JPS61145072A - Sheet loading device - Google Patents

Abstract

PURPOSE:To make a sheet loading system multi-functional and compact, by installing a sheet feeding devices to feed sheets into bin trays of the sheet loading system, and a carrier device to introduce sheets fed by a feeder, to a conveying route to the copying machine. CONSTITUTION:At the sheet loading system 60, are installed sheet feeders 1511-151n to feed sheets stored in bin trays 611-61n towards at least one of the bin trays 611-61n, as well as a sheet carrier 117 to introduce the fed sheet through the feeders 1511-151n into the conveying route to the copying machine 50. As well as sheets are sorted and stored to each bin trays 611-61n according to specific patterns, the sheets copied on one side at the copier 50 are loaded in the bin trays 611-61n, then refed through the feeders 1511-151n, and carried to the copier 50 to copy on the other side, as one of the muti- functional operation.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a sheet stacking device equipped with a sheet sorting section capable of sorting and collecting sheets such as transfer paper, and more specifically, the present invention relates to a sheet stacking device equipped with a sheet sorting section capable of sorting and stacking sheets such as transfer paper. Used with a forming device, it enables multi-functions such as sorting and collecting sheets with images formed on them, forming images on both sides of the sheet, and even forming multiple images on one side of the sheet.
The present invention also relates to a sheet stacking device capable of forming images by feeding sheets stacked on a pin tray of a sheet sorting section to an image forming device.

(Conventional technology) Recently, image forming devices such as copying machines (hereinafter referred to as copying machines) have a sheet sorting function for sorting and collecting copied sheets, a duplex function for forming images on both sides of the sheet, and a duplex function for forming images on one side of the sheet. There is a demand for multifunctionality such as multiple functions for multiple copying, as well as systemization. Conventionally, these multifunctions have been built into the main body of the copying machine in advance, or separate from the main body of the copying machine, such as a sorting device, duplex device, etc. It is attached to support multi-functionality.

For example, as shown in FIG. 3, a copying apparatus 1 includes a document table 2 that can slide back and forth with a document M placed thereon, a lens system LE fixed to a support member S of the apparatus main body, and a large number of It has two cassettes C1 and C2 on which sheets can be placed and which can be attached to and removed from the main body of the apparatus, and further includes a cylindrical photoreceptor 3 having a central axis extending perpendicular to the sheet surface, and a cassette near the periphery thereof. The arranged developing device 5, cleaner 6, and charger 7 are integrally arranged on a frame 9, and these photoreceptor 3, developing device 5, cleaner 6, and charger 7 can be inserted into and removed from the main body support member S. It constitutes a flexible unit 1°.

Further, a conveyance device 13 having a transfer charger 11, a separation roller 12, etc. is disposed below the unit 10, and the conveyance device 13 is provided with cassettes C1, C, and a paper feeder for feeding the sheets on the top. A fixing device 17 is provided with rollers 15 and registration rollers 16, and to which the transferred sheet is fed from the conveyance device 13. A flapper 19 for changing the sheet feeding direction is disposed at the exit portion of the fixing device 17, and the flapper 19 moves the sheet to the main body of the photographic apparatus.
The sheets are selected and fed to a conveyor belt 23 that leads to a sheet sorting device 20 separate from the sheet sorting device 20 or to an intermediate tray 22 disposed within the main body 1 of the device. The sheet sorting device 20 has a large number of sheet storage pin trays 25 . . . These trays 25 can be transported up and down by a conveyor 26 , and sheets are ejected and stored in a predetermined tray 25 by a paper feed roller 27 . It is accumulated. On the other hand, the intermediate tray 22 is located at the lower part of the apparatus main body 1.
The intermediate tray 22 is installed at an angle to ensure sheet stacking and refeeding properties, and a feeding roller 29 and a delivery roller 30 are also provided to eject the sheets from the intermediate tray 22.

Based on the above configuration, when the document table 2 moves, the document table 2
The original M placed thereon is irradiated by a light source, and the reflected light passes through the lens system LEe and forms an image on the surface of the photoreceptor 3, which has been uniformly charged by the charger 7, to form an electrostatic latent image. Then, based on the rotation of the photoreceptor 3 in the direction of the arrow, the electrostatic latent image forms a toner image in the developing mold 5 . On the other hand, the sheets loaded in the cassette C1 or C2 are fed to the paper feed roller 1.
5, and is aligned with the toner image on the surface of the photoreceptor by a registration roller 16, and is further charged with a transfer charge M.
The toner image is transferred onto the sheet surface at 11 locations. Furthermore,
The sheet carrying the toner image is separated from the photoreceptor 3 by a separation roller 12, sent to a fixing device 17 by a conveying device 13, and fixed therein. In the case of single-sided copying, the flapper 19 is switched to the sheet sorting device side, and the copied sheet is ejected to a predetermined tray 25 by the paper feed roller 27, and the tray 25 is transferred to the conveyor 2.
The sorting specified in advance by 6 is moved according to the method, and the sheets are sorted in a predetermined pattern.

On the other hand, in the case of double-sided copying, the flapper 19 is switched to the intermediate tray side. Therefore, the sheets copied on one side are guided to the intermediate tray 22 by the conveyor belt 23, and a predetermined number of sheets are stacked and accumulated on the tray 22. When the single-sided copying is completed, the sheet on the intermediate tray 22 is fed by the feed roller 29 from the rear end surface of the sheet, that is, switched back, and then exposed to light by the feed roller 3o with the uncopied side facing upward. The sheets are copied onto both sides of the body 3 and the transfer charger 11, and are sent to the sheet sorting device 2o by the flapper 19 via the fixing device 17 in the same manner as described above, and are sorted by the sorting device 20 in a predetermined pattern.

Further, as another example of the conventional copying apparatus 1', there is one shown in FIG. Like the copying apparatus 1, the copying apparatus 1' also includes a document table 2, a cassette C1°C2, a lens system LE, a photoreceptor 3, a developing device 5, a cleaner 6, and a charger 7.
Unit 10 consisting of Further, a conveying device 13 and a fixing device 1
It has a rank of 7. And route 31 from fixing N17
a reversing guide path 3 having a paper feed roller 34;
2 is provided, and is further switched by a flapper 33 to the reversing guide lot 32 and a path 35 to the sheet sorting device 20'. Furthermore, the flapper 3 is
A path 37 is provided which is guided through a sheet 6, and the path 37 is guided to the intermediate tray 22' according to the sheet size by a number of discharge ports 37a... On the other hand, the sheet sorting device 20' is constructed separately from the main body of the copying apparatus 1', and is fixed to the main body of the apparatus with screws or the like. Further, the sorting device 20' has a large number of trays 25' fixed thereto, and is further placed in a position corresponding to the trays 25' on a path 4o communicating from the discharge roller 39 of the device main body 1'. flapper 41... and paper feed roller 42...
・is provided.

Based on the above configuration, the sheet transferred by the photoreceptor 3 and fixed by the fixing device 17 is guided to the path 31. In the case of single-sided copying, the flapper 33 is switched to the path 35 side, and the sheet is sent from the discharge roller 39 to the sheet sorting and mounting 20'. Then, depending on the predetermined sorting method, the sheets are collected in a predetermined tray 25' by the flapper 41 of the sorting attachment 20' and the paper feed roller 42. On the other hand, in the case of double-sided copying, the flapper 33 is switched to the reversing guide path 32 side to guide the single-sided copied sheet sent from the path 31 to the guide path 32, and then the sheet is switched back by reversing the paper feed roller 34. do. And flapper 36
Accordingly, the reversed sheet passes through the path 37 and is transferred to the intermediate tray 22.
A predetermined number of single-sided copy sheets are dropped onto the tray 22'. Further, the sheet on the intermediate tray 22' is sent to the photoreceptor 3 portion with the non-copied side facing up by the feeding roller 29 and the sending roller 30, and is transferred to the upper surface of the sheet at this portion. The sheets that have been double-sided copied are then sent to the sheet sorting device 20' and sorted into each tray 25'.

(C) Problems to be Solved by the Invention Therefore, the main body of the copying machine 1 (or a special double-sided copying machine) requires special intermediate trays 22, 22', and furthermore, the intermediate tray 22 is used to ensure sheet loading performance. Therefore, it is necessary to install the duplex copying device at an angle, or to install a reversing mechanism such as the reversing guide path 32 outside the intermediate tray. Therefore, the entire unit including the sheet sorting devices 20, 20' becomes a fairly large device. Furthermore, as shown in FIGS. 3 and 4, when a double-sided copying device is incorporated into the main body of the copying device 1, it is necessary to have a fairly robust structure in terms of strength as the main body of the device becomes larger. This also causes an increase in weight.

Furthermore, when troubleshooting problems such as paper jams, the main body of the copying machine, the double-sided copying part, the sheet sorting device, and the sheet conveyance path are long and complicated, so paper jams occur over a wide range of locations, and It takes time to find the paper jam, and because the intermediate tray and conveyance part of the duplex copying device are built inside the device, the paper jam location cannot be seen from the outside, and work such as opening the cover is required. This makes troubleshooting extremely troublesome.

Furthermore, as shown in the above-mentioned conventional example, the intermediate trays 22, 22' are generally installed in the lower part of the device, that is, near the floor surface, and the user must bend down to clear paper jams, making it extremely inconvenient to use. It's getting worse.

Also, sheets with single-sided copies are loaded on the intermediate trays 22 and 22', but these sheets often curl due to the pressure and heat received during the fixing process, and the curled sheets are removed from the intermediate trays. When refeeding, feeding errors such as double feeding are likely to occur, which, together with the increasing size and complexity of the copying apparatus, is a factor that reduces the reliability of the entire apparatus.

Additionally, in addition to the multi-functionality and systemization of copying machines mentioned above, there has recently been a trend toward personalization, but copying machines that have achieved this personalization are limited by the limitations of their size, weight, price, etc. They are not equipped with many functions; for example, even paper feeding devices are generally equipped with a single paper feeding device or devices that only have a manual feed function. Therefore, in such personal copying machines, mini-sorters, optical cassettes, document feeders, etc. are added according to the user's requests, but these mini-sorters and other devices only have individual functions. does not have
If these devices are installed one after another in the main body of the device, even though the main body is small and low-priced, the unit device as a whole becomes quite large and expensive, and the advantages of a personal device cannot be utilized. It has become.

In addition, with the multi-functionality and systemization of copying devices, operations such as editing and bookbinding are performed on copying devices equipped with sheet sorting functions and double-sided copying capabilities. It is often necessary to copy sheets by hand or by hand. Therefore, some copying machines have a built-in interrupt function, and some copying machines have a manual feed mechanism in the paper feed section, but if you want to interrupt the copying machine during editing, bookbinding, etc., you need to Copies can only be made using sheets of the copy size set in the copying device, and copies cannot be made if the magnification, copy size, or type of sheet is different, which is very inconvenient. Note that copying machines equipped with multiple paper feed devices or manual feed mechanisms can handle different magnifications, copy sizes, sheet types, etc.; however, copying machines equipped with such functions are large and The copying apparatus is expensive, and the number of users who can use the copying apparatus is limited. In addition, in a copying machine that does not have such a function, when interrupting the copying process, it is necessary to replace the set sheet or repeat manual feeding for the required number of sheets, which is a complicated task.

Further, when the copying apparatus is actually used, the type and number of sheets may be managed, for example, for each department. In this case, if there are only a few departments in use, it is sufficient to place paper feed cassettes dedicated to each department in parallel in the copying machine in advance, but if there are many departments in use and the types of sheets used are many, it is possible to It has become impossible to arrange two paper feed cassettes side by side in advance in a copying machine. Therefore, it is conceivable to configure the copying device so that multiple paper feed devices can be installed, but this would inevitably increase the size and weight of the device, complicate the mechanism, and increase the price, making it impractical. .

(d) Means for Solving the Problems The present invention aims to solve the above-mentioned problems, and includes a sheet sorting section having a large number of sheet storage pin trays, which sorts sheets into each of these pin trays.・
In the sheet stacking device capable of stacking sheets, a sheet feeding means facing one of the pin trays and capable of feeding the sheets stacked on the pin tray is disposed, and
The present invention is characterized in that a sheet conveying means is provided for guiding the sheet fed by the sheet feeding means to a conveying path to a copying apparatus.

(f) Function Based on the above-mentioned configuration, the sheet sorting section sorts and stacks the sheets into each pin tray according to a predetermined pattern, and also stacks the sheets copied on one side by the copying device in the pin tray, and then sheets from the vagina pin tray. The sheet is fed again by the feeding means, and then fed again to the main body of the copying apparatus by the sheet conveying means to perform multi-functional processing such as double-sided copying. Further, the pin tray is used as a paper feeding device, and a sheet is fed from the pin tray by a sheet feeding means, and further fed to the main body of the copying apparatus by a sheet conveying means to make a new copy.

(F) Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the copying apparatus 50 includes a document table 2, a light source L lens system LE, and two cassettes C□.

C, and a cylindrical photoreceptor 3 is disposed within the apparatus main body. Further, near the periphery of the photoreceptor 3, there are two developing devices 5, 5' each containing toner of a different color.
, a cleaner 6, a primary charger N7, a transfer charger 11 and a separation roller 12 installed at the tip of the conveyance device 13. Also, cassettes C,,C2
Paper feed rollers 15 and 15 are disposed in the section, and are guided to a pair of registration rollers 16 through paths 51 and 52, respectively, and are also guided through a path 55 from a guide port 53 opened on the lower surface of the apparatus main body 50. and is guided to a pair of registration rollers 16. Further, a fixing device 17 is disposed at the rear end portion of the conveying device 13, and a pair of discharge rollers 56 are disposed in the fixing device 17 for discharging the sheet to the outside of the machine. A sensor S is installed to detect.

On the other hand, a sheet stacking device 60 consisting of a sheet sorting section 57 and a sheet conveying section 59 is arranged facing the copying machine 50. The sheet sorting section 57 has a large number of sheet storage pin trays 11 to 61. are installed, and upper and lower pulleys 115, 116 are rotatably arranged, and a belt 117 is wound around these pulleys 115, 116. Further, as shown in FIG. 2, around the belt 117 are conveyor rollers 119, 120, 121 . ~12
1 are arranged at a predetermined interval so as to be in elastic pressure contact with the belt and follow the rotation, and a guide plate 122 is arranged between these rollers to guide the sheet conveyance gIs12.
3. Furthermore, a path 125 for receiving sheets from the pair of discharge rollers 56 of the copying apparatus main body 50 extends so as to communicate with the transport path 123, and facing the transport path 123, each tray 611-61. ．． A large number of flappers 1261 to 12 capable of selecting and branching sheets in the direction
6. , are the respective conveyance rollers 1211 to 121. It is rotatably supported on the spindle of. Note that each flapper 126 has a spring that restricts the sheet from entering in the direction of the tray and guides the sheet to a direction 9123 along the belt 117 as shown in the solid line.
By energizing the solenoid 131, it is switched to the chain line position leading to the tray path 132. In addition, each tray 611 to 61
o has a light emitting element 133a and a light receiving element 133b, respectively.
A sheet detection sensor 133 consisting of the following is installed. Arms 1501 to 150o are rotatably supported on the spindles of the respective conveyance rollers 121□ to 121n, and feeding rollers 1511 to 151o are disposed at the tips of the arms. A clockwise biasing force is applied by the coil spring to bias the feeding roller to a position away from the tray. Note that these feeding rollers 151 and 151° are respectively conveying rollers 1
211-121o and the conveyor rollers 1211-121.
, the sheet on the tray is conveyed through the conveying path 123 in synchronization with the rotation of the
It can be rotated in the direction in which it is sent out. On the other hand, each tray 61. ~6
1. ．． has auxiliary plates 153... whose bottom surfaces are rotatably supported by pins 152, and further below these auxiliary plates 153 are backup links 155I to 155.
n is rotatably supported by support shafts 156... One end arm of the backup links 1551 to 155 and the feeding roller support arm 1501 to 15
0o are connected via links 157□ to 157, respectively, and when the arm 150 is rotated downward (counterclockwise), the backup link 155 is rotated upward (clockwise).
It rotates in conjunction with.

Additionally, each backup link 155 . ~1551. Each arm has a solenoid 159□ to 159 at one end.
are connected to each other, and feeding rollers 1511 to 151 . and the auxiliary plate 153 to the feeding position (
FIG. 2 bottom tray 61. , see section).

Further, a drive source such as a motor is directly connected to the shaft to which the lower pulley 116 is fixed, and this drive source also serves as a drive source for the sheet conveying section 59 at the same time. The sheet conveyance section 59 has a conveyance path 141 that is aligned with a discharge path 144 extending from a conveyance path 123, and the path 141 includes a large number of conveyance rollers driven by a gear train, a chain, etc. from a drive source. vs. 142. 1424 and guide plates 1431 to 1434 therebetween.

Note that among these pairs of conveyance rollers, the intermediate conveyance roller pair 1
423 and 1424 are so-called oblique rollers, which control the position of the sheet in the direction perpendicular to the conveying direction of the sheet.
The final transport roller pair 1424 is configured to be corrected with respect to a reference, and the final conveyance roller pair 1424 is connected to the guide port 53 of the copying apparatus main body 50.
It is consistent with Further, a third cassette C3 can be attached to the other end of the sheet conveying section 59, and a third cassette C3 is connected to the path 145 by the sheet feeding roller 15'.
from there to a final conveyance roller pair 1425.

Next, the operation of this embodiment will be explained.

First, a case will be described in which m pages of a document are copied onto both sides of a sheet to produce n copies of a double-sided copy sheet.

The operator issues an instruction to make double-sided copies of the number n of sheets, and the copying machine 5
When the start switch 0 is activated, the first page of the document placed on the document table 2 is copied by the apparatus main body 50 and introduced from the ejection roller pair 56 into the path 125 of the sheet stacking device 60 . At this time, when the passage of the leading edge of the sheet is detected by the sheet detection sensor S located near the ejection roller pair 56 in the fixing device 17, the sensor signal is input to the microprocessor unit (hereinafter abbreviated as MPU), and the sensor signal is input from the MPU. A signal to excite the solenoid of the first stage flapper 1261 is output, and the flapper 1261 is moved to the tray side path 1.
It is switched and held at the position indicated by the chain line in FIG. 2, which communicates with the 321 side. Therefore, the first sheet is conveyed by the belt 117 and conveyance rollers 19, 120, and is further guided by the first stage flapper 126□, passes through the tray path 1321, and is discharged onto the first stage tray 61. . Next, when the second sheet is detected by the detection sensor S, the first stage flapper 1351 moves to the tray side diameter @1132. At the same time, the second stage flapper 1352 is switched and held at the position where it communicates with the tray side path 1322. As a result, the second sheet is ejected to the second tray 61 in the same way as the first sheet.

Similarly, the third sheet is ejected to the third tray 613, and then the nth sheet!・is the nth tray 6
1. is being discharged.

Next, when the second page of the original is placed on the original platen 2 and the copying operation is started, all flappers 126 to 12 are
6 is returned to the solid line position in FIG. 2 that guides the sheet to the conveyance path 123 (actually, each flapper is returned in sequence, so the nth stage flapper 126. is returned), and then the first stage solenoid 159 □ is returned. Powered Backup Link 15
5. is rotated clockwise to lift up the auxiliary plate 153, and at the same time, the arm 150□ is rotated counterclockwise via the link 157 to move the feeding roller 1511 to the tray 61. It touches the sheet above. Accordingly, the sheet is sent out to the conveyance section 11!1123 by the rotation of the feed roller 151□, further guided to the sheet conveyance section 59 through the conveyance path 144, and then further conveyed by the conveyance roller pair 142.of the conveyance section 59. ~142□ leads to the guide port 53 of the copying apparatus main body 50.

Then, the second page of the original is copied onto the uncopied side by the copying apparatus main body 50, and the double-sided copied sheet is sent from the discharge roller pair 56 to the sheet stacking device 60. At this time, the sheet detection sensors 133a and 133b
When detecting that a sheet has been ejected from the first tray 61, the solenoid 159. is de-energized and the feed roller 151 is located above and the auxiliary plate 153
is returned to the normal position located below, and the first stage flapper 126 is held so as to guide it to the tray side path 132 based on the sheet passage detection by the detection sensor S0. Therefore, the double-sided copy sheet is transferred to the flapper 126.
1 and is discharged onto the first tray 61□.

Similarly, the 2 sheets stored on the second tray 61□
The uncopied side of the second sheet is copied, and the second double-sided sheet is discharged and stacked on the second tray 61°. Similarly, the nth double-sided sheet is placed in the nth tray 61. , discharged and loaded on top. Thereafter, copying from the 3rd page to the mth page is performed repeatedly in the same way as the double-sided copying of the 1st and 2nd pages, and finally n copies of the double-sided copy sheet of page m are placed in each tray 611. ~61
．． ．． All copying operations are completed.

Next, a case of performing multiple copying in which multiple images are overlapped and copied on one side of a sheet will be described.

As in the case of double-sided copying, first, a sheet with the first original copied on one side is discharged and collected onto the first tray 611. Then, when the second document is placed on the document table 2 and the start switch is activated to make multiple copies, the first stage flapper 1261 is switched to the position indicated by the chain line in FIG. 2, and the first stage solenoid 159 is excited, and the first tray 6
1. while lifting the auxiliary plate 153 of the feed roller 151.
1 and thus the tray 61. The upper sheet is fed to the transport path 123. Also, at the same time as the start switch is activated, the nth stage flapper 126. transfers the sheet to tray path 1
32. , so that the transport path 12
The sheets conveyed by the belt 117 are discharged and collected onto the tray 61° by the n-th stage flapper 126o. Then, when the sheet detection sensor 133 detects that the sheet has been accumulated on the n-th tray 61n,
nth stage solenoid 159. (not shown) is excited, the auxiliary plate 153 is lifted by the backup link 155o, and the arm 150. , lowers and feeds the feed roller 151o to the tray 61. For details, see auxiliary board 153
It makes contact with the upper sheet and sends the sheet to the conveyance path 123, whereby the sheet is reversed once and the sheet is conveyed from the path 144 with the copy side facing down and the trailing edge becoming the leading edge (switchback). It is sent out to the conveyance path 141 of the section 59. Each conveying roller 14 of the sheet conveying section 59
2 to 142, the single-sided copy sheet is transferred to the copying machine main body 50.
The second document is guided to the guide port 53 of the apparatus body 50, and the second document is superimposed on the surface being copied in the apparatus main body 50 and is copied. Furthermore,
Similar to double-sided copying, the multiple-copied sheets are discharged and stacked on the first tray 61□.

In the above description, the first (top) tray 61□ and the nth (i & upper and lower trays) were used for multiple copying, but it goes without saying that other trays may be used.

Next, a case will be described in which unused sheets are fed from the pin trays 1 to 61 to the copying apparatus 50 and the pin tray is used as a paper feeding device.

The operator loads unused sheets on the pin tray roll 1 predetermined by each department, for example, the bottom pin tray roll 1r, gives an instruction for single-sided copying using the sheet from the pin tray, and operates the copying machine 50. Activate the start switch. Then, the flapper 126o moves the sheet to the transport path 1.
23, and then the nth stage solenoid 159 is energized and the backup link 15 is
5. is rotated clockwise to lift up the auxiliary plate 153, and at the same time, the link 157. , via arm 150. , counterclockwise to feed roller 151. , to the tray 61.
, abuts against the upper sheet. In this state, the feeding roller 15
1. .

When rotated, Pintreiro 1. , the upper sheet is fed in the direction of the conveyance roller 121o, and further the sheet is fed in the direction of the conveyance roller 121o.
, is sent out to the conveyance path 123 by the rotation of . Then, the sheet is sent to the conveyance i$144 by the belt 117 and guided to the sheet conveyance section 594ζ, and then conveyed to the copying machine main body 5 by the conveyance roller pairs 1421 to 1424 of the conveyance section 59.
0 is guided to the guide port 53.

Then, the original placed on the original platen 2 is copied by the copying apparatus main body 50 and introduced into the path 125 of the sheet stacking device 60 from the discharge roller pair 56 .

At this time, when the passage of the leading edge of the sheet is detected by the sheet detection sensor S0 located near the discharge roller pair 56, the sensor signal is input to the MPU, and the MPU sends a signal that excites the solenoid of the first stage flapper 1261. is output, and the flapper 126 is switched and held at the position indicated by the chain line in FIG. 2, which communicates with the tray side path 1321 side. Therefore, the copied sheet is transferred to the belt 117 and the conveyor rollers 119, 1.
20, and is further guided by the first stage flapper 1261 to the tray H@132. It is discharged and collected on the first stage tray 61°. Note that, if necessary, the single-sided copy sheets can be sorted into pin trays 1 to 61n-3 according to a predetermined pattern based on the sheet sorting function of the sheet sorting section 57 described above. Furthermore, in the above explanation, unused sheets are placed in the bottom pin tray roll 1. However, it is not limited to Pintreiro 1n, and Pintreiro 1□ to 61. , can be arbitrarily selected and stacked on a maximum of n-1 pin trays. At this time, the copied sheets are discharged and collected on a pin tray on which unused sheets are not stacked. Also, Pintreiro 11-61. It is also possible to feed paper from a cassette by disposing a cassette holding member in a portion of the .

(G) As described in detail, according to the present invention, the sheet classification section 57
At least one of the seat storage pins of 1□~61°
Sheet feeding means 1511 to 151o that can feed the sheets stacked on the pin tray are arranged facing each other, and the sheet feeding means 151□ to 151o guide the sheets fed by the sheet feeding means 151□ to 151o. Since the means 117 is provided, although it has multiple functions such as a double-sided copying function and/or multiple copying function in addition to a sheet sorting function, it does not require an intermediate tray and a reversing path, etc., which were conventionally required. Furthermore, together with the ability to reduce the dead space caused by these intermediate trays and the reversing path, it is possible to achieve significant miniaturization, simplify the structure, reduce weight, and reduce cost. can be manufactured. In addition, since the sheet sorting function, double-sided copying function, and multiple copying function can be used in common with Pintrayro 11 to 61, the flow of sheets can be easily confirmed from the outside, and sheet jams, etc. Trouble handling operations can be made almost the same for each function, and the processing operations themselves can be simplified, improving usability.

Furthermore, Pintreiro 1, ~61. ．． Since sheets are fed by the sheet stacking device 60 having a The reliability of the unit itself can be improved, and the usability can be further improved.

Furthermore, it can be easily added to a personal type copying machine, and a single sheet stacking device 60 according to the present invention can be provided with multiple functions, making it multifunctional while taking advantage of the advantages of a personal machine. It is also possible to aim for

In particular, each pin tray 1□ to 6 of the sheet stacking device 60
By using the 1n as a paper feeder, you can easily copy sheets with different magnifications, copy sizes, sheet types, etc. even while editing or binding on a copying machine. Since n -1 pin trays can be used as paper feeding devices, sheet management can be performed extremely easily even when the sheets are divided into different departments or when a large number of types of sheets are used.

[Brief explanation of the drawing]

1 and 2 are diagrams showing an embodiment according to the present invention, in which FIG. 1 is an overall front view, and FIG. 2 is a front view showing a sheet sorting section of a sheet stacking device. 3 and 4 are overall front views showing different conventional examples, respectively. 50... Copying device, 57... Sheet classification section, 5
9...Sheet transport unit, 60...Sheet stacking device, 61. ~61. ．． ... Sheet storage bin) - Ray, 117 - Sheet conveyance means, 126□~
126rl... flapper, 151~151,,
...Sheet feeding means

Claims (1)

[Claims] (1) In a sheet stacking device that includes a sheet sorting section having a large number of sheet storage pin trays and is capable of sorting and stacking sheets on each of these pin trays, the sheet stacking device faces at least one of the pin trays and the sheets are stacked on the pin tray. A sheet stacker comprising a sheet feeding means capable of feeding sheets, and a sheet transporting means for guiding the sheets fed by the sheet feeding means to a transport path to a copying device. Device.