined angle is provided, the opening / closing operation of the opening / closing cover can be further facilitated. .
[Brief description of the drawings]
FIG. 1 is an overall front view of an outline of an image forming apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic front view of a relay conveyance unit.
FIG. 3 is a schematic plan view of a relay conveyance unit.
4A and 4B are cross-sectional views showing the opening / closing operation (two-stage hinge function) of the opening / closing cover in the relay conveyance unit, where FIG. 4A shows a closed state and FIG. 4B shows a state in the middle of opening.
FIG. 5 is a schematic perspective view of the relay conveyance unit in a state where an opening / closing cover is opened.
FIG. 6 is a perspective view of a relay conveyance unit of an example in which the installation of support members is different.
7A and 7B are schematic cross-sectional views of the main part of an example having a spring member between the first hinge part and the opening / closing cover, in which FIG. 7A shows a state in which the opening / closing cover is closed, and FIG. Is shown.
FIG. 8 is a schematic cross-sectional view of a main part of an example in which a spring member is provided between the first hinge part and the opening / closing cover and a guide member is provided above the opening / closing cover, and FIG. b) shows a state in which the opening / closing cover is opened.
FIG. 9 is a schematic cross-sectional view of an essential part of an example having locking means for fixing the position of a support member when an opening / closing cover is opened.
FIG. 10 is a schematic cross-sectional view of the main part of another example having a locking means for fixing the position of the support member when the opening / closing cover is opened.
11 is a schematic plan view of a main part of the example shown in FIG.
12 is a schematic perspective view of a relay conveyance unit in a state where an opening / closing cover is opened in an example having a plurality of support members. FIG.
FIG. 13 is a perspective view of a relay conveyance unit showing a defect in an example having a plurality of support members.
FIG. 14 is a schematic perspective view of a relay conveyance unit as another example that can solve the problem in the case of having a plurality of support members.
FIG. 15 is a main part schematic front view showing an open / close structure of a conventional open / close cover.
[Explanation of symbols]
4 apparatus main body 6 relay conveyance unit 12 finisher 14 as sheet post-processing apparatus normal sheet discharge section 40 as sheet discharge section open / close cover 52 support member 54 first hinge section 56 second hinge section 68 guides 72 and 78 as guide members Locking means 80 Concave portion 82 Convex portion

Claims (8)

A relay transport unit that transports paper discharged from a paper discharge section of the apparatus main body provided in an internal space of the apparatus main body to a paper post-processing device attached to the apparatus main body; and the relay transport unit provided in the internal space; In the image forming apparatus in which the sheet passing through another conveyance path is discharged and the relay conveyance unit is provided with an open / close cover for jamming.
The opening / closing cover is positioned against the other member in a space constrained by the presence of the other member in the internal space via a support member so that the posture after opening is substantially parallel to the posture before opening. An image forming apparatus, wherein the image forming apparatus is relatively displaceable. The image forming apparatus according to claim 1.
The support member includes a first hinge portion that supports the opening / closing cover so as to be rotatable in the vertical direction, and a second hinge portion that supports the first hinge portion so as to be rotatable in the vertical direction. An image forming apparatus. The image forming apparatus according to claim 2.
An image forming apparatus, wherein one end side of the opening / closing cover supported by the first hinge portion is substantially parallel to a paper transport direction. The image forming apparatus according to claim 2.
An image forming apparatus, wherein one end side of the opening / closing cover supported by the first hinge portion is substantially perpendicular to the sheet conveyance direction. The image forming apparatus according to claim 2, 3 or 4,
An image forming apparatus, comprising: a spring member that biases the opening / closing cover with respect to the first hinge portion so as to eliminate a folding angle. The image forming apparatus according to claim 5.
An image forming apparatus, characterized in that a guide member is provided on the unit main body side to contact the opening / closing cover when the opening / closing cover is opened at a predetermined angle to guide the opening / closing cover substantially in parallel. The image forming apparatus according to any one of claims 1 to 6 ,
An image forming apparatus characterized in that a jam processing space from the front side to the back side of the apparatus main body is formed by opening the opening / closing cover . The image forming apparatus according to claim 1 ,
2. The image forming apparatus according to claim 1, wherein a front side of the apparatus main body is open on the inner space, and a direction in which a sheet is taken out from the other member and a direction in which the jam processing is performed are both from the front side of the apparatus main body to the back side .

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