JPS605502B2 - Sheet reversing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording device such as a copying machine or a printer that records and outputs in sheets, for example, a device that inverts and stores a sheet sent out with the recording surface facing upward, and more specifically, Specifically, it relates to a sorting device that facilitates post-processing such as filing and bookbinding by reversing sheets that have been sent out with the recording side facing upward and stacking and storing them one after another with the recording side facing downward. be.

In conventional copying machines, if sheets are sent out with the recording side facing upward, the image quality can be immediately judged and it is convenient to adjust the exposure amount, etc., but if the sheets are stacked with the recording side facing upward, the first sheet is on the bottom and later on, so when copying documents, books, etc., the order of duplication after copying must be readjusted when filing and binding.

This work requires a lot of effort when the number of pages increases. Similar problems may also occur with printers that print out sheets of paper. In particular, recent high-speed line printers can print out 30 to 4 sheets per minute. is impossible to do manually. A device as shown in FIG. 1 is an attempt to improve this drawback.

This is because the sheet P sent out by the delivery roller 11 hangs down due to its own weight, and the leading edge reaches the protrusion 13 while being guided by the guide plate 12, and the rear part of the copy P is still on the delivery roller 11 and is being pushed out.
The copies P are turned around in the direction of the arrow by the reaction force of the paper with the tip that hit the protrusion as an axis, and are sequentially stacked on the tray 14 with the recording surface facing downward. However, the reversing process in the above-mentioned device is extremely unstable, and is unstable because the falling position of the leading edge of the sheet P changes due to changes in the quality, curl, stiffness, etc. of the sheet paper.
It is also clear from the diagram that it is extremely unstable in response to external air flows such as wind. In fact, it is extremely rare to use a copying machine etc. in an environment with no airflow.
The tip of the copy, once caught on the protrusion 13, can easily come off due to gusts of wind when used near an air conditioner or near a window. Furthermore, in the above-described apparatus, since no guide is provided in the lateral direction for feeding out the sheet P, it is clear that the sheets accommodated in the tray 14 are not aligned in the aforementioned direction. Furthermore, when the sheet P is fed out, the leading edge immediately hangs down, causing the sheet to be turned over without being able to sufficiently check the image quality.
In the sheet reversal direction by this device, the sheet P whose tip is supported by the protrusion 13 reverses and falls while experiencing air resistance over the entire surface of the sheet, so the reversal speed is slow. This can easily cause trouble, and the falling position also tends to vary when falling like this. SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet reversing device that eliminates the disadvantages of conventional devices.

The present invention will be described below with reference to the drawings, with reference to one embodiment. In FIGS. 2 and 3, the reference numeral 15 indicates a copying machine (not necessarily a copying machine, but also a recording paper (sheet) machine such as a printer or a facsimile machine). ), and the recording paper 16 on which copying has been completed is transported by a pair of rubber rollers 18 driven by a drive motor (not shown) as shown by an arrow 17, and then transferred to the copying machine body. It is discharged to the outside of the horse mackerel body through a barrier port 19 provided in a part of the body.

A stacking plate 20 is disposed at the discharge port 19 at an angle Q with respect to the horizontal line, and side plates 21 and 21 are provided on the sides of the stacking plate 20 with a width approximately equal to the width of the recording paper 16 to be discharged.
′ is fixed. On the other hand, the copying machine 15 has an inclined surface below the gate 19, and a sheet dropping section 22 for dropping the sheet along the surface is provided. This sheet drop portion is fixed to the side plates 21, 21'.
A storage box 23 (it does not necessarily have to be in the shape of a box, it just needs to be able to sequentially stack the sheets falling from the sheet falling part) is arranged at the lower end of the sheet falling part 22, The sheet is configured so that it slides down the sheet falling portion 22 and is sequentially stored horizontally in the storage box 23.

In the above-described configuration, the angle Q of the laminated plate 20 is selected to be such that when the sheet is placed on the laminated plate 20, the sheet falls naturally due to gravity, and the lower end and the A gap with a width D is provided between the machine 15 and the side plate 24. However, this width D is such that the leading edge of the recording paper to be discharged hits the battle layer plate 20, and as the recording paper continues to be discharged, the recording paper is drummed. Calendar board 20
It is configured so that it is pushed upward and the sheet that has naturally fallen from the above-mentioned hawk plate 20 can fall through the sheet falling part with the leading end facing downward.

The degree of inclination of the sheet falling section is such that the sheets that have escaped the lower end of the sheet falling section are stacked horizontally.
Any angle may be used, and the direction of inclination is such that the upper and lower surfaces of the sheet on the above-mentioned straight plate and on the storage box 23 are reversed.

In addition, in FIGS. 2 and 3, the storage box 23 is connected to the side plates 21 and 2.
1'.

In this way, the battle plate 21, the sheet falling part 22 and the storage box 23
are all fixed to the side plates 21, 21', so that the sheet reversing device according to the present invention can be fixed to the copying machine by fixing the side plates 21, 21' to the side plate 24 with screws 25. It is something.

In the sheet reversing device having such a configuration, the leading end of the recording paper 16 is ejected from the rubber roller 181 of the copying machine 15 through the closing portion 19 by a certain amount. When the recording paper 16 hits the counterfeit plate 20 and is further ejected, it is pushed up onto the battle layer plate 20, and when the rear end of the recording paper 16 comes off the rubber roller 18, the inertia of the recording paper 16 and the rubber roller The recording paper 16 is pushed out in the direction of the mounting plate 20 by the elasticity of the third
It is pushed up to the position shown by the dotted line 16-1 in the figure.

The recording paper 16 pushed up onto the battle plate 20 in this way
At the next moment, due to gravity, it begins to fall along the battle plate 20,
The tip of the sheet falls in the shape shown in 16-2 by colliding with the slope forming the sheet falling part, and thereafter falls along the slope and gradually changes its falling direction, causing the sheet to fall. When the recording sheets are removed from the section 22, they are placed in a substantially horizontal direction as shown at 16-3, and in this state they are sequentially stored in the storage box 23.

Therefore, the recording paper on the stacking plate 20 is stored in the storage box 23 with its top and bottom upside down, but in the above embodiment, the recording paper pushed up onto the stacking plate 20 falls down. The ejection speed must be controlled so as not to push the next recording sheet onto the soft calendar plate 20 until it is completely removed. In Figures 2 and 3, the angle of inclination Q of the battle plate 20 is fixed, but in reality, the angle of inclination Q varies depending on the flexibility, thickness, slipperiness, etc. of the recording paper. It is convenient to configure the system so that it can be adjusted.

FIG. 4 shows the main parts of the sheet reversing device in which the oblique angle Q is variable in this way (the parts not shown are the same as in FIGS. 2 and 3, and the same numbers as in FIGS. 2 and 3 are used. (The attached members are made of the same material), but in this case, the side plates 21, 21
' and the side plates 26, 26' which are fixedly provided on the laminate plate 2 are constructed separately, and both are fixed with screws 27 so that the laminate plate 20 can be swung in the direction of the arrow R or S. By doing so, the inclination angle Q can be made variable.

In the embodiments described above, only the gravity method in which the recording paper on the battle board is dropped by its own weight to the sheet falling part has been described, but the present invention is not limited to only such a method. Of course, this also includes a system in which the recording paper is dropped from the bed plate to the sheet drop section by an external driving force, and such a system will be explained in more detail with reference to FIG.

Note that the same reference numerals as in FIGS. 2 to 4 refer to the same members, and parts not shown have the same construction as in FIGS. 2 and 3. Also in Fig. 5, a counterfeit plate 20 is fixed by side plates 21 and 21' facing the opening 19, but this battle plate 201 is also arranged approximately horizontally; A rotating shaft 28 is provided approximately in the center in a direction perpendicular to the direction of movement of the recording paper, and rubber rollers 29 are fixed to two locations on this rotating shaft 28.
.

Furthermore, slits 33 are provided in the side plates 21, 21',
The rotary shaft 28 is rotatably inserted here, and the rotary shaft 2
A belt 38 is wound between a pulley 34 fixed to one end of the motor 8 and a pulley 37 fixed to a motor 36 provided on a part of a side plate 35, and the belt 38 is driven in the direction of the arrow T. The rubber roller 29 is driven in the direction of moving the recording paper from the top of the recording board 20 toward the sheet falling section.

Therefore, it can be easily detected by disposing a light emitting element and a light receiving element close to the rubber roller 18 that the recording paper is ejected from the rubber roller 18 (although not shown).

) The plunger 32 of the electromagnetic solenoid 31 is moved downward to bring the rubber roller 29 into contact with the recording paper on the calendar board 20, so that the rotation of the rubber roller 29 moves the recording paper to the sheet dropping section. control, and in a state other than the above, the plunger 32 moves upward to pull up the rubber roller 29, and the roller 29
It can be controlled so that a gap can be created between the recording paper and the calendar plate 20 into which the recording paper discharged by the rubber roller 18 can be inserted. The operating principle of the sheet reversing device shown in FIG. 5 is the same as that of the other embodiments, except that the ejection of the recording paper from the mounting plate is not dependent on gravity but on motor drive. The only difference is that

As described above, the sheet reversing device according to the present invention first places the sheet on the stacking slope, and then introduces it to the sheet falling part and reverses it. Therefore, one side of the sheet can be observed on the Dungeon board, and the sheet can be stored. Since one side can be observed on the other side, the recording side can always be observed on one side, making it extremely easy to check the progress of copying or printing, for example.

Therefore, sheets can be stacked and accommodated in a convenient page order regardless of the need to check the recording surface, whether it is a copying machine that sends out sheets with the recording surface facing upward or a copying machine that sends out sheets with the recording surface facing down. Furthermore, since it can be easily attached to the outlet of an existing copying machine, printer, facsimile, etc., it can be used extremely easily and at low cost.

[Brief explanation of drawings]

FIG. 1 is a side view of a conventional sheet reversing device, FIG. 2 is a perspective view of a sheet reversing device according to the present invention, and FIG. 3 is a side view of a conventional sheet reversing device.
-P' side sectional view, FIGS. 4 and 5 are perspective views of essential parts of other embodiments of the present invention. Here, 16 is a recording paper, 20 is a stacking plate, 22 is a sheet dropping section, and 23 is a storage box. Tsutomu's younger brother 2 figure grandchild 3 figure younger brother 4 figure★r digit figure

Claims (1)

[Claims] 1. A loading means for temporarily placing the transferred sheet so that it can be observed with one side facing up, and then discharging the sheet in a direction opposite to the conveying direction; , a sheet dropping means having an inclined part that changes the falling direction of the sheet discharged from the loading means to a direction such that the upper and lower surfaces of the sheet are reversed; and a sheet dropping means disposed at the lower end of the sheet dropping means, A sheet reversing device comprising: storage means for stacking and storing the sheets that have fallen through the sheet dropping means in order so that they can be observed with the other side facing up;