JPH02249857A - Sheet conveyor - Google Patents

Abstract

PURPOSE:To add a sheet conveying function by means of manual feeding without increasing size of a device as a whole by installing a conveying means which changes the direction of a sheet through a two-piece pair of guide plates traveling between two orthogonal conveyor routes. CONSTITUTION:After checking a fact that duplex-multicopying is not yet operated, a sheet 6 is inserted from a paper feeding port in an A direction till it comes into collision with a shutter member 51. With this manual paper-feed starting signal, an eccentric cam 32 rotates, and guide plates 21, 22 are turned upward with a pin 25 as the center. Simultaneously, a paper refeeding conveyor driven roller 39 is retracted to the more upper part than a underside of the guide plate 22. At a point of time when the eccentric cam 32 has completed its rotation approximately as far as 180 degrees, a manual-feed roller 50 is driven and the manual feeding sheet 6 is covneyed toward the inmost side at specified speed. After conveying the sheet 6 as long as the specified value, both manual paper feeding rollers 33, 50 are stopped. Successively, a pressure arm 31 is lowered by rotation of the eccentric cam 32 and reset to its initial state.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a sheet material conveying device, and more specifically to a sheet material conveying device that has an added function of conveying sheet materials by manual feeding in which sheet materials are inserted one by one from the outside. It relates to a material conveyance device.

(0) Prior Art A conventional electronic copy a1100 is shown in FIG. The transfer material 102 fed from the tray 101 with the manual paper feed tray 10 laid sideways is transferred to paper feed rollers 103, 105.
It is transported by registration rollers 106 and transferred to a transfer guide 107.
, 109, the image on the drum 110 is transferred and separated by the transfer separation charger 11.1, 112, transported by the transport section 113, the toner image is fixed by the fixing roller section 115, and finally the toner image is transferred to the paper output tray. It is conveyed in a fixed direction until it is discharged to 116.

In addition, in the case of multiple image formation, after the fixing is completed, the fixing unit 11
The transfer material 1.02 exiting from the paper deflecting plate 117 is directed to the double-sided multiplexing sheet conveyance path 1], 9, passes through this, and is sent to the drum 11o and the fixing roller section 115 again. , in the case of double-sided image formation, the discharge roller 12
When the transfer material 102 is being ejected due to
It passes through a conveyance path 119 and is sent to the drum 110.

(C) Problem B to be solved by the invention However, as mentioned above, the manual paper feed tray 10
1 is located on the right side of the electronic copying machine 100.

Fold the tray 101 to the right and place the transfer material 102 on top of it.
In order to set the copy machine, it is necessary to provide sufficient space on the right side of the copy machine 100, which poses the problem of poor space efficiency for installing the copy machine.

In addition, when paper is fed from the front of the electronic copying machine 100 perpendicularly to the sheet conveyance path 119 for double-sided multiplexing using a conventional manual paper feed tray 101, the orthogonal conveyance means and the transfer material 102 are This method requires a positioning means, a means for switching the conveyance mechanism of the duplex sheet conveyance path 119, etc., and has the disadvantage that the height dimension becomes large.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a sheet conveyance device that can significantly improve installation efficiency without increasing the size of the entire device including the conveyance path.

(D) Means for Solving the Problems The present invention has been made in view of the circumstances mentioned in -F. For example, when shown with reference to FIGS. 3 and 4, In addition, it has two conveyance paths (20) and (26) for the sheet material (6) that are perpendicular to each other, and the two conveyance paths (20)
), (28), the two transport paths (20
), (26+), a pair of guide plates 21) and (22) are provided, and the guide plates (21) and (22) are provided.
(22) from one (26) to the other (20) and from the other (20) to one (26) of the two transport paths (20) and (26).
2) and from one conveyance path (26) to the other conveyance path (20
), the sheet material conveying means (50) (33), (36), (39) for conveying the sheet material (6) while changing its direction.

(E) Function Based on the above configuration, after the sheet material (6) is transported from one transport path (26) to the guide plates (21) and (22) by the sheet material transport means (50) (33), the guide The plates (21) and (22> are moved by the drive means (31) and (32) to the other orthogonal conveyance path (20), and the guide plate (
The sheet material (6) in 21) and (22) is transported to another transport path (20) by the sheet material transport means (36) and (39).

(22) is connected to the drive means (31) on the other conveyance path (20).
, (32), and the sheet material (6) is relayed and conveyed by the sheet material conveying means (36) and (39).

Note that the symbols in parentheses above do not limit the configuration in any way.

(F) Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 4. 1 is a detailed perspective view of the embodiment, FIG. 2 is an external perspective view, FIG. 3 is a longitudinal sectional front view of FIG. 2, and FIG. 4 is an explanatory view of the operation of FIG. 1.

Reference numeral 1 denotes a copying machine equipped with a manual feed port 2, a manual feed tray 3, and a cassette 5 on the front, that is, it is formed into a front rope ink type. Then, as shown in FIG. 3, the sheets 1 and 6 stored in the cassette 5 are separated by the pickup roller 7 and fed, and then conveyed to the registration rollers 10 by the conveyance rollers 9. The registration rollers 10 position the sheet material 6 in synchronization with the image formed on the drum 11, and convey the sheet material 6 at a predetermined timing. Then, the drum 1 is charged by the charger 12.
The image on 1 is transferred to a sheet material 6, and further, the sheet material 6 is separated from the tram 11 by a separation charger 13, conveyed by a conveyance section 15 to a fixing section 16, and fixed by this fixing section 16.

Then, the sheet material (3) on which a single image is copied on one side is ejected by the ejecting roller 17.

Further, when most of the sheet material 6 on which a double-sided image is to be copied is discharged by the paper discharge roller 17, the paper discharge roller 17 is reversed and guided downward by the flapper 19.
The signal is sent to the multiplex bus 20.

Further, a sheet material 6 on which a single-sided multiple image is to be copied is sent to a double-sided/multiplex bus 20 by a flapper 19 .

Then, the sheet material 6 on which double-sided multiple images and single-sided multiple images are to be copied is sent through a pair of guide plates 21 and 22 to the registration roller IO again by the paper refeed roller 23, and a predetermined copying operation is performed. .

Next, the configuration of the relationship between manual sheet feeding from the front and sheet material conveyance for double-sided and multiplexing, which constitutes the essential part of the present invention, will be explained with reference to FIGS. 1 and 4.

Reference numerals 21 and 22 denote a pair of rectangular upper and lower guide plates as explained in FIG. Further, 26 is a manual tray guide, which is fixed to the main body so that its surface is flush with that of the manual tray 3 (see FIG. 2). Following this manual tray guide 26, a lower guide 27 is fixed to the main body, and an upper kite 29 is fixed above this lower guide 27, respectively. In addition, the f-insertion tray guide 26 and the lower guide I/2
7, a pressure arm 31 is pivotally supported on a bottle 30 fixed to the main body, and as shown in FIG. A driven manual feed roller 33 that is urged upward is attached to the back side of this pressure arm 31, and the guide plate 22 is attached to the back end of the pressure arm 31. A push-up piece 35 is provided to push up the temperature. Further, a paper refeed conveyance drive roller 36 is provided on the main body so as to be rotatable about a longitudinal axis, and is turned on and off via a clutch from a drive source (not shown). A hole 37 is provided that passes through the paper refeed conveyance drive roller 36 or the guide plate 22, and a paper refeed conveyance driven roller 39 facing above the drive roller 36 is formed integrally with a shaft 40. Both ends of the shaft 40 are guided into vertically elongated holes 42 of a racket 41 fixed to the guide plate 21, and the shaft 40, that is, the driven roller 39, is biased downward by a tension spring 43, and the roller A hole 45 passing through the guide plate 21 by 39 degrees is provided in the guide plate 21. Further, a roller release arm 46 having a locking portion below the shaft 40 is pivotally supported by a pin 47 fixed to the guide plate 21, and the other end 46a of this arm 46 is attached to a protrusion 49 fixed to the main body. It is designed to be locked on the bottom side.

Further, a manual feed drive roller 50 is rotatably attached to the above-mentioned upper guide 29 by penetrating the guide downward and is rotated by a pulse motor (not shown) or the like, so as to face the manual feed roller 331. It has become.

Note that a reference guide 57 for the manual sheet material 6 is formed perpendicularly to the right side of the manual feed guide 26.

Next, to explain the structure of the regulating means for regulating the direction of manual paper feeding, the front end of the guide plate 21 is bent upward at a substantially right angle to form a shutter member 51, and the sheet 1-6 is When it hits the member 51, the sheet material 6
A sensor lever 52 is provided on the shutter member 51 that comes into contact with the end thereof, and a photo interrupter 53 or sensor lever 52 that is detected by this sensor lever 52 is provided as a pair, and the rear end of the manually fed sheet material 6 is attached to the upper guide 29. A sensor lever 55 and its photo interrupter 56 detect the
are provided as a set.

Note that, as shown in FIG. 4, the pair of manual paper feed rollers 33.
50 is provided in a region C through which the sheet material 6 passes when double-sided/multiple copying is performed.

The limit line of this area is indicated by a dashed line.

Next, the operation of manual paper feeding will be explained.

As shown in FIG. 4(a), when double-sided/multiple copying is being performed, the pressure arm 31 is supported at a position where the amount of eccentricity of the eccentric cam 32 is minimum and is lowered.
The left end of the guide plate 21, 22 supported by the push-up piece 35 provided at the rear end of ing. Further, in this position, the paper refeed conveyance rollers 33 and 36 normally perform the paper refeed operation. That is, due to double-sided/multiple copying, the manual feed rollers 33, 50 located in the area C through which the sheets 1 to 6 pass do not interfere with the sheet 6 that is being re-fed.

In the above state, after confirming that duplex/multiple copying is not activated, the operator aligns the sheet material 6 from the manual paper feed slot 2 along the reference guide 57, and then moves the sheet material 6 through the shutter material 51.
Insert it in the direction of the arrow until it hits the button, and press the button (not shown) to start manual feeding.

Next, in response to this signal, the control section (not shown) rotates the eccentric cam approximately 180 degrees, and when the pressure arm 31 is raised, the guide plate 21.2 is moved by the push-up piece 35 (see FIG. 1).
2 rotates upward around the pin 25, and the guide plate 22
The pressurizing arm 31 is held so that the upper surface is held slightly lower than the upper surface of the lower guide 27 (at this time, the paper refeed conveyance rollers 36 are all located below the upper surface of the guide plate 22, including the one at the back). and the dimensions of the eccentric cam 32 are set.)
The manual paper feed roller 33 is pressed against the manual paper feed drive roller 50 by an upward biasing force via the manual sheet material 6 that was in contact with the shutter member 51, and the shutter member 51 is pushed upward toward the guide plate 21. evacuate with. At the same time, the other end 46a of the roller release arm 46
9 , the rear side of the roller release arm 46 moves upward, and the shaft 40 is lifted up against the downward biasing force of the tension spring 43 , and the paper refeeding conveyance driven roller 39 moves toward the guide plate 22 . Retract above the bottom surface of the

A signal is issued when the eccentric cam 32 completes rotation of approximately 180 degrees, and upon receiving this signal, the control unit drives the manual feed roller 50 to feed the manual sheet material 6 toward the back side at a predetermined speed. Transport towards.

Next, after the rear end of the sheet material 6 is detected by the sensor beam and interrupters 55 and 56, the manual paper feed rollers 33 and 50 stop after being conveyed a predetermined amount. Due to this movement, the rear end of the sheet material 6 matches the limit line of the area C described above.

Next, upon receiving the signal that the drive source for driving the manual feed drive roller 50 has stopped, the control section turns on the drive source for the eccentric cam 32 and rotates it approximately 180 degrees, as shown in FIG. 4(c). The pressurizing arm 31 descends and returns to the state described in FIG. 4(a). However, the sheet 6 is held between the paper refeed conveyance rollers 36 and 39.

Next, upon receiving the signal that the drive source of the eccentric cam 32 has stopped, the control section drives the paper refeed conveyance rollers 36 and 39 to convey the manual sheet material 6 in a direction perpendicular to the manual feed direction (in the direction of arrow B). Then, the image forming area (drum 1
1. (an area such as the fixing unit 16).

Next, another embodiment will be described with reference to FIG.

Members with the same configuration and function are designated by the same reference numerals, and redundant explanation will be omitted.

The difference from FIG. 1, which describes the above embodiment, is that the roller release arm 46 is deformed, and a locking arm 60 that engages the shaft 40 from below extends left and right, and a protrusion fixed to the main body is provided. The piece 49 is removed, and the other end 46a that engages with the protruding piece 49 is also removed.

Further, the pressurizing arm 31 is extended, and the engaging arm 60
It is designed to engage from the bottom (m).

By doing this, the pressurizing arm 31 is connected to the guide plate 21.
22, the roller release arm 46 can be locked by the tip of the extended pressure arm 31 and lifted around the pin 47, enabling the same effect as in the previous embodiment.

In the above embodiment, the home positions of the guide plates 21, 22 shown in FIGS. 4(a) and 4(c) were set below the manual tray guide 26, but on the contrary, the home positions of the guide plates 21, 22 were set above the pressurizing arm 31. Move the pin 30° eccentric cam 32, etc. above the manual feed tray guide 26, and move the manual feed rollers 33, 5
By reversing 0 to -F downward, the guide plate 21 is lowered to take the position shown in FIG. 4(b). Also,
For this purpose, the paper refeeding rollers 36 and 39 are also rotated upside down and reversed, so that the sheet material 6 can be manually fed in the same way as in the previous embodiment.

Further, in the embodiment described above, the guide plates 21 and 22 are urged downward or are in pressure contact with the pressure arm 31, so that they do not wobble due to vibration or the like. In this example,
On the contrary, the guide plates 21 and 22 may be biased in one direction, and the guide plates 2 and 22 may be in pressure contact with the pressure arm 31 provided above.

Still another embodiment will be described with reference to FIG.

In this embodiment, the guide plates 21.22 are provided separately rather than in one piece, and the bins 63.65 are connected via parallel links 61.62.
By pivotally supporting the parallel links 61 and 62, the eccentric cam 32 and the pressure arm 31 of the above embodiment are
This replaces the lifting and lowering operation of the guide plates 21 and 22. In this case, as in the embodiment described above, it is possible to pressurize and release the pressure on the paper refeed conveyance driven roller in the same manner as described above. In this embodiment, each of the guide plates 21 and 22 is pivotally supported by the links 61 and 62, but the guide plates 21 and 22 may be integrally supported by one of the pins 63 or 65.

(G) As described in detail, according to the present invention, one of the conveyance paths (two
6) to sea 1 through guide plates (21) and (22).
) by the sheet material conveying means (50), (33), the guide plates (21), (22) move to the driving means (31).
), (32), the sheet material (6) in the guide plates (21), (22) is moved to another conveyance path (20) orthogonal to the sheet material (6).
is conveyed to the other conveyance path (20) by the sheet material conveyance means (36), (3), so that two conveyance paths in the same direction are switched from one to the other. Since there is no need for space for two conveyor paths to overlap,
1. Space saving: n space can be saved, that is, the device can be configured in a small size.

In addition, for example, in a double-sided, multiple copying machine, etc., if a manual paper feed transport path (26) is provided orthogonal to a part of the paper re-feed transport path and the present invention is applied, the paper re-feed transport path (20) is placed at the front. Since it is shared as a manual feed conveyance path, the space inside the device can be greatly reduced, and the installation space of the copying machine can be significantly reduced compared to the conventional site manual feed copying machine.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the guide plate and its surroundings according to an embodiment of the present invention, FIG. 2 is a perspective view of a copying machine embodying the present invention, FIG. 3 is a longitudinal sectional front view of FIG. - An explanatory diagram of the operation of the plate, Fig. 5 is a perspective view of the guide handling area of another embodiment, Fig. 6 is a side view showing the guide plate of yet another embodiment, and Fig. 7 is a conventional manual paper feeder. FIG. 2 is an explanatory diagram (vertical front view) of a side paper feeding type copying machine. Fig. 2 6... Sea] Village, 20... Other conveyance path (double-sided/multiple bus), 21. 22... Guide plate 26... One conveyance path (manual tray guide), 31
．． 32... Guide plate driving means (pressure arm, eccentric cam), 50, 33, 36.39... Sea l-
Material conveyance means (manual paper feed drive roller, manual paper feed roller, paper refeed transport drive roller, paper refeed transport roller) Fig. 4 (a) (b) Fig.

Claims (1)

[Claims] 1. It has two conveyance paths for sheet materials located on different planes and orthogonal to each other, and at the intersection of the two conveyance paths, between the two conveyance paths. a pair of guide plates for moving the sheets, further comprising a guide plate driving means for moving the guide plates from one of the two conveyance paths to the other and from the other to one; A sheet material conveying device comprising: a sheet material conveying means that changes the direction of the material and conveys the material;