JPS63101263A - Sheet work storage tray - Google Patents

Abstract

PURPOSE:To make a sheet work stowable in a tray irrespective of length and numbers of the sheet work as well to aim at preventing a jam from occurring, by installing a holding part, holding a tip of the sheet, in a storage space, while installing a sheet scrapping-out member in one side roller outer circumference of a pair of discharge rollers. CONSTITUTION:When a tip 7' of a chart 7 comes into a storage space 16, it is accurately guided into the storage space 16 after getting over a lot of charts housed therein, without heading for an open part 21, owing to action of a scraping-out member 26a even in case a large number of charts have been already housed in a storage tray 13. And the tip 7' is advanced forward by a rotating grip roller 28, getting into a holding part 20 between a first guide member 14 and this roller 28, and it is held. Next, when the tip 7' is reached to a lower end of the space 16, its advancement comes to a stop, but the rear end side of the chart 7 still remains delivered in succession by a discharge roller pair 24, thereby it comes to loop form, and it is promoted by rotation of a roller 26 having the scraping-out member 26a so that it is discharged to the outside of a device by the open part 21.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a sheet material storage tray, and more specifically, it is installed in a paper ejection section of an image forming apparatus such as a facsimile machine or a copying machine, and is ejected from the image forming apparatus. The present invention relates to a sheet material storage tray for storing image-formed sheets 1-.

(B) Prior Art In general, the sheet material storage tray installed in the type of image forming apparatus mentioned above is not built into the main body of the apparatus, but is attached so as to protrude outside the apparatus. FIG. 4 shows an example of a facunmill apparatus equipped with such a sheet material storage tray. The illustrated facsimile 'J device 1 has a document table 2.
An image reading and transmitting system that reads information from a document 3 that is being fed by an optical system 4 and transmits the engraved image information, and an image that is received from a recording paper roll 5 onto a thermal recording paper 7 fed out by a platen roller 6. It is equipped with an image receiving and recording system having a thermal head 8 for recording information. A document storage tray 9 is provided on the left side of the facsimile device 1 to store documents 3 that are sequentially sent out from the document table 2, and a document storage tray 9 is provided on the right side of the device main body 1 to store documents 3 sent out sequentially from the document table 2. A sheet material storage tray 11 is provided so as to protrude outward to store a record M17 on which an image has been formed and which has been cut by a cutter 10 into a predetermined length, for example, an A4 size length. Note that 12 is a power supply section including a power supply device and the like.

Incidentally, in recent years, there has been a strong demand for image forming apparatuses such as facsimile machines to be smaller and lighter in weight.
Because these trays protrude from both sides, no matter how small the main body of the device is, the actual installation space cannot be reduced much due to the protrusion of these trays. As a solution to this problem, it may be possible to put these trays together on one side of the device body and save space for the trays on one side.
If the trays are concentrated on one side of the apparatus body in this way, the drive systems for both original documents and recording paper will be concentrated on one side, which will worsen the space efficiency inside the apparatus body, complicate the drive system, and reduce reliability. This may not only lead to a decline in quality but also a significant increase in costs.

Further, in the conventional image forming apparatus as described above, sheets on which images have been formed are ejected from the apparatus with the recording surface facing up and are stacked in order.

Therefore, when creating a record of a multiple-page document, if you record sequentially from the first page of the document, the image-formed sheet that is ejected from the device should be placed with the first page face down on the tray or tray. The second and subsequent pages will be stacked on top of each other in order, and the sheets stacked in the tray will be in the reverse order of the original. Therefore, after the recording operation is completed, it is necessary to rearrange the image-formed sheets in order from the first page, a so-called page alignment operation, which is very time-consuming.

Furthermore, rolled paper such as thermal recording paper used for facsimiles etc. has a strong curling tendency, and it is difficult to store it in an orderly manner on a conventional linear tray surface. Recently, in line with the miniaturization of the main body of the apparatus, there has been a trend to reduce the outer diameter of the roll as much as possible without changing the length of the paper, and one way to do this is to make the diameter of the core as small as possible. As a result, curling has become more noticeable, and there has been a strong desire to develop a paper storage method that can accommodate this.

In order to solve these problems, the present applicant first invented and filed a sheet material storage tray as shown in FIG. 5 (Japanese Patent Application No. 134175/1982).

In FIG. 5, the sheet material storage tray 13 is provided near the bottom of the sheet discharge port of the facsimile main body 1, and as shown in detail in FIG. A first guide member 14 that abuts and guides the guide downward, and a second guide member 1 that faces the first guide member and forms a seat storage space 16.
It is composed of 5. This second guide member 15
is made of a plastic plate fixed to the stay 17 of the facsimile main body 1, and the lower end of the first guide member 14 is connected to the lower end of the second guide member by a pin 18. A click mechanism (not shown) is provided between the facsimile apparatus main body 1 and the first guide member 14 to lock the first guide member in the state shown by the solid line in FIG. The first guide member 14 is held in the closed position shown in the figure. However, when a large amount of recording paper 7 is stored in the sheet material storage tray 13 and the storage capacity is exceeded, the click mechanism that locks the first guide member 14 in the closed state is activated by the weight of the stored recording paper. The first guide member 14 is automatically released by the pin 18.
It rotates around , and is locked by the stay 17 of the main body 1 in the open position shown by the two-dot chain line. When the first guide member 14 is open as shown in FIG. 1 guide member and move. Further, when the length of the recording paper is short, or conversely when it is not long, it is preferable to use the first guide member 14 in an open state.

As shown in FIG. 8, the inner wall surface of the first guide member 14 is provided with a plurality of ribs 19, which reduce the contact resistance with the leading edge of the recording paper and smoothly move the leading edge of the recording paper into the storage tray 13. At the same time as being introduced into the storage space 16, when the first guide member 14 is locked in the closed position, the second
A V-shaped, narrowly closed gripping portion 20 for gripping the tip of the sheet material 7 fed downward is formed between the guide member 15 and the guide member 15 .

Furthermore, when the first guide member S member 14 is closed, the rear end of the recording paper 7, which has become a loop when the long sheet material is stored, is inverted at the upper end of the first guide member 14. An opening 21 is provided so that the liquid can be sufficiently discharged to the outside.

Since the sheet 1 to material storage tray that was applied for earlier is configured in this way, the thermal recording paper 7 that is fed out from the roll 6
is heated by the thermal head 8 according to the information, and the recording paper 7
Image information is recorded on the surface. Thereafter, as shown in FIG. 10, the recording paper 7 is conveyed by the rotation of the platen roller 6, passes through the retarder 10, and its leading end is inserted into the storage space 16.
The first guide member 14 forms an obtuse angle.

Then, the leading edge of the recording paper 7 is guided downward, and the leading edge 7'
is held in a wedge-like manner by the gripping portion 20 at the bottom of the storage space 16. In this state, print paper 7 continuously.
When the recording paper 7 is fed out, the recording paper 7 forms a loop through the opening 21 as shown in FIG. 1 As shown in FIG. 12, the recording paper 7 is thickly curled and hangs out of the facsimile machine 1.Then, the cutter 10 operates and cuts the rear end of the recording paper 7.
Then, the recording paper 7 that was hanging outside the machine is reversed in the direction of the arrow using its own weight and the rotational force of the cutter blade, and the paper 7 that was hanging down outside the machine is turned over in the direction of the arrow
With the Jf, 7/ held in the V-shaped grip part 20, the rear end hangs down to the outside of the machine, resulting in the state shown in FIG. 13. This series of operations repeats and the recording paper accumulates in the tray 13, so the sheets on which images have been formed are arranged in page order, eliminating the need for page alignment operations, and even sheets with curls can be gripped securely. Furthermore, since the tray is built into the main body of the image forming apparatus,
Very effective in saving space.

→ Problems to be Solved by the Invention By the way, in the above-mentioned sheet material storage tray, since the cutter is exposed, there is a possibility that the cut recording paper may enter the cutter without being turned over for some reason. However, this recording paper had the disadvantage of causing jams inside the machine. In addition, when there are many sheets of recording paper stored, when the leading edge of the ejected recording paper comes into contact with the stored recording paper, it does not go downwards, which is the storage space, but toward the open part. There is a risk of progressing to
There was a problem with storing multiple sheets of recording paper. Therefore, when storing short recording sheets that are difficult to turn over, or when storing a large number of recording sheets, it is necessary to open the first guide member and use an external storage device.

2) Means for Solving the Problems The present invention aims to solve the above-mentioned problems and at the same time solve the various problems mentioned above. a first guide member that leads to a seat; a second guide member that faces the first guide member and forms a seat storage space; and a seat at the upper end of the first guide member.

1 - Install a sheet material storage tray with an open part that allows the rear end to be reversed near the sheet ejection section of the image forming apparatus, and provide a pair of ejection rollers consisting of a paper ejection roller and a pinch roller on the sheet ejection section side. Along with this, there is a Sea!・
A gripping portion is provided for gripping the tip of the sheet, and a sheet scraping member is provided on the outer periphery of one of the pair of discharge rollers.

By employing the above-mentioned means, when the sheet discharged from the image forming apparatus is stored in the material storage tray, the image-formed sheet fed out from the pair of discharge rollers of the discharge section has its leading edge aligned with the first one. It comes into contact with the guide member and is guided downward into the Sea 1 storage space. After entering the seat storage space, the seat) is grabbed by the gripping section, and then
Although the front end of the sheet stops advancing, the rear end of the sheet continues to be ejected from the image forming apparatus, and this part forms a loop and is removed from the opening by the action of the scraping member as the roller rotates. It is expelled outside.

When the trailing edge of the sheet is ejected from the image forming apparatus, the sheet is forcibly reversed by the scraping member, and the trailing edge hangs down from the opening to the outside of the device. Because the sheet is gripped, there is no chance that the sheet will fall out of the device.

(F) Embodiments Hereinafter, embodiments embodying the present invention will be described with reference to the drawings. In the drawings, members and parts that are the same or equivalent to those of the conventional example are designated by the same reference numerals and explained.

As shown in FIG. 1a, the leading edge 7' of the record 8Jt7 discharged from the facsimile machine 1 is placed near the bottom of the sheet discharge section located behind the platen roller 6 and cutter 10 of the facsimile machine M1. a first guide member 14 that is in contact with the guide member 14 and guides it downward;
A sheet material storage tray 13 is provided, which is fixed to the main body of the apparatus for forming a sheet storage space 16 facing the sheet storage tray 1 and a second guide member 15 . These guide members are made of a member that can guide the recording paper into the storage space 16 while preventing the recording paper from moving, such as a plastic plate or one in which a large number of wires are arranged in the vertical direction. The first guide member 14 and the second guide member 15 are connected at their lower ends by a pin 18, and the first guide member 14 is connected by a pin 18 between the illustrated closed position and the almost horizontal open position. It is rotatable about 18, and can be locked in both positions by known fixing means such as a click mechanism. And the first guide member 1
4 is in the closed position, the angle formed between the ejected recording paper 7 and the guide member 14 becomes an obtuse angle because the recording paper contacts the guide member and is smoothly guided downward into the storage space 16. The arrangement of the first guide member is adjusted accordingly.

On the other hand, on the sheet ejecting section side of the facsimile machine 1, there is provided a pair of ejecting rollers 24 consisting of a ejecting roller 25 connected to a drive mechanism such as a motor (not shown), and a pinch roller 26 in contact with the ejecting roller 25. and discharges the sheet 7 onto the sheet material storage tray 13.Furthermore, on the outer periphery of the pinch roller 26, a plurality of needle-shaped or plate-shaped flexible scraping members 26a are arranged at predetermined intervals in the radial direction. Furthermore, a grip roller 28 is provided within the sheet storage space 16 and is movable in the left-right direction in the figure, which is driven by the paper ejection roller 25 via a belt 27. 2 guide member 15
is biased by a leaf spring 29 attached to the first guide member 14, and contacts the first guide member 14, thereby forming the grip portion 20.

The above-mentioned paper ejection roller 25 is a recording paper 7
It is desirable that the sheet be driven in synchronization with the discharge of the sheet, and furthermore, by adjusting the circumferential speed of the sheet discharge roller 25 to be the same as the circumferential speed of the roller 6, it is possible to prevent jams within the apparatus 1. Further, in order to prevent the recording paper from being pulled out and falling while the grip roller 28 is stopped, it is desirable to configure the grip roller 28 so that it does not rotate in the reverse direction. Therefore, the paper ejection roller 25
Instead of being driven by an independent drive source, it is also possible to connect the platen roller 5 and the paper ejection roller 25 via a belt, a one-way clutch, or the like. In this case, since the platen roller 6 normally rotates in the reverse direction after cutting the sheet, the discharge roller 25 rotates intermittently only in the direction of the arrow shown in the figure each time the sheet is conveyed.

When a long type of sheet material is stored above the first guide member 14 with the first guide member closed, the rear end of the looped recording paper 7 is inverted and directed outward. An opening part 21 is provided so that the water can be sufficiently discharged.
Further, at this time, a friction piece 30 is provided at the upper end of the first guide member 14 to prevent the sheet material from slipping up.

In addition, in such a sheet material storage tray 13,
The distance from the lower end of the storage recess rR16 where the leading edge 7' of the recording paper 7 is located to the position of the ejection roller pair 24 is shorter than the normal length of the recording paper used in the feeding direction, for example, the length of A4 size recording paper. With this configuration, a large number of recording papers can be reliably stored in the tray with the leading end of the recording paper 7 being held within the storage space and the trailing end hanging down outside the apparatus.

Since the present embodiment has the above-described configuration, when the recording paper 7 fed out from the roll and on which image information is recorded according to the information by the thermal head 8 is stored in the sheet material storage tray, the recording paper 7 is As shown in FIG. 1a, the sheet is conveyed by the rotation of the platen roller 6, passes through the cutter 10, and is delivered to the receipt material storage tray 13 by the discharge roller pair 24.
discharged inside. When the recording paper 7' reaches the position of the first guide member 14, the leading edge 7' of the recording paper 7' reaches the position of the first guide member 14.
4 at an obtuse angle, is guided downward, and enters into the storage space 16. At this time, even if a large number of recording papers are already stored in the storage tray 13, the leading edge 7' of the recording paper runs onto the many stored recording papers due to the action of the scraping member 26a, and the opening part 21 The user is reliably guided into the storage space 16 without heading to the storage space 16.

The leading end 7' of the recording paper 7 guided into the storage space 16 is advanced by the grip roller 28 which is driven and rotated as shown in FIG. It enters into the grip part 20 between the parts and is gripped. When the leading edge 7' of the recording paper reaches the lower end of the storage space 16, its advance stops; however, since the length of the recording paper is usually longer than the distance between the ejection roller pair 24 and the lower end of the storage space 16, The rear end side continues to be fed out by the pair of discharge rollers 24 to form a loop, and is assisted by the rotation of the pinch roller 26 having the scraping member 26a to form the open portion 21.
is discharged outside the device. At time B, the leading edge 7' of the recording paper is gripped by the grip roller 28 and the first guide member 14, and the recording paper 7 is subjected to gJ friction force by the friction piece 30 provided at the upper end of the first guide member 14. Because of this, the lower part of the loop does not slip up and can be easily attached to pinch roller 2.
With the rotation of 6, only the upper part of the loop is discharged.

When the thermal head 8 finishes recording on the recording paper 7, the recording paper 7 is cut by the rotation of the cutter 10.
The paper discharge roller 25 continues to rotate, and the rear end of the recording paper 7 is forcibly reversed and discharged out of the apparatus by the scraping member 26a as shown in FIG. 1C.

At this time as well, the recording paper 7 tends to fall due to its own weight, but the gripping of the leading edge 7' of the recording paper by the grip rollers 28 and the first guide member 14 and the resistance of the friction piece 30 prevent it from falling. Ru.

This series of operations is repeated until the recording paper is stored in the tray 13, and the leading edge of the new recording paper is placed in the grip flow 2.
It can be easily grasped by rotating 8. When a large number of stored recording sheets are to be taken out, they can be easily taken out by lifting the sheet curved portion upward.

Next, FIG. 2 shows the operation when a short length of recording paper is ejected in this embodiment. Even if the recording paper 7 discharged from the storage device 1 is short as shown in FIG. 2a, the leading edge 7'
is securely gripped by the grip rollers 28 and the first guide member 14, and due to the action of the friction piece 30, the elasticity of the recording paper 7 prevents it from being pulled out of the storage space 16, and finally, as shown in FIG. As shown, the rear end of the recording paper 7 is in the upper case 2.
It is stored supported by the lower end of 2. If the next recording paper is ejected in this state, if it is a long recording paper, it will be reversed and hanging down together with the previous short recording paper, and if it is a short recording paper, the next recording paper will be ejected. It should be stored in the same condition as the recording paper. Therefore, it is possible to sequentially align and store a large number of recording sheets regardless of their length.

Next, FIG. 3A%C shows an example in which the upper case 22 is modified so that the pinch roller 26 protrudes outward.

In Fig. 3a, the upper case 22 is bent once in the middle.
The frame in Figure 3 is bent twice. Further, in FIG. 3C, the area covered by the upper case 22 is reduced so that the pinch roller 26 protrudes. In this way, by configuring the pinch roller 26 to be exposed beyond the lower end of the upper case 22, it is possible to more reliably store a large number of short sheets.

Note that in the above embodiment, the pinch roller 26 is
Although the paper discharging roller 25 to be driven is disposed closer to the open portion 21 and the scraping member 26a is provided around it, it is also possible to arrange the driven paper ejection roller 25 closer to the open portion 21 and provide the scraping member around it. Furthermore, although the gripping portion 20 at the sheet leading end 7' is composed of the first guide member 14 and the grip roller 28, the lower end of the storage space 16 is closed in a V-shape as in the conventional example, and the closing portion is closed. It may also be used as a gripping portion at the tip end 7' of the sheet.

(G) As described in detail, according to the present invention, a first guide member with which the distal end of the ejection seam is brought into contact and guides it downward;
A sheet material storage comprising a second guide member that faces the first guide member and forms a sheet storage space, and an opening portion that allows the rear end of the sheet to be reversed at the upper end of the first guide member. A tray is installed near a sheet ejection section of the image forming apparatus, a pair of ejection rollers consisting of a paper ejection roller and a pinch roller is installed on the side of the sheet ejection section, and a gripping section for grasping the leading edge of the sheet is installed in the storage space. Since the sheet scraping member is provided on the outer periphery of one of the pair of discharge rollers to scrape out the sheet, the feeding direction of the discharged sheet is stabilized, and the leading end of the discharged sheet can be reliably guided to the storage space. Further, it becomes possible to reliably discharge the rear end of the ejected sheet to the outside of the machine, and thus it becomes possible to store the sheet material in the tray regardless of the length or number of sheet materials. Further, by installing a pair of discharge rollers, it is possible to prevent jams inside the machine. Furthermore, since the sheet material is inverted outside the device and stored in a hanging state, there is no need for a special tray to extend from the main body of the device, making it possible to significantly reduce the installation space of the device. They can be stored in an orderly arrangement regardless of how they are wound.

[Brief explanation of the drawing]

FIGS. 1(a) to (C) are side views showing one embodiment of a sheet material storage tray according to the present invention, and FIGS. 2(a) and (b) are side views showing an embodiment of the sheet material storage tray according to the present invention. Side view, FIGS. 3A to 3C are side views showing modified examples of the upper case of the sheet material storage tray according to the present invention, and FIG. 4 is a schematic configuration diagram of a general image forming apparatus (facsimile machine). , 5th
The figure is a schematic configuration diagram of a conventional image forming apparatus (facsimile machine), and FIGS. 6 to 13 are explanatory diagrams of the same side. 1... Image forming device (facsimile device), 511
．． Roll, 6...Platen roller,'7...
Sheet (recording paper), 8...Thermal head, 1
0...Cutter, 13...Sheet material storage tray, 14...First guide member, 15...
Second guide member, 16... seat storage space,
20...Gripping part, 21...Opening part, 22...
Upper case, 24...Ejection roller pair, 2
5... Paper ejection roller, 26... Pinch roller
, 26a... scraping member, 28... grip roller.

Claims (3)

[Claims] (1) A first guide member that guides the leading end of the ejected sheet downward; a second guide member that faces the first guide member and forms a sheet storage space; and an upper end of the first guide member. a sheet material storage tray provided near the sheet ejection section of the image forming apparatus, the sheet material storage tray comprising: an open section for allowing the rear end of the sheet to be reversed; A pair of discharge rollers consisting of a paper discharge roller and a pinch roller; a gripping portion provided in the storage space to grasp the leading edge of the sheet fed downward; and a grip provided on one roller of the pair of discharge rollers to scrape out the sheet. A sheet material storage tray comprising a sheet scraping member and. (2) The sheet material storage tray according to claim 1, wherein the sheet scraping member is provided on a roller located near the opening portion. (3) The sheet material storage tray according to claim 1 or 2, wherein the sheet scraping member is constituted by a plurality of flexible members extending in the radial direction of the roller.