JP2905487B2 - Paper ejection device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet discharging device that discharges a sheet on which an image has been formed, out of the apparatus.

[Conventional technology]

Generally, in a copying machine, when a paper jam occurs after copying in a paper output section, first, an outer cover is first opened, an inner handle, a lever, and the like are operated, and the paper is formed by a guide plate or the like. The transport path is opened on the paper transport surface, and the jammed paper is removed.

If paper jams in the fixing unit, pull out the fixing unit with its exterior cover open, or rotate the knob connected to the roller of the fixing unit to remove the jam paper. I have to.

[Problems to be solved by the invention]

However, when removing jammed paper by such a method, it is necessary to open the outer cover as described above and then operate the handle or lever, pull out the fixing unit, or rotate the knob. Therefore, the time required for the jam processing was long, and the work was troublesome because of the large number of steps.

In addition, there is a copier (clamshell structure) that can open the entire sheet conveying unit on one side of the sheet conveying surface when such a jam occurs,
In the case of such a copying machine, even if a jam occurs in a paper discharge unit other than the fixing device, for example, the entire paper transport unit must be opened. There is also a problem that the non-existing portion is moved, and in some cases, a problem such as a toner drop may occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and when a paper sheet is jammed in a fixing device and a paper discharge unit after passing through the fixing device, it is possible to easily perform the jam processing in a short time. Can be processed without moving unnecessary parts during the jam processing operation,
An object of the present invention is to facilitate maintenance.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a separating unit for separating a sheet from a fixing device having a fixing roller and a pressure roller, and a conveying unit including a pair of conveying rollers for conveying the sheet immediately after the separation. A conveyance path for guiding the paper conveyed by the conveyance means in the discharge direction by a pair of guide means, wherein the guide means can be opened and closed at the paper conveyance surface. The fixing device includes one of the pair of conveying rollers and one of the pair of guide units, and is rotatably supported by a support member and can be opened and closed with respect to a fixing roller and a pressure roller of a fixing device. A first sheet discharging unit which is located at a position where the separating means separates the sheet from the fixing device when closed, and formed separately from the first sheet discharging unit, and is rotated by the support member. Pivoted as possible A second discharge unit having the other of the pair of transport rollers and the other of the guide means, which is independently openable and closable independently of the second discharge unit; When the other of the guide means is opened so as to be separated from one of the guide means, the transport path is opened with its paper transport surface as a boundary and the transport rollers of the pair are separated from each other. It is.

Preferably, the support member is a main body, and both the first sheet discharging unit and the second sheet discharging unit can be opened and closed in the same direction.

Further, it is preferable that the first sheet discharging unit and the second sheet discharging unit are rotatably supported coaxially.

[Action]

According to the paper discharging device configured as described above, when a paper jam occurs in a portion of the separating device or a portion of the transporting device that transports the paper after passing through the separating device, the device is guided by the guiding device. If the paper transport surface is opened at the boundary, the transport path is separated at the paper transport surface, so that the jam processing operation can be easily performed in a short time.

In addition, if the first sheet discharging unit and the second sheet discharging unit are coaxially rotatably supported by the main body, when one of them is rotated, the other is simultaneously rotated. Operability is further improved.

〔Example〕

Hereinafter, a specific description will be given based on an embodiment of the present invention.

FIG. 1 is a front view showing a configuration of a paper discharge device of a copying machine showing an embodiment of the present invention, and FIG. 2 is an overall configuration diagram showing an entire copying machine equipped with the paper discharge device of FIG.

In this copying machine, as shown in FIG. 2, a main body side plate 58, which is a support member that opens and closes in a direction indicated by an arrow A about a support shaft 11 as a separate body from the fixing device 3, is provided with a conveyance path after the fixing device 3. Two first paper discharge units 5 that can be opened and closed at the paper transport surface
And the second sheet discharging unit 6 are rotatably supported coaxially at a fulcrum portion S.

In this copying machine, an image forming unit 10 integrated with a main body side plate 58 is supported by a support shaft 11 on a sheet transport unit 1 for transporting a sheet P, which is a transfer sheet fed from a sheet cassette 2 to a fixing device 3. 2, so as to be rotatable in the direction of arrow A in FIG.
An original circulating device 4 is mounted above the image forming unit 10.

In the open state shown in FIG. 2, the image forming unit 10 separates from the sheet conveying unit 1 at the sheet conveying surface, and when a jam occurs on the conveying path of the sheet conveying unit 1, the jam is generated. The paper can be easily taken out and maintenance processing can be easily performed.

The paper transport unit 1 and the image forming unit 10 are connected by a shock absorber 12 attached to the left side, so that when the image forming unit 10 is opened and closed, the impact is reduced.

The paper transport unit 1 is provided with a paper feed roller 13 that rotates in pressure contact with the upper surface of the uppermost paper in the paper feed cassette 2, a resist roller 14a on one side, a transfer unit 15, a fixing device 3, and the like.

The image forming unit 10 is provided with a photosensitive drum 17 rotatably in a direction indicated by an arrow at a substantially lower portion of the center thereof, around which a charging charger 18, a developing device 19, a cleaning device 21 and the like are disposed. The other registration roller 14b is provided at a position corresponding to the registration roller 14a on the sheet transport unit 1 side. Further, an exposure section 8 having a contact glass 22, an exposure lamp 23 and the like is provided above the image forming unit 10.

As shown in FIG. 3 in detail, the document circulation device 4
An upper device member 25 and a lower device member 26 are arranged vertically, and the lower right end of the lower device member 26 is rotatably supported on a fixing portion of the imaging unit 10 by a shaft 27 so as to be rotatable in the arrow B direction. Along with
The lower right end of the upper device member 25 is pivotally supported on the lower device member 26 by a shaft 28 so as to be rotatable in the direction of arrow C.

The upper device members 25 rotatably support the upper pinch rollers 29, 29 at intervals in the document transport direction (the left-right direction in FIG. 3), and are shown at positions corresponding to the respective upper pinch rollers 29, 29. Driving rollers 31, 31 which are respectively rotated in the direction of arrow E by a driving source not provided are rotatably provided on the lower device member 26.

Also, the lower part of each drive roller 31, 31 is connected to the imaging unit 1
Each lower pinch roller 32 rotatably supported above the fixed part of 0,
32, the lower device member 26 shown in FIG. 3 is compressed so as to come into contact with a predetermined pressing force suitable for conveying the document in a closed state.

In a state where the upper and lower device members 25 and 26 are both closed, a return conveyance path 33 having arcuate guide portions 33a and 33b capable of repeatedly circulating and conveying the document D is formed therebetween.

At the entrance of the arcuate guide portion 33b, a repeat claw 34 for switching the document D between circulating conveyance and discharge to the outside of the apparatus is provided rotatably in the direction of arrow F, and both of the lower device members 26 are provided. A document pressing plate 35 that slightly presses the upper surface of the document D conveyed over the contact glass 22 to provide a document flatness at the time of exposure is provided on the exposure unit 8 at an exposure position substantially intermediate between the driving rollers 31 and 31. ing.

Further, a left side of the lower device member 26 is projected to form a document table portion 26a, and a document insertion port 16 is formed between the lower device member 26 and the upper device member 25, and the upper device member 25 and the lower device member 26 are formed.
And a damper spring 38 between the lower device member 26 and the fixed portion of the imaging unit 10, respectively, so as to reduce the impact when the upper and lower device members 25, 26 are opened and closed. I have to.

On the other hand, on the image forming unit 10 side, a fixing device 3 (FIG. 2)
The paper P, which is the transfer paper on which the visible image is fixed by the above, is discharged to the upper discharge port 41 formed at the upper right side of the image forming unit 10 in order to discharge the paper P to the outside of the apparatus. The paper stacker 43 is rotatably supported by a support portion 43a.

And a contact glass provided at the exposure position
Drive roller 31 and lower pinch roller 32
When the discharge stacker 43 is rotated to the position indicated by the imaginary line in FIG. 3 which serves as a document table for inserting a document between them, a detecting means 44 which is a transmission type photo sensor, for example, detects the rotation. A light-shielding part formed at one end of the discharge stacker 43
It is fixed at the position corresponding to 43b.

An exposure lamp 23 is provided below the contact glass 22.
A rinse 48 (roof mirror lens array) is also provided.

In FIG. 3, reference numeral 45 denotes a document insertion detecting sensor which detects a document D inserted from a document insertion port 46 formed between the lower device member 26 and the upper surface of the image forming unit 10.

Reference numeral 47 denotes an upper stacker for stacking the leading end side of the sheet P discharged from the upper discharge port 41 when the discharge stacker 43 is at the position shown by the solid line in FIG.

Next, the peripheral portion of the fixing device 3 and the first and second discharge units
5 and 6 will be described in detail with reference to FIG. 1 and FIGS.

As shown in FIG. 1, the fixing device 3 is disposed at the most downstream side (right side) of the paper transport unit 1 of the paper transport unit 1 which does not move when the image forming unit 10 is opened (the state of FIG. 2).
A pressing roller 53 is pressed against a fixing roller 52, which is rotatably mounted in a direction indicated by an arrow M on a side plate (not shown) of the sheet transport unit 1 from below, with a predetermined pressure.

The pressure roller 53 has two surfaces parallel to both sides of a bearing 54 into which a shaft portion 53a is rotatably fitted, and the two surfaces are formed in bearing grooves of a support bracket 55 fixed to a side plate of the sheet transport unit 1. 55a so as to be movable in the direction of arrow H in FIG.

A pressure lever 56 is pivotally supported on the support bracket 55 by a pin 57 so as to be rotatable in a direction indicated by an arrow I in FIG. 3, and the pressure lever 56 is rotated counterclockwise by a spring (not shown). The upper surface of the lever is pressed against the lower portion of the shaft portion 53a of the pressure roller 53 by being biased to rotate.

Then, at the tip (right side) of the pressure lever 56, a fourth
As shown in the figure, a pressing portion 56a is formed, and a support plate 49 fixed to the bottom of the sheet transport unit 1 is indicated by an arrow A by a support shaft 11.
Main body side plate 58 (image forming unit)
At the position corresponding to the pressing portion 56a).
Pressing portion 56a when main body side plate 58 is rotated in the direction of arrow A1
, And a projection 61 that pushes down on it is fixed.

Further, the first and second sheet discharging units 5 and 6 correspond to the first
As shown in the figure, a pair of side plates 62 (only one side is shown) and a lower portion of the base 63 are both pivotally supported by a fulcrum S (see also FIG. 5) so as to be rotatable in the direction of arrow J. The first sheet discharging unit 5 having the separating claw 75 as a separating means is located at a position where the separating claw 75 separates the sheet from the fixing device 3 when it is closed as shown in FIG. As shown, it can be opened with respect to the main body side plate 58. The second sheet discharging unit 6 can also be opened with respect to the main body side plate 58 as shown in FIG.

As shown in FIG. 7, the fulcrum portion S is provided with a shaft 64 fixedly mounted in a hole 58a formed in a lower portion of the main body side plate 58 by projecting inward from both side plates 62 (only one side is shown). The moving shaft 67 supported by a bracket 65 fixed to a base 63 (FIG. 1) and a sub-bracket 66 is rotatably fitted and rotatably fitted.

The moving shaft 67 is always urged to protrude rightward in FIG. 7 by a spring 68 fitted in the small diameter portion, and the right end thereof is in contact with the left end surface of the shaft 64. Abut
Therefore, if the moving shaft 67 is moved to the left, it can be easily removed from the hole 58a.

As shown in FIG. 7, the first sheet discharging unit 5 connects the side plates 62 on both sides by stays 71 having sufficient rigidity, and as shown in FIG. 3, a driving roller 72 on the driving side, which is one of a pair of conveying rollers for conveying the sheet immediately after being separated from the fixing roller 52 by the fixing roller 52, is rotatably supported in the direction of the arrow. ing.

A transport roller 73 is also supported on the side plate 62 so as to be rotatable in the arrow direction.

Further, the first discharge unit 5 includes transport rollers 72, 7
An upper guide plate 74 which is one of a pair of guide means for guiding a sheet conveyed by 3 or the like in a discharge direction, and a stay 71
Of the fixing device 52 is rotatably supported by the fixing device 3 side, and when the first sheet discharging unit 5 is closed, the claw at the leading end is always separated by the spring force of the spring 76 onto the outer peripheral surface of the fixing roller 52. A separation claw 75 that contacts with a suitable predetermined contact pressure is provided.

Further, a safety switch 77 for detecting the open / closed state of the second sheet discharging unit 6 with respect to the first sheet discharging unit 5 is mounted inside the U-shaped portion of the stay 71, and a fixing plate 81 is provided on the upper surface of the stay 71. And a fixed shaft 79 that engages with a later-described rock lever 78 on the second sheet discharging unit 6 is fixed to the fixing plate 81.

As shown in FIG. 5, an engagement hole 82 is formed at an end of the side plate 62 of the first sheet discharging unit 5 on the fixing device 3 side, and when the first sheet discharging unit 5 is closed. (Fig. 6)
The main body side plate 58 is mounted in the engagement hole 82 and normally urged to the protruding side by a spring or the like (not shown).
The engaging pin 83 which comes in and comes out of contact with the sheet discharging unit 5 when the sheet discharging unit 5 is opened and closed is fitted so that the closed state can be maintained.

When the second sheet discharging unit 6 is closed as shown in FIG. 1 (FIG. 6), the second sheet discharging unit 6 comes into pressure contact with the transport rollers 72 and 73 on the first sheet discharging unit 5 side, and is rotated along with it. The driven rollers 84 and 85, which are the other of the pair of rollers that convey the sheet on which the visible image is fixed by the fixing device 3 to the outside of the apparatus, are rotatably provided, and correspond to the upper guide plate 74. In the meantime, a plurality of lower guide rods (even guide plates) which form the predetermined gap suitable for the predetermined paper conveyance and serve as the other of the pair of guide means forming the lower conveyance path 89 (FIG. 6). Good) 86 are provided.

Also, as shown in FIG. 6, a guide plate 87 that forms an upper transport path 92 between the upper guide plate 74 and the discharge port 41 side.
And a guide plate 88 forming a lower transport path 89 between the lower guide bar 86 and the discharge port 93 side below the lower guide rod 86. In the vicinity of the discharge port of the lower transport path 89, a transport roller 94 on the drive side for lower transport and a transport roller 95 on the driven side are provided rotatably in the direction of the arrow.

Further, the second paper ejection unit 6 is provided with the first paper ejection unit.
When the paper discharge unit 5 is closed, the discharge direction of the paper transported between the upper guide plate 74 and the lower guide rod 86 by the transport rollers 72 and 84 is changed to the upper transport path 92 or the lower transport path. A branch claw 96 that can be switched to any one of 89 is rotatably supported by a shaft 97.

The branch claw 96 engages one end of a switching lever 98 fixedly mounted on a shaft 97 with one end of a return spring 99 (see also FIG. 1) as shown in FIG. Is attached to the bracket 65. The other end of the switching lever 98 is fixed to a bracket 65 by a solenoid 10.
It is connected to the 0 movable shaft. The shaft 97 is rotatably supported at one end by a bracket 65 and at the other end by a bracket (not shown) through a bearing.

As shown in FIG. 6, the second paper discharging unit 6 has an outer cover 101 fixed integrally to the base 63 on the right side thereof, and a base surface 63a parallel to the outer cover 101.
Further, when the second sheet discharging unit 6 is closed, a pressing lever 102 for detecting the closed state by abutting against the detecting portion of the safety switch 77 and pushing it back is fixed.

Further, sensors (for example, a photo interrupter, a reflection type photo sensor, etc.) for detecting the jam of the paper to be discharged are disposed in the second paper discharge unit 6 at each part on the transport path.

That is, a sensor 103 for detecting a jam at the fixing exit portion and the separation claw 75 at a position close to the transport roller 84.
On the upper transport path to detect the jam after the branch claw 96.
A sensor 104 is provided at 92, and a sensor 105 is provided at the lower transport path 89, respectively.

Next, when the second sheet discharging unit 6 is closed,
The locking mechanism for locking the sheet discharging unit 5 will be described in detail with reference to FIGS.

The lock of the second sheet discharging unit 6 to the first sheet discharging unit 5 can be rotated in the direction of arrow K by a lever shaft 106 on the side of the second sheet discharging unit 6 as shown in FIG. The lock lever 78 supported on the first paper discharging unit 5 is
When the end face 78a abuts on 79, it is rotated from the position shown by the imaginary line to the position shown by the solid line, and the fixed shaft 79 is engaged in the lock groove 78b.

As shown in FIGS. 9 and 10, the lock lever 78 has a lever shaft 106 located upward and a spring receiving shaft 1 located downward.
08 are penetrated substantially to the center, are integrally fixed, and both ends of a lever shaft 106 are rotatably supported by a support bracket 107 fixedly screwed to the base 63, and springs 109, 109 are provided at both ends of a spring receiving shaft 108. Are respectively engaged, and the other ends are respectively engaged with spring receivers 107a, 107a formed on both sides of the support bracket 107.

When the second sheet discharging unit 6 is opened, the lock lever 78 moves from the position shown by the solid line in FIG.
It is rotated in the direction of arrow K1 by 79, and its rotation position is regulated by its back surface 78c abutting on a stop shaft 110 fixed to the support bracket 107 as shown by an imaginary line, and it is closed. Occasionally, the rear surface 78c contacts the bottom surface 107b of the support bracket 107 as shown in FIG.

Next, the operation of this embodiment configured as described above will be described.

First, when copying an original that is small and not thick and not cut and pasted, the discharge stacker 43 is set to the third position.
The document table is rotated to a position not used as a document table indicated by a solid line in FIG.

In this case, since the detection unit of the detection unit 44 is not shielded by the light shielding unit 43b of the sheet discharge stacker 43 and does not output a detection signal, the solenoid 100 (FIG. 7) is not driven. Accordingly, the branch claw 96 is at a position for guiding the sheet shown in FIG. 6 to the upper transport path 92 leading to the upper discharge port 41 by the urging force of the spring 99.

Next, the document D is transferred to the document table 26a of the document circulation device 4.
When the document is inserted into the document insertion slot 16 from the document feeder, the insertion of the document is detected by a sensor (not shown), and the driving roller 31 rotates in the direction of arrow E to move the document D into the arc-shaped guide portion of the return conveyance path 33.
The document D is conveyed to the exposure unit 8 while the conveyance direction is changed by 33a.
And a predetermined exposure is performed.

When the original D is copied only one time, the repeat claw 34 is at the position shown in FIG. 3 and is discharged as it is from the apparatus. Because it rotates in the direction, the arc-shaped guide part
The sheet is sent to 33b repeatedly and circulated and conveyed repeatedly. When the sheet is circulated by the number of times equal to the number of copies, the sheet is discharged out of the apparatus again by the repeat claw 34 switched to the position shown in FIG.

On the other hand, the paper P, which is a transfer paper, is fed from the paper feed cassette 2 in FIG.
Then, the visible image (toner image) on the photosensitive drum 17 is transferred, is fixed by the fixing device 3 and is separated from the fixing roller 52 by the separating claw 75 as shown in FIG. And is sent out between the lower guide rod 86.

Then, the paper P is discharged to the upper discharge port 41 through the branch claw 96 located at a position leading to the upper transport path 92, and is stacked on the discharge stacker 43.

Further, when copying a large-sized document having a long length in the transport direction or a thick or cut-and-pasted document, the discharge stacker 43 is set to the third position.
The document is rotated to a position which becomes a document table indicated by a virtual line in FIG.

In this way, the detection unit of the detection unit 44 is shielded by the light shielding unit 43b of the sheet discharge stacker 43 and outputs a detection signal. Therefore, the solenoid 100 is driven to move the branch claw 96 to the lower discharge port. The direction is switched to the direction leading to the lower transport path 89 leading to 93.

Next, when the original D is inserted from the upper surface of the discharge stacker 43 whose upper surface is on the original table on the same surface as the exposure position, the original is detected by the original insertion detecting sensor 45, and the driving roller 31 is moved. It rotates in the direction of arrow E and is conveyed by linear conveyance onto the contact glass 22 of the exposure unit 8, where exposure is performed in the same manner as described above.

Therefore, since the original is transported linearly without changing the transport direction, even if the original is thick or cut and pasted, it is transported without any trouble.

On the other hand, the paper P, which is a transfer paper, is fed from the paper feed cassette 2 in the same manner as described above, the visible image is fixed by the fixing device 3, and the branch is located at a position leading to the lower transport path 89. Since the paper is discharged to the lower discharge port 93 through the claw 96, if a paper storage unit large enough to stack large-sized paper is mounted in advance under the table on which the copying machine is placed, the Even if the paper discharged from the discharge port 93 is a large size, the paper is reliably stacked in the paper storage portion, so that it can be easily taken out after the stacking.

In this embodiment, when the discharge stacker 43 is rotated and used as a manual document table for manual feeding, the detection means 44 detects this and drives the solenoid 100 to drive the branch claw 9.
Since the sheet 6 is always switched to the direction in which the sheet is guided to the lower discharge port 93, the sheet is not discharged to the upper discharge port 41, so that the sheet does not interfere with the discharge stacker 43 at all.

Further, in the copying machine according to this embodiment, when a jam occurs in the separation claw 75, the image forming unit 10 (integral with the main body side plate 58).
The separation claw 75 is separated from the fixing roller 52 by simply opening the fixing roller 52, the pressing lever 56 is pushed down as shown in FIG. 4, and the pressing roller 53 is separated from the fixing roller 52 as shown by a solid line. The jam paper can be easily taken out without performing the operation.

Further, when a jam occurs after the trailing edge of the sheet hits the fixing device 3 and passes through the fixing device 3, similarly, the jam can be easily processed in a short time simply by opening the second sheet discharging unit 6. In this case, the imaging unit 10 does not need to be moved, so that there is no inconvenience such as toner falling.

Further, in this embodiment, during maintenance of the fixing device 3 and the separation claw 75, if the first sheet discharging unit 5 is opened,
The first and second discharge units 5 and 6 are the same fulcrum S (6th
2), the second sheet discharging unit 6 is opened at the same time, so that the operability is good.

Although the above embodiment has been described with reference to an example of a copying machine equipped with a document circulation type document transport device, the present invention can be similarly applied to a copy machine having no document transport device.

Further, in the above-described embodiment, the first and second discharge units 5,
6 are rotatably supported by two different shafts 64 and a moving shaft 67 disposed on the same axis (the fulcrum S in FIG. 6), and one of the first paper discharge units 5 is provided. Is opened, the second sheet discharging unit 5 is opened at the same time. However, it may be arranged such that the first and second sheet discharging units 5 and 6 are supported by a single shaft. The positions of the fulcrum portions S of the first and second sheet discharge units may be different from each other.

〔The invention's effect〕

As described above, according to the present invention, maintenance of the fixing device and the subsequent paper output unit can be easily performed, and when paper jams in the fixing device and the paper output unit thereof, Jamming can be easily performed in a short time. In addition, at this time, portions unnecessary for the jam processing operation are not moved, so that there is no inconvenience such as toner drop.

In addition, when the first and second paper discharge units are rotatably supported coaxially, it is possible to rotate only one of them to rotate the other paper discharge unit at the same time. Operability is further improved.

[Brief description of the drawings]

FIG. 1 is a front view showing the configuration of a paper discharge device of a copying machine showing one embodiment of the present invention, and FIG. 2 is a diagram showing the entire copying machine equipped with the paper discharge device of FIG. 1 separated by a paper transport unit. FIG. 3 is a schematic configuration diagram showing the vicinity of the document circulating device and the paper discharge stacker in FIG. 2; FIG. 4 is a schematic configuration diagram showing the vicinity of the discharge stacker; FIG. 5 is a front view similar to FIG. 1 showing a state in which the first sheet discharging unit 5 is opened, and FIG. 6 and FIG. 1, a front view similar to FIG. 1 showing a state in which the second sheet discharging units 5 and 6 are both closed, and a side view showing the structure as viewed from the right side thereof, and FIGS. FIG. 4 is a front view showing a locking mechanism for locking the paper unit 6 to the first paper discharging unit 5 in an engaged state. It is a front view and a left side view showing the side. DESCRIPTION OF SYMBOLS 1 ... Paper transport unit, 3 ... Fixing device 5 ... First discharge unit 6 ... Second discharge unit 10 ... Image forming unit 58 ... Body side plate, 64 ... Axis 67 ... Move Axis 72,73,84,85,94,95… Conveyance roller 74 …… Upper guide plate (guide means) 87,88… Guide plate 75 …… Separation claw (separation means), 89 …… Lower conveyance path 86 ...... Lower guide bar (guide means) 92 ... Upper transport path, 96 ... Branch claw D ... Original, P ... Paper

────────────────────────────────────────────────── ⁶ Continuation of the front page (51) Int.Cl. ⁶ identification code FI G03G 15/20 106 G03G 15/20 106 (56) References JP-A-62-31640 (JP, A) JP-A-61-183667 (JP, A) JP-A-62-187866 (JP, A) JP-A-63-212663 (JP, A) JP-A-62-295868 (JP, A) JP-A-1-92135 (JP, A) JP-A-61-279869 (JP, A) JP-A-61-2637 (JP, A) JP-A-62-146138 (JP, U) JP-A-60-167032 (JP, U) (58) Int.Cl. ⁶ , DB name) B65H 29/12-29/22 B65H 29/52 B65H 5/02 B65H 5/06 B65H 5/36-5/38 B65H 7/00-7/20 B65H 43/00- 43/08 G03G 15/00 518 G03G 15/00 526 G03G 15/00 530

Claims (3)

(57) [Claims] A separating unit configured to separate a sheet from a fixing device having a fixing roller and a pressure roller; a conveying unit including a pair of conveying rollers for conveying the sheet immediately after the separation; and a conveying unit configured to convey the sheet. And a conveying path for guiding the sheet to be discharged in a discharge direction by a pair of guide means, wherein the guide means can be opened and closed with the sheet conveying surface as a boundary. One of the paired guide means and one of the pair of guide means, rotatably supported by a support member, can be opened and closed with respect to a fixing roller and a pressure roller of the fixing device, and when closed, the A first sheet discharging unit at which a separating unit separates a sheet from the fixing device; and a first sheet discharging unit formed separately from the first sheet discharging unit and rotatably supported by the support member so as to be rotatable. With one output unit A second sheet discharging unit which can be independently opened and closed independently and has the other of the pair of conveying rollers and the other of the guide means; and the second sheet discharge unit is connected to the other of the guide means. Wherein when the sheet is opened so as to be separated from one of the guide means, the conveyance path is opened with its sheet conveyance surface as a boundary, and the pair of conveyance rollers are separated from each other. apparatus. 2. The sheet discharging apparatus according to claim 1, wherein said supporting member is a main body, and said first sheet discharging unit and said second sheet discharging unit can both be opened and closed in the same direction. 3. The sheet discharging apparatus according to claim 2, wherein said first sheet discharging unit and said second sheet discharging unit are rotatably supported coaxially.