JPS6221639A - Sheet matching device - Google Patents

Abstract

PURPOSE:To enable a sheet material to be set in a reference position after the sheet material is contained, by a method wherein, when movement of a regulating member is stopped, the stop position of one regulating member, the moving distance of which is limited, always forms a normal position not by the size of the sheet material. CONSTITUTION:A regulating plate 12 is moved by a distance equivalent to rotation of a motor, meanwhile, a regulating plate 11 is moved through movement of a motor, but its moving distance is limited by an oblong hole 15a of a support stand 15. Thus, even if the regulating plate 11 is moved in either a direction (c) or (d), a shaft 18 or a bearing 20 of 191 is brought into contact with the end of the oblong hole 15a and the regulating plate is brought into a state in that it is slipped between a gear 29 and a pulley 30. Conversely, when the motor is rotated, the regulating plate 11 is moved in a reverse direction, and a slip between the gear 20 and the pulley 30 is prevented from occurring until movement is stopped by the other end of the oblong hole 15a. This forces the regulating plate 11 into a state in that it is always pressed against the end of the oblong hole 15a and be stopped in the reference position of the end.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sheet material aligning device, and more particularly, to a sheet material aligning device that operates in the direction of the radius size of the sheet material to align the sheet material in the width direction. The present invention relates to a sheet material aligning device equipped with a regulating member capable of controlling.

Such sheet material aligning devices include intermediate trays installed in image forming devices that store transfer paper on which images have been formed once, and then refeed the sheets one by one to form images again. The following explanation will be given using an intermediate tray as an example, but it is needless to say that the present invention is not limited to this.

[Conventional technology]

Conventionally, the image forming bag 2, which can copy on both sides of a sheet of transfer paper (double-sided copying) or copy two or more types of image information on one side (multiple copying), is used to store transfer paper that has been copied once inside the device. Many of them have an intermediate tray for storing the transfer paper, and a mechanism for refeeding the transfer paper one by one in order to form an image on the transfer paper again from there.

FIG. 5 shows a schematic sectional view of the image forming apparatus. 1 is a paper feeding section, 2 is a photosensitive drum, 3 is a transfer section, 4 is a fixing section, 5,
6 is a conveyance path switching flapper, 7 is a conveyance path, and 8 is an intermediate tray section. Now, the transfer paper sent from the paper feed section l to the intermediate tray section 8 is often fed diagonally because it comes through a long conveyance path, and when it is stored on the intermediate tray section 8, Since the transfer paper is also skewed, variations in the direction and position of the transfer paper on the intermediate tray section 8 (variations in the horizontal direction with the traveling direction of the transfer paper being the vertical direction) occur.

Therefore, the transfer sheets stored in the intermediate tray section 8 are stacked in a scattered manner, and if an attempt is made to re-feed the sheets in this state, skewing, paper re-feeding failure, and jamming may occur. In particular, when obtaining multiple copies, if the lateral position of the re-fed transfer paper deviates from a predetermined position l with respect to the toner image on the photosensitive drum 2 in the transfer section, misalignment will occur in the superimposed images. (Horizontal registration shift).Therefore, there is a risk that the superimposed images will interfere with each other, making it impossible to make the initial desired copy.

Therefore, in order to prevent this, the intermediate tray section 8 is provided with regulating plates 9 (only one side is shown in FIG. 5) having an interval that is the same as the width of the transfer paper or slightly wider than the width of the transfer paper. The surface of the transfer sheet is regulated, and the transfer paper is allowed to rotate during that time.

The regulating plates 9 are moved by the driving force of a motor (not shown), and can be set at intervals commensurate with the size of the transfer paper. Furthermore, if the interval between the regulation plates 9 remains approximately the same as the width of the transfer paper, when the transfer paper enters the intermediate tray section 8 diagonally, it may get caught on the regulation M1 plate 9 and jam. Otherwise, the transfer paper may not be properly stacked on the intermediate tray section 8. Therefore, the regulation plates 9 are moved by the driving force of the motor, etc., and the interval between the regulation plates is widened, so that when the transfer paper enters the intermediate tray section 8, it does not become an obstacle, and the transfer paper is stored in the intermediate tray section 8. Thereafter, the orientation and lateral position of the transfer paper are corrected by narrowing the interval between the regulating plates (shifting).

[Problem that the invention seeks to solve]

By the way, when setting a document on the document table, you can simply place one corner of the document in line with a certain standard on the document table, and you do not have to change the place where you place the document depending on the size of the document. The reference image forming device is convenient for operation.

In this one-side reference image forming apparatus, two of the intermediate tray sections 8
One of the two regulating plates aligns the transfer paper and the toner image on the photosensitive drum 2 in the lateral direction (lateral registration)
It serves as a standard and must be in a fixed position. Also,
The other one had to be moved by the motor or the like until the distance between the side plates was set depending on the size of each transfer paper. In other words, only one regulating plate can be moved, and the above-mentioned part shifting can only be done with one regulating plate on one side, and the stacking state of the transfer paper on the intermediate tray 8 is insufficient, and the paper cannot be re-fed. This caused skewed feeding, paper refeed failure, jams, etc.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned drawbacks of the conventional example, and although the regulating member is movable to adjust the position of the sheet material in the width direction, it can be set to the reference position after the sheet material is stored. An object of the present invention is to provide a sheet material aligning device comprising:

[Means for solving problems]

In order to achieve the above object, the sheet material aligning device according to the present invention has at least two regulating members that regulate the width direction of the sheet materials to be stored, and the interval between the regulating members is set according to the size of the sheet material. In a sheet material aligning device having a drive source for moving the regulating members to widen or narrow them in accordance with When the movement of the regulating member is stopped, the stopping position of the regulating member whose movement amount is limited always remains at a fixed position regardless of the size of the sheet material.

〔Example〕

Hereinafter, the present invention will be explained based on an illustrated embodiment.

1 to 4 show embodiments of the present invention.

1 is a cross-sectional view of the intermediate tray portion of the present invention as viewed from the direction of arrow A in FIG.
1 is a bottom plate of the intermediate tray, 11 is a regulation plate on the reference side, and 12 is a regulation plate on the opposite side. The intermediate tray bottom plate 10 is fixed to left and right support side plates 13, 14 in a stay-like manner. Similarly, the support stand 15 is also fixed to the support side plates 13.14.

This support stand 15 is shown in FIG. 2 when viewed from the direction of arrow B.
The support base 15 has long holes 15a and 15b. Now, attach the shaft 18+ to the slide plate 16 and 17.

182. 191. 192 is caulked, and its shafts 18+, 182 . 191. 192 is bearing 20
are slidably supported in the elongated holes 15a and 15b, respectively. Therefore, the slide plates 16 and 17 are slidably supported by the elongated holes 15 a and t 5 b of the support base 15, respectively. Further, as shown in FIG. 5, a pulse motor 2 is mounted on the support base 15.
1 is fixed, and a gear 22 is fixed to this output shaft.
is engaged with a gear pulley 24 rotatably supported by a shaft 23 caulked to the support base 15. Further, a shaft 25 is also caulked to the support base 15, and a gear pulley 26 is rotatably supported on the shaft 25. A wire 27 is wound around the gear pulleys 24 and 26, and both ends of the wire 27 are fixed to the shaft 192. Therefore, since the regulation plate 12 is fixed to the slide plate 17, the regulation plate 12 can be moved along the elongated hole 15b by rotation of the pulse motor 21. Furthermore, the gear pulley 26 is rotatably supported by a shaft 28 caulked to the support base 15.
There is a gear 29 meshing with the gear 29, and a rotatable pulley 30 coaxial with the gear 29 is connected to the gear 2 by a spring 31.
It is pressed against 9. Therefore, the rotational power transmitted from the gear pulley 26 to the gear 29 is transferred between the gear 29 and the pulley 30.
is transmitted to the pulley 30 by the frictional force of the surface. There is a pulley 33 rotatably supported on a shaft 32 caulked to the support base 15 and a wire 34 wound between the pulley 30, and both ends of the wire 34 are connected to the shaft 19+.
Fixed. Therefore, the regulation plate 1 is attached to the slide plate 16.
1 is fixed, when the pulley 30 rotates, the regulation plate 11 moves along the elongated hole 15a.

Now, when an operation is performed to make double-sided or multiple copies, the motor 21 rotates and the regulation plate 12
The sensor plate 35 fixed to the photo interrupter 3
Move in the direction of arrow A until 6 is detected. After the detection, the pulse motor 21 rotates in the reverse direction, moves the regulating plate 12 in the direction of the arrow to a position where the interval between the regulating plates is commensurate with the size of the transfer paper fed from the paper feed section 1, and then stops. At the same time, the regulation plate 11 first moves in the direction of the arrow.

After the pulse motor 21 starts to rotate in the reverse direction, the movement of the regulating plate 11 is restricted by the length of the elongated hole 15a of the support base 15, which moves in the direction of arrow 2. As described above, when the regulating plate 11 moves in the direction of arrow 2, the bearing 20 at the shaft 191 hits the end of the elongated hole a, and the regulating plate 11 does not move any further.

The gear 29 and the pulley 30 slip due to the restriction plate 11 on the load side not moving, and when the pulse motor 21 stops rotating, the restriction plate 11
is stopped at that position (reference position). Is the interval between the regulation plates 11 and 12 at this time the same as the width of the transfer paper size?
The above operation is performed by selecting the 0 paper size (for example, A4 board, etc.), which is a slightly wider setting value.

Furthermore, the pulse motor 21 starts rotating again and moves the regulating plates 11 and 12 a little in the directions of arrows A and C, widening the gap between the regulating plates and waiting for the transfer paper to come in.Transferring the transfer paper. When the transfer paper is released, a sensor (not shown) is provided in the conveyance path of the transfer paper, detects the transfer paper, and delays the transfer paper by a certain amount of time to determine when the transfer paper will enter the intermediate tray section 8. The motor 21 is rotated in the reverse direction again to move the regulating plates 11 and 12 to return to the setting value of the side plate spacing described above. Then, for the next transfer paper, I widen the gap between the regulating plates a little again and wait.

Repeating the above operations, the transfer paper is transferred to the intermediate tray section 8.
When the storage is finished, the widths of the transfer papers are aligned and stacked, and the regulation plate 11 is stopped at the reference position. Therefore, paper can be re-feeded in good condition.

The reason why the regulation plate 11 is always at the reference position when the above-mentioned regulation plate interval returns to the set value is as follows.

The regulation plate 12 is moved by the rotation of the pulse motor 21,
There is nothing that impedes its movement, so the regulation plate 12 moves due to the rotation of the pulse motor 21, and there is nothing that impedes its movement. Although the regulating plate 11 is moved by the pulse motor 21, the elongated hole tSa
Movement of the limbs is restricted. Therefore, the regulation plate 11
Whether it moves in direction C or direction 2, a shaft 18t is attached to the end of the elongated hole 15a or 19. When the bearing 20 hits the gear 2
9 and the pulley 30.

If the movement is not restricted by the elongated hole 15a, the regulation plate 1
1 should move faithfully to the rotation of the pulse motor 21 like the regulating plate 12. Therefore, when the pulse motor 21 rotates in the opposite direction from the above state, the regulation plate 11 starts to move in the opposite direction, and until the movement is stopped by the other end of the elongated hole 15a, the gap between the gear 20 and the pulley 30 is There is no slippage.

Therefore, in order to widen the regulation plate interval from the set value, the amount by which the regulation plates 11 and 12 are moved by the pulse motor 21 is set to be larger than the distance over which the regulation plate 11 can move by the elongated hole 15a. do. As a result, the regulating plate 11 remains pressed against the end of the elongated hole 15a even when the interval between the regulating plates is widened and when it is narrowed and returned to the set value. Therefore, the regulation plate 11 can be stopped at the reference position determined by the end position of the elongated hole 15a, particularly the end position indicated by C in FIG.

The operating procedure will be briefly explained below.

■Predetermined size setting selection button ON The regulation plates 11 and 12 operate in the direction of widening until the sensor plate 35 fixed to the regulation plate 12 detects the photo interrupter 36, and then operate in the direction of narrowing to the predetermined size width. The machine will stop at the position (home position).

The amount of movement from the home position is programmed into the microcomputer according to each paper size. The paper size is detected by detecting the size of the cassette.

■Copy button ON The regulating plates 11, 12 move in the direction of slightly spreading.

■Detecting sheet material discharge The regulating plates 11 and 12 move in the direction of narrowing.

The regulation plate 11 stops at the reference position.

■Second copy The regulating plates 11,12 widen slightly.

■Detecting the discharge of sheet material (the same applies hereinafter) In addition, in Fig. 3, 39 is a pulley, 40 is a belt, 41 is a sponge roller, 42 is a D-cut roller,
43 is a sensor lever, 44 is a photo interrupter 1
45 is a guide plate, 46 is a paper refeed roller, and 47 is a separation roller.

The sponge roller 41 is driven by a pulley 39 by a drive source such as a motor (not shown). The rotational force is transmitted through the belt 40, and serves to transport the leading edge of the paper in the intermediate tray to a position where it can be re-feeded.

At this time, the sensor lever 43. Photo interrupter-4
4 detects the leading edge of the paper and identifies the presence or absence of paper on the intermediate tray. Also, when refeeding paper, a refeed roller 46, a roller 4
The D-cut roller 42 rotates in order to completely feed the paper into the nip 7. At this time, the sponge roller 41 acts as a weight to hold down the paper.

The above is an explanation of one embodiment of the device according to the present invention, and when the two regulating plates of the intermediate tray are moved by the movement of the motor, the portion that transmits force by frictional force between one of the regulating plates and the motor output. will be established.

When the movement of the regulating plate is restricted and the load becomes larger than the frictional force, the B friction portion slips and the movement of the motor and the movement of the side plate are different. This allows the regulation plate on the reference side of the intermediate tray to move differently from the other regulation plate, and is always at a fixed position in the stopped state. As a result, it is possible to perform a sufficiently effective @ alignment even on a one-sided basis, and it is possible to prevent jams, skew feeding, and lateral misregistration during paper refeeding.

In this embodiment, since both of the regulating plates of the intermediate tray section 8 can be moved to adjust the density, the width of the sheet material on both sides is larger than the width of the sheet material, and moreover, the transfer paper is
l! 8, the reference side regulating plate is always in a fixed position, and it is possible to prevent lateral registration shift when refeeding paper. Furthermore, it has become possible to operate two regulating plates that perform different operations with one drive source.

When the sheet material is stored, the regulation plates on both sides are located outside the width of the sheet material, so the sheet material can be stored smoothly, and after the sheet material is stored, the regulation plate on the reference side is in the reference position. Since the other regulating plate pushes the sheet material in the fixed state, the sheet material is accurately aligned and aligned on one side.

Note that the present invention is not limited to the above-mentioned embodiments, but can also be used as a storage tray in a sheet material processing apparatus.

In other words, even when a plurality of copied sheets are discharged and stacked on a storage tray and stapled with a stapler, the sheets must be aligned on one side. In such a case as well, the sheet material aligning device of the above-described embodiment can be provided at the outlet of the copying machine, and the stabler device is disposed therein.

The present invention is applicable to all cases where it is necessary to align a group of sheet materials having different width sizes based on one side of the sheet material.

〔Effect of the invention〕

Since the sheet material storage device according to the present invention is configured as described above, it is possible to store the sheet materials smoothly even if the width size of the sheet materials changes, and moreover, the sheet materials can be aligned to one side of the sheet materials. effective.

[Brief explanation of drawings]

1 is a cross-sectional view of an embodiment of the present invention seen from the direction of arrow A in FIG. 3, FIG. 2 is a plan view seen from the direction of arrow A in FIG. 3, and FIG. 3 is an embodiment of the present invention. cross-sectional view of the middle tray of
The figure is a detailed explanatory diagram of the pulse motor part, and FIG. 5 is a sectional view schematically showing a copying machine capable of making multi-sided and nine-sided copies. 1-11 paper feed section, 2-m-photosensitive drum. 3-11 transfer section, 4-m constant adhesion section, 5.6---
Conveyance path switching flapper, 7--conveyance path, 8--intermediate tray section, 9-m
- intermediate tray regulation plate, lO-m = intermediate tray bottom plate, 11-m - regulation plate (reference side). 12-m-Regulation plate, 13.14--Support side plate. 15-m-Support stand, 16.17--Slide plate, 18
1* 182 + 19 +, 192-- single axis, 20
-m-bearing, 21-m-pulse motor, 22.29
--- Gear, 23.25, 28.32 -- Single shaft, 24.26 --- Gear pulley, 27 --- Wire, 30
．． 33---Pulley, 31---Spring, 34-m
-Wire, 35-~-sen≠-plate. 36---Photo interrupter, 37---Photo interrupter support plate.

Claims (4)

[Claims] (1) It has at least two regulating members that regulate the width direction of the sheet material to be stored, and the regulating members are used to widen or narrow the interval between the regulating members in accordance with the size of the sheet material. In the sheet material aligning device having a driving source for movement, there is provided a limiting part that limits the amount of movement of one of the regulating members, and when the movement of the regulating member stops, the amount of movement is limited. A sheet material aligning device characterized in that a stop position of the regulating member is always stopped at a fixed position regardless of the size of the sheet material. (2) A power transmission member using frictional force is provided between the regulating member whose movement amount is limited and the drive source, so that when the movement of the regulating member is stopped by the limiting portion, the frictional portion slides. A sheet material aligning device according to claim (1). (3) The sheet material aligning device according to claim 1 or 2, which is an intermediate tray in an image forming apparatus that conveys sheet materials on a one-sided basis to form an image. . (4) The sheet material aligning device according to claim (1), which is a storage tray in a sheet material processing device that aligns one side reference sheet material and bundles and binds the sheet materials.