JPH0826557A - Paper discharge device - Google Patents

Abstract

PURPOSE:To provide a paper discharge device provided with a paper reversing device capable of reasonably performing printing smoothly even in the case of continuously printing a large amount of recording paper. CONSTITUTION:A device comprises a storage chamber 19 storing recording paper 15 conveyed to be printed in a recorder, paper loading base 20 arranged in the storing chamber 19 to load the recording paper 15 upward and a paper reversing device 21 arranged between a conveying path of the recording paper 15 and the storage chamber 19 to reverse the recording paper 15, conveyed by placing a printing surface upward, discharged so as to be loaded on the paper loading base 20 by placing the printing surface downward. Accordingly, by eliminating necessity for discharging the recording paper, conveyed by placing the printing surface upward, onto the device, since all the recording paper can be accumulated in the storage chamber, even with no space on the device, giving a burden related to strength of the device and giving a bad influence to also printing performance are eliminated, and continuously printing can be smoothly performed reasonably in a large amount of the recording papers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet discharging device such as a stacker for storing recording sheets printed and copied by a recording device such as a printer or a copying machine, and particularly to a sheet reversing device for reversing recording sheets. It is about.

[0002]

2. Description of the Related Art In a printer, a copying machine or the like, in the case of an upper surface paper-passing system (a system in which a recording paper is printed through the upper side of a photosensitive drum) such that the printing surface faces downward, the paper is discharged after printing. There is no problem because the recording sheets are stacked in page order even if they are left as they are, but in the case of the lower surface paper feeding method (the recording paper is printed through the lower side of the photosensitive drum), the printing surface is up. Since the discharged recording sheets are stacked in the order opposite to the page order as they are, the page alignment work is required to correct the page order later.

Therefore, conventionally, for example, the actual fairness 5-12
As in the image forming apparatus disclosed in Japanese Patent Publication No. 205, the recording sheet after printing is raised along a wall standing upright on the downstream side in the conveying direction of the recording sheet of the printer, and makes a U-turn so that the recording sheet is placed on the printer. By ejecting the paper to the receiving section, the printing surface can be arranged in the page order with the printing surface facing down.

[0004]

However, in the case of the conventional image forming apparatus, such as the image forming apparatus disclosed in the above publication, in which the paper is discharged to the receiving portion of the apparatus, a large amount of recording paper is continuously formed. In the case of a large-capacity image forming apparatus system that performs printing by printing, a space is required to secure the height of the recording paper to be discharged onto the device, and the weight of the recording paper increases, so that the device cannot withstand the strength. Cannot be achieved, and in that case, the printing performance is adversely affected. In addition, the recording sheet may be overloaded depending on the transport path, and may not be practically realized.

In view of the above problems, the present invention provides a paper discharge device provided with a paper reversing device that can smoothly and reasonably perform printing on a large amount of recording paper continuously. This is an issue.

[0006]

In order to solve the above problems, the paper discharge device according to the present invention has the following configuration.

(1) An accommodating chamber for accommodating recording paper printed and conveyed by a recording device, a paper placing table arranged in the accommodating chamber for placing the recording paper thereon, and a conveying path for the recording paper. And a paper reversing device that is disposed between the storage chamber and reverses the recording paper conveyed with the printing surface upward and ejects the recording paper so that the printing surface faces down and is placed on the paper mounting table. .

(2) In the paper discharge device having the above structure (1), the paper reversing device is rotatable and detachable in the paper discharge device so that it can be rotated and tilted toward the recording device side during jam processing. The door member is rotatably provided on the recording device side of the paper reversing device so that the door member can be tilted toward the recording device side by rotating the door member that is opened during jam processing.

(3) In the paper discharge device having the above-mentioned constitution (1) or (2), the recording paper reversing device has a plurality of pulleys arranged at both ends and a plurality of ring-shaped pulleys hung over the pulleys. It has a wrapping rope.

[0010]

[Action]

(1) According to the paper discharge device having the above-mentioned configuration (1), the paper reversing device for reversing the recording paper conveyed with the printing surface up and placing it on the paper mounting table with the printing surface down is recorded. Since it is arranged between the paper conveyance path and the storage chamber, there is no need to discharge the recording paper conveyed with the printing surface up to the device, unlike the conventional image forming device disclosed in the above publication. Since all of the recording paper can be stored in the storage room, even if there is no space on the device, it does not impose a burden on the strength of the device and does not adversely affect the printing performance. It is possible to continuously and smoothly print.

(2) According to the paper discharge device having the above configuration (2), the paper reversing device can be turned and tilted toward the recording device side during jam processing, so that the paper reversing device is located on the opposite side of the recording device. It is possible to prevent the paper reversing device from overhanging and largely protruding from the installation space of the paper discharge device to increase the required space.

Further, since the paper reversing device is provided detachably, the paper discharging device can be miniaturized by removing it when not in use.

Further, since the door member provided on the paper reversing device and pivoting and opening at the time of jam handling is provided on the recording device side of the paper reversing device, the door member is provided, for example. It is possible to prevent the required space from increasing by tilting the door member to the opposite side and causing the door member to largely protrude from the installation space of the paper discharge device.

(3) According to the paper discharge device having the above configuration (3), the paper reversing device includes a plurality of pulleys arranged at both ends, and a plurality of annular wrapping ropes hung around the pulleys. With the above configuration, when the paper reversing device is rotated or the door member is opened during the jam processing, the inside and outside of the paper reversing device can be checked at a glance at the same time. Depending on the case, it is also possible to put your hand from the front side and take out the paper jammed on the back side from between the ropes, or put your hand from the back side to take out the paper jammed on the front side from between the ropes. Become.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a paper discharge device 1 according to an embodiment of the present invention.
FIG. 2 is a diagram showing an image forming apparatus system using 0.

In FIG. 1, reference numeral 10 is a large-capacity paper discharging device, 11 is a printer device (recording device), and 17 is a large-capacity paper feeding device. The recording paper 15 supplied from the paper supply device 17 is printed by the printer device 11,
The sheet is conveyed by 8 and is discharged and stored on the sheet mounting table 20 in the storage chamber 19 of the sheet discharging device 10.

This image forming apparatus system is intended for continuous printing on a large amount of recording papers 15, and therefore both the paper discharge device 10 and the paper feeding device 17 have a capacity of 2 sheets.
A large-capacity one that can store 000 or more recording sheets 15 is used.

As shown in FIG. 2, the paper discharge device 10 places the recording papers 15 conveyed one by one into the storage chamber 19 from the printer device 11 on the right side of the figure by the conveying device 18. It has a paper table 20. This paper table 20
Can be moved up and down by being driven by a driving means (not shown).

A paper reversing device 21 for reversing the recording paper 15 is detachably provided at the upper left portion of the paper discharging device 10 in FIG. The paper reversing device 21 includes two drive pulleys 26 driven by a drive means (not shown), and the drive pulleys 2
Two looped wrapping ropes 29 hung between 6 and
It has two driven pulleys 27 that are driven by the drive pulleys 26 via.

Further, a plurality of idle rollers 31 are provided, which come into contact with the outside of the winding rope 29 and rotate in a driven manner, and the plurality of winding ropes 29 and idle rollers 31 wound around the drive pulley 26 and the driven pulley 27. The recording paper 15 is sandwiched between and and can be conveyed.

The paper reversing device 21 is rotatably provided with respect to the paper discharging device 10 as shown by a chain double-dashed line in FIG. Further, as shown in FIG. 3, the paper reversing device 21 is rotatably supported by the printer device 11 so that the door member 21a is rotatable.
Is provided.

The operation of the paper discharge device 10 provided with the paper reversing device 21 will be described below. In FIG. 2, the recording paper 15 conveyed from the printer device 11 on the right side outside the drawing is conveyed in the arrow direction by the conveying device 18, and when it enters the storage chamber 19 from the wall portion 22, it is conveyed to the upper side of the switching member 24. . When the switching member 24 does not turn over the recording paper 15, the leading end of the switching member 24 rotates upward in the figure, and the recording paper 15 that has been conveyed is sent to the lower side of the switching member 24.

When the recording paper 15 further advances above the switching member 24, the recording paper 15 is sandwiched between the winding rope 29 hung on the driving pulley 26 and the idle roller 31, and is fed toward the driven pulley 27 side. . The recording paper 15 makes a U-turn along the outer shape of the driven pulley 27, is further sandwiched between the winding rope 29 and the idle roller 31, and is sent to the lower right side in the drawing to be stored in the storage chamber 19. Paper stand 2
0 is ejected.

By passing the recording paper 15 through the paper reversing device 21 in this manner, the recording paper 15 whose printing surface was upside down is inverted and the printing surface is turned down so that the paper is placed on the paper placing table 20. Will be piled up. Therefore, the recording paper 15
Are stacked in page order, eliminating the need to do page alignment later.

The inside of the paper reversing device 21 (the paper ejection device 10
Side, the lower side in the drawing), the paper reversing device 21 is rotated in the direction of the arrow as shown by the two-dot chain line in FIG. 2, and the back side of the paper reversing device 21 is within a range where the recording paper 15 does not drop. It's wide open, so you can put your hands in it and take out the jammed paper.

As described above, since the paper reversing device 21 is rotated and can be tilted toward the printer device 11 (not shown), for example, the paper reversing device 21 is tilted toward the opposite side to the printer device 11, and the paper reversing device 21 is ejected. It is possible to prevent the required space from increasing by largely protruding from the installation space of 10.

When a paper jam occurs on the front side of the paper reversing device 21 (the side opposite to the paper discharging device 10, the upper side in the figure), the door member 21a of the paper reversing device 21 is rotated in the direction of the arrow as shown in FIG. The front side of the paper reversing device 21 can be opened, and a jammed paper can be taken out from there by inserting a hand.

Since the door member 21a is provided on the printer device 11 side of the paper reversing device 21 so that the door member 21a can be tilted toward the printer device 11 side (not shown) in this manner, for example, the door member 21a. It is possible to prevent the required space from being increased by tilting the door to the side opposite to the printer device 11 and the door member 21a largely protruding from the installation space of the paper discharge device 10.

Further, since the paper reversing device 21 is detachably provided, it can be removed by removing it when not in use.
Can be reduced in size.

Further, since the paper reversing device 21 has two pulleys 26 and 27 at both ends and two annular wrapping ropes 29 hung on the pulleys, it is possible to prevent jams. Sometimes when rotating the paper reversing device or opening the door member 21a, the inside of the paper reversing device 21 can be visually confirmed at the same time, unlike the case where a sheet-shaped belt is used. can do. Also, depending on the case, you can put your hand from the front side and take out the paper jammed on the back side from between the ropes, or put your hand from the back side and take out the paper jammed on the front side from between the ropes. Becomes

In the above embodiment, the paper reversing device 2
Although the case where 1 has two wrapping ropes 29 has been described, it goes without saying that the number of wrapping ropes may be three or more, or any number may be used.

[0032]

As described above, according to the paper discharge device of the first aspect of the present invention, the recording sheet conveyed with the printing surface facing up is reversed so that the printing surface faces down. Since the paper reversing device to be placed on the recording paper is arranged between the conveyance path of the recording paper and the storage chamber, the recording paper conveyed with the printing surface facing up like the conventional image forming apparatus disclosed in the above publication. Since it is no longer necessary to eject the recording paper onto the device and all of the recording paper can be stored in the storage chamber, there is no space on the device and the device is burdened with its strength and the printing performance is adversely affected. It is possible to continuously and smoothly print on a large amount of recording paper without supplying the recording paper.

According to the paper discharge device of the second aspect of the present invention, the paper reversing device can be turned and tilted toward the recording device side during jam processing, so that the paper reversing device is opposite to the recording device side, for example. It is possible to prevent the paper reversing device from largely protruding from the installation space of the paper discharge device to increase the required space.

Further, since the paper reversing device is provided detachably, the paper discharging device can be downsized by removing it when not in use.

Further, since the door member provided on the paper reversing device and rotated and opened during the jam processing can be tilted toward the recording device side, it is provided on the recording device side of the paper reversing device. It is possible to prevent the required space from increasing by tilting the door member to the opposite side and causing the door member to largely protrude from the installation space of the paper discharge device.

Further, since the door member is provided on the recording device side of the paper reversing device, the door member is provided on the supporting portion side of the paper reversing device to the paper discharging device, and the door member is rotated and opened. At the same time, it is well balanced in terms of weight, safe and durable, and the operability of the paper reversing device can be improved.

According to the third aspect of the present invention, there is provided the paper reversing device in which a plurality of pulleys are arranged at both ends and a plurality of annular wrapping ropes that are hung on the pulleys. Because of the configuration including the above, when the paper reversing device is rotated or the door member is opened during the jam processing, the inside and outside of the paper reversing device can be checked at a glance at the same time. Depending on the case, it is also possible to put your hand from the front side and take out the paper jammed on the back side from between the ropes, or put your hand from the back side to take out the paper jammed on the front side from between the ropes. Become.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an image forming apparatus system using a paper discharge device 10 according to an embodiment of the present invention.

FIG. 2 is a schematic side cross-sectional view of the paper discharge device 10 provided with a paper reversing device 21.

3 is a schematic side cross-sectional view of the paper discharge device 10 showing the operation of the paper reversing device 21. FIG.

[Explanation of symbols]

 10 Paper Ejection Device 11 Printer Device 15 Recording Paper 17 Paper Feeding Device 18 Conveying Device 19 Storage Room 20 Paper Placement Table 21 Paper Reversing Device 21a Door Member 22 Wall 24 Switching Member 26 Drive Pulley 27 Driven Pulley 29 Winding Rope 31 Idler Roller

Claims (3)

[Claims] 1. A storage chamber for storing recording paper printed and conveyed by a recording device, a paper placing table arranged in the storage chamber for mounting the recording paper thereon, and a conveyance path for the recording paper and the recording paper. And a paper reversing device that is disposed between the storage chamber and reverses the recording paper conveyed with the printing surface upward and ejects the recording paper with the printing surface downward so as to be placed on the paper mounting table. A paper discharge device characterized by the above. 2. The paper reversing device is rotatably and detachably attached to a paper discharging device so as to be rotated during jam processing and to be tilted toward the recording apparatus side. A door member that opens during jam processing is rotated. The paper discharge device according to claim 1, wherein the door member is rotatably provided on the recording device side of the paper reversing device so that the door member can be moved and tilted toward the recording device side. 3. The recording paper reversing device comprises: a plurality of pulleys arranged at both ends, and a plurality of annular wrapping ropes stretched around the plurality of pulleys. The paper discharge device according to claim 1 or claim 2.