JPS60236936A - Sheet arranging device - Google Patents

Abstract

PURPOSE:To reliably arrange sheets properly in a simple and low-priced device by providing a pair of vibrating brackets respectively having guides fixed thereto, which are held in parallel to each other and which can be vibrated in the opposite direction by vibration means. CONSTITUTION:A box-shaped frame 1 having the upper surface opened is provided with a pair of vibrating brackets 2, 3 inverted-U-shaped in section supported thereon at engaging portions 2B, 3B disposed on both ends of the brackets in such a manner as to move in directions of arrows B, C, respectively. Plate springs 4 are interposed between side portions 2A, 3A of both vibrating brackets 2, 3 and the side surfaces of the frame 1. A coil 9A and an iron core 9B connected to a.c. power source 12 through a switch 11 are disposed at the center of the frame 1, and magnetic bodies 7, 8 are fixed to regions of the side portions 2A, 3A that are opposite to both ends of the iron core 9B. Two pairs of guides 5, 6 are mounted on the respective brackets 2, 3 in such a manner that the width between the guides is adjusted according to paper size, and a fixed plate 10 where sheets are placed is disposed between both side plates 5, 6.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application) The present invention relates to a paper alignment device, and particularly to a paper alignment device for recording sheets or originals in electrophotographic copying machines, printing machines, facsimile machines, and the like.

(Prior Art) In a typical electrophotographic copying machine, recording paper is loaded into a paper feed tray of the electrophotographic copying machine.

When the electrophotographic copying machine starts a copying operation, the recording paper is pulled out from the paper feed tray, undergoes predetermined processes such as i~lunar transfer and fixing, and is ejected onto the output tray. Ru.

The recording paper is transported from the paper feed tray to the output tray without stopping, and a part of it is always in close contact with the transport roller, belt, or photoreceptor, so the recording paper is transported from the paper feed tray to the output tray. If the toner image is loaded in the correct position on the recording paper, that is, if at least the side fa portion of the recording paper parallel to the conveyance direction is aligned, the toner image will be transferred to the correct position on the recording paper. That will happen.

It is well known that electrophotographic copying machines not only have the function of copying on one side of recording paper, but also have the function of copying on both sides.

Two-sided copying methods for electrophotographic copying machines include two methods: copying the front and back sides of each sheet of recording paper in succession, and copying only the front side of a predetermined number of recording sheets. There is a method of doing this continuously and then copying the back side.

Particularly when using the latter method, it is necessary to provide a storage section inside the electrophotographic copying machine to temporarily store recording sheets on which only the front side has been copied. After a predetermined number of recording sheets have been stored in the storage section, the recording sheets are transported to undergo a predetermined process for back side copying.

During the conveyance, as in the case where the recording paper is pulled out from the paper feeds 1 to rays, if at least the side edges of the recording paper parallel to the conveyance direction are not aligned, the back side of the recording paper will be You will no longer be able to get a Bee image in the correct position.

In the storage section, the recording paper whose front surface has been copied must be stored horizontally in many cases. In this case, the following method can be used to align the side edges of the recording sheets parallel to the conveyance direction when back side copying is performed.

That is, guides are provided so as to come into contact with a pair of opposing side edges of the recording sheets stored in the storage section, and the opposing guides are vibrated in opposite directions to forcibly align the recording sheets. It can be aligned to

A conventional paper alignment device uses a link device and a motor to vibrate the guide. However, the use of the link device has the disadvantage that the mechanism becomes very complex and failures are frequent. In addition, in the case where a motor independent from the various devices of the electrophotographic copying machine is used as the drive source, or in the case where a clutch or the like is added to serve as the drive source for the various devices, either Even in the case of
There is a disadvantage that the manufacturing cost of the electrophotographic copying machine increases.

(Objective) The present invention has been made in order to eliminate the above-mentioned drawbacks, and its object is to forcibly hold a pair of opposite side edges of paper together without using a linkage device and a motor. To provide a paper alignment device that can align paper.

(Overview) To achieve the above object, the present invention provides a spring means connected to a pair of vibrating brackets to which a guide is fixed, a coil disposed between the pair of vibrating brackets, and a spring means that periodically changes the coil. The vibrating means of the guide is comprised of a power source that supplies a current, and a magnetic body fixed to each of the pair of vibrating brackets so as to face both ends of the coil.

(Example) The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a schematic plan view of one embodiment of the present invention, and FIG. 2 is a schematic plan view of an embodiment of the present invention.
It is a sectional view taken along the line AA in the figure.

Further, in FIG. 1, the fixing plate 10 is indicated by a chain double-dashed line.

In the figure, a frame 1 is box-shaped with an open top surface. The vibration bracket 2 has a side surface portion 2A having a U-shaped cross section.

At both ends of the vibration bracket 2, locking portions 2B protrude. The vibration brackets i to 2 are supported by the frame 1 by the locking portion 2B coming into contact with the upper end of the frame 1.

The vibration bracket 3 is symmetrical to the vibration bracket 2, and is supported by the frame 1 in the same way as the vibration bracket 2. The vibration bracket 2.3 is connected to the locking part 2.
B and locking part 3B are used as sliding parts, and can be moved in the direction of arrow B or C, respectively.

The leaf spring 4 is attached to the side surface 2A1 of the vibration bracket 2.3.
3△ and the side surface of the frame 1.

Coil 9Δ and iron core 9B are arranged at the center of frame 1. Both terminals of the coil 9A are connected to a switch 11.
It is connected to the AC power supply 12 via.

A magnetic body 7.8 is fixed to the side surface portion 2A13Δ so as to face both ends of the iron core 9B or the coil 9A.

On the upper part of the vibration brackets 1-2 and 3, a guide 5.6 bent in an L-shape is arranged such that the inner surfaces thereof face each other. , is fixed.

In FIG. 1, two guides 5 and 6 are arranged on the vibrating bracket 2 and the vibrating bracket 3, but the number is not particularly limited to this, and the guides The width of 5.6 may be set to be approximately the same as the length of the vibration brackets 2.3, and one may be provided for each.

Furthermore, the fixation may vary depending on the size of the recording paper.
Said guide 5.6 is movable relative to the oscillating bracket 2.3 in the direction of the arrow B or C by means not shown.

A fixing plate 10 is arranged between the opposing side surfaces 5A and 6A. The fixed plate 1o is a plate-shaped body having a width smaller than the width of the recording paper, and is designed so that it does not come into contact with the guide 5.6, or can slide very smoothly even if it does come into contact with the guide 5.6. , and is fixed to the frame 1 or the frame of the electrophotographic copying machine.

Now, in one embodiment of the present invention having the above configuration,
First, a predetermined number of recording sheets 9-, whose front surfaces have been copied, are placed on the fixing plate 1o.

After that, when the switch 11 is turned on, alternating leakage magnetic flux is generated from both ends of the iron core 9B, and each time the magnetic flux is generated, the magnetic bodies 7 and 8 are attracted, and the vibration bracket 2
The vibration bracket 3 vibrates in the direction of arrow B and the direction of arrow C.

During the vibration, the side surfaces 5A and 6A come into contact with the side surfaces of the recording paper, thereby aligning the opposing side edges of the recording paper.

When the side ends are aligned, the switch 11 is opened.

So that the recording paper is conveyed in the direction of the arrow or in the direction of F.
By configuring the electrophotographic copying machine, copies can be made at a predetermined position on the back side of the recording paper.

When changing the size of recording paper, move the guides 5.6 so that the distance between them increases or decreases.
It is sufficient to move it relative to the vibration bracket 2.3.

In the above description, 7 and 8 are simply magnetic materials, but permanent magnets may also be used. In this case, the polarity of the end of 7 facing the iron core 9B and the polarity of the end of 8 facing the iron core 9B should be different - that is, the polarity of one of them should be N, and the polarity of the other should be different. S
It is necessary to set it to the pole.

As a result, vibration bracket 2 and vibration bracket 3
can vibrate in opposite directions to each other, and at the same time, in addition to the attractive force of the magnetic body 7.8, it is also possible to obtain a repulsive force against the iron core 9B, so that the guide 5.6 can be vibrated efficiently. can.

Furthermore, the natural frequency of the system including the vibration bracket 2, the leaf spring 4, the guide 5, and the magnetic body 7, and the natural frequency of the system including the vibration bracket 1-3, the leaf spring 4, the guide 6, and the magnetic body 8. If the paper alignment device is configured so that the frequency of the AC power source 12 matches the frequency of the vibration brackets 1 to 2,
．． 3 can resonate, thereby making it possible to perform the vibration more efficiently.

As is clear from the above explanation, the vibrating bracket 2 and the vibrating bracket 3 vibrate in opposite directions (or in opposite phases) so as to remain substantially parallel to each other in order to align the recording sheets. It would be good if you could.

Therefore, in FIG. 1, the coil 9A and the iron core 9B are arranged at the center of the frame 1 so as to apply a vibration force to the center portions of the vibration brackets 2 and 3.

However, for example, by setting the lengths of the side parts 2A, 3A to be slightly smaller than the internal dimensions of the frame 1, the vibration force can be applied to any part of the side parts 2A, 3A. The bracket 2 and the vibrating bracket 3 can be vibrated in opposite directions while remaining substantially parallel to each other.

Furthermore, as mentioned above, the lengths of the side parts 2A and 3A are
Even if the length is not set to be slightly smaller than the internal dimensions of the frame 1, it is possible to make the vibration bracket 2.3 almost symmetrical around the part where the vibration force is applied (i.e. the part where the magnetic body 7.8 is attached). It is also possible to vibrate in the same way by distributing a leaf spring 4 to the center.

Further, although the coil 9A has been described as being connected to the AC power source 12, it may be connected to a pulse power source or a DC power source having a changeover switch that can be turned on/off intermittently.

Furthermore, although 4 was explained as being a leaf spring,
If the vibration brackets 2 and 3 can be biased,
Of course, a coil spring or the like may also be used.

The fixing plate 10 is drawn in a rectangular shape in FIG. However, it is not particularly limited to this shape.

That is, as shown in FIG. 3, the guides 5.6 (symbols 5B, 6
(as shown in B), so that the recording paper can be supported without the ends of the recording paper sagging even when moved relative to the vibration bracket 2.3. , the fixed plate 10 may be provided with a notch 10A having a width slightly wider than the width of the guide 5.6, through which the guide 5.6 can move.

In the above description, one embodiment of the present invention is used in a storage section of an electrophotographic copying machine having a double-sided copying function, in which recording sheets are temporarily stocked after the front-side copy is completed. It may also be applied to 14- Ejection 1 to Ray, which ejects the recording paper after copying is completed in an electrophotographic copying machine that does not have a double-sided copying function, or the original document in an electrophotographic copying machine that has an automatic document feed function. .

Furthermore, it goes without saying that the present invention can be applied not only to electrophotographic copying machines but also to printing machines, facsimile machines, and the like.

In these cases, the fixed plate 10 does not need to be placed horizontally, but may be tilted as necessary, and a stopper may be installed to prevent the recording paper or document from slipping. , it is possible to align not only the pair of opposing ends of the recording paper or document, but also all four sides.

(Effects) As is clear from the above description, according to the present invention, the following effects are achieved.

(1) Since a coil is used instead of a motor as the vibration drive source, the paper alignment device can be manufactured at low cost.

(2) Since a complicated link device is not used, the mechanism can be simplified, thereby improving the reliability of the paper aligning device.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of one embodiment of the present invention, and FIG. 2 is a schematic plan view of an embodiment of the present invention.
FIG. 3 is a schematic plan view showing a modified example of the fixed plate. 1...Frame, 2.3... Vibration bracket, 4.
...Plate spring, 5,6...Guide, 7,8...Magnetic material, 9△...Coil, 9B...Iron core, 10...Fixing plate, 10A...Notch, 12 ...Patent attorney representing AC power supply Michito Hiraki and 1 other person

Claims (3)

[Claims] (1) A pair of vibrating brackets held parallel to each other, at least a pair of guides each fixedly attached to the pair of vibrating brackets and having surfaces facing each other, and fixedly disposed between the opposing surfaces of the at least one pair of guides. A paper aligning device comprising: a fixed plate; and a vibrating means for vibrating the pair of vibrating brackets in opposite directions; A coil disposed between a pair of vibrating brackets, a power supply supplying a periodically changing current to the coil, and a magnetic body fixed to each of the pair of vibrating brackets so as to face both ends of the coil. A paper alignment device characterized by: (2) The paper aligning device according to claim 1, wherein the power source that supplies the periodically changing current is an AC power source. (3) The paper aligning device according to claim 1 or 2, wherein the magnetic body is a permanent magnet. (4-) The above-mentioned patent is characterized in that the at least one pair of guides can change their fixing position with respect to the pair of vibration brackets so that the distance between the opposing surfaces can be increased or decreased. A paper aligning device according to claim 1, 2, or 3.