JPH02213858A - Paper feeding pedestal for copying machine - Google Patents

Abstract

PURPOSE:To additionally place an arbitrary number of paper feeding pedestals only by superposing them within the height range where the paper feeding pedestals are easy to be used by providing a leg receiver where the leg of a copying machine main body is placed in the top corner of a flat enclosure provided with a feeding means which can feed a recording paper from a feeding cassette and providing the same type of leg receiver on the bottom corner. CONSTITUTION:A paper receiving port 112 is provided on the rear surface of the flat enclosure 110 similar to the rear surface of the copying machine main body 10 and communicated with the paper ejecting port 111, which is positioned below the port 112, on the front surface of the flat enclosure 110. Additionally, the leg receiver 113 where the leg 11 of the copying machine main body 10 is placed on the top corner of each flat enclosure 110, and the same type of leg 114 as the leg 11, is provided on the bottom corner. Thus, a required number of flat enclosures 110 can be superposed by placing the lower leg 114 on the leg receiver 113 lower flat enclosure 110. Therefore, it is possible to obtain the arbitrary number of paper feeding pedestals only by superposing them.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feed rack for a copying machine that can be stacked in multiple stages.

[Conventional technology]

Generally, a paper feeding device used in a copying machine supplies recording paper of the size necessary to transfer a toner image formed on an image forming body (for example, a photosensitive drum) to the transfer section at the appropriate timing. It is. The size of this recording paper is A3B4 even if it is a general purpose paper. There are many such as A4, 85, etc.
It would be desirable if multiple paper cassettes containing recording paper of all sizes could be set in the copying machine at the same time, since this would eliminate the need to replace paper cassettes, but the size of the copying machine Due to restrictions, there was a limit to the number of paper feed cassettes that could be installed in the main unit itself.

Therefore, recently, it has been considered and put into practical use to add a paper feeder using the upper space of the stand on which the main body of the copying apparatus is placed.

[Problem to be solved by the invention]

However, even if you add a paper feeder to the pedestal side,
Usually, there is only one unit, and there is a limit to how many units can be added.

In view of the above-mentioned points, it is an object of the present invention to provide a paper feed mount for a copying machine, which allows an arbitrary number of stages of paper feed devices to be added by simply stacking the paper feed devices.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a flat casing equipped with a removable paper feeding cassette and a feeding means capable of separating and feeding recording sheets one by one from the paper feeding cassette. A paper outlet communicating with the above-mentioned feeding means and a paper receptacle communicating with the paper outlet are provided on the lower surface thereof, and a leg holder on which the legs of the copying machine main body are placed is provided on the corner of the upper surface, and a main body of the copying machine is provided on the corner of the lower surface. It is configured so that it can be stacked in any number of tiers by providing common legs for each.In this case, it is possible to drive the delivery means of the paper feed pedestal by its own drive source, but the copying machine itself and the feed It is preferable that the paper mounts and the paper feed mounts be gear-coupled with each other when stacked one on top of the other, so that a common driving source can be used, and that they can all be controlled by a CPU mounted on the copying machine main body.

〔Example〕

Next, the present invention will be described based on an embodiment shown in the accompanying drawings.

Fig. 1 is a partially cutaway front view of the copying machine main body and the paper feed mount according to the present invention in a stacked state, Fig. 2 is an enlarged cross-sectional view showing the state in which the paper path between the copy machine main body and the paper feed mount according to the invention is connected, and Fig. 3 The figure is a perspective view of the paper feed racks of the present invention in a stacked state.

In the figure, 10 is the main body of the copying machine, and 100 is the paper feed mount according to the present invention. The copying machine main body 10 includes an optical section 20 in the upper part, and an image forming part 30 and a paper feed part 4o in the lower part.

The optical unit 20 illuminates the document on the document table glass 21 with a light source 22, and directs the reflected light from the document to a first mirror 23, a second mirror 24, a third mirror 25, a lens 26, and a fourth mirror 27. The image is formed on the upper surface of a photoreceptor drum 31 provided in the image forming section 30 by passing it through as shown in FIG.

The image forming section 30 includes a charging section 32, an exposing section 38, a developing section 33, and a transfer section that transfers a toner image onto a recording paper P fed from a paper feeding section 40 around the photosensitive drum 31. 34 and a cleaning section 35 for removing toner remaining on the photosensitive drum after transfer. The recording paper after being transferred by the transfer unit 34 is discharged onto a paper discharge tray 37 via a fixing unit 36.

The paper feeding unit 40 includes a paper feeding cassette 41 that can be pulled out from the front side, and a feeding means 42 that can feed recording paper P one sheet at a time from the paper feeding cassette 41. Paper cassette 4
1 is provided with a paper tray plate 43 at the bottom, and the top layer of recording paper P stacked on the top surface of the paper tray plate 43 is provided with a feeding means 42.
It is pushed up by a spring 44 so as to be pressed against the delivery roller 45 of.

The delivery roller 45 has a half-moon shape with a part of its circumference cut out, and can be rotated and stopped one rotation at a time counterclockwise by a one-rotation drive mechanism 70 with the circular portion facing upward as a base point. It has become.

At this base position, the long diameter side of the eccentric cam 451 fixed to the shaft 45' of the delivery roller 45 pushes the roller 43a, which is pivotally supported on the upper surface of one side edge of the plate 43, against the upward force of the spring 44. It's pushed down.

When the circular portion of the feeding roller 45 passes under the recording paper P on the plate 43 of the paper receiver, the topmost recording paper P is sent out by friction. In this case, the recording paper P climbs over the double-feed prevention claw 452 while being bent and is conveyed through the second paper feed roller 46 and the paper feed path 47 to the third paper feed roller 48, where it overlaps with the toner image on the photoreceptor drum 31. It is supplied to the transfer unit 34 at the appropriate timing.

The one-rotation drive mechanism 70 is constructed as shown in the third figure. That is, the shaft 45' of the delivery roller 45 and the adjacent shaft 71 are connected via gears 72, 73. This adjacent shaft 71 has a notched cam 7 provided with a notched step 74a at one location on the outer peripheral surface.
4, and a toothless gear 75 having a toothless portion 75a at one location on the outer peripheral surface is fixed. A drive gear 77 connected to a drive source 76 meshes with this partially toothed gear 75, but in the reference position where the circular portion of the delivery roller 45 faces upward, the partially toothed gear 75 is in mesh with the partially toothed gear 75.
The toothless portion 75a of No. 5 is stopped facing the drive gear 77. That is, this is because the hook 78 is locked to the notched step portion 74a of the notched cam 74 by the action of the spring 79.

When the hook 7 is pulled as shown by the chain double-dashed line by the action of the solenoid 80 and the notch stepped portion 74a is removed, the notched cammer 4 and the partially toothed gear 7 are pulled together by the pulling force of the spring member 81.
5 rotates in the direction of the arrow, causing the toothed portion of the partially toothed gear 75 to mesh with the drive gear 77. As a result, the toothless gear 75
rotation is started, and the power is transmitted from gear 73 to gear 72 to rotate delivery roller 45 in the delivery direction.

The solenoid 80 is turned off immediately after the hook 78 is removed from the notched step 74a of the notched cam 74 (after the toothed portion of the partially toothed gear 75 meshes with the drive gear 77). Therefore, the hook 78 is attached to the notch cam 74 by the action of the screw 79.
Since the delivery roller 45 makes one revolution and the notched step 74a of the notched cam 74 comes to the corresponding position, it is securely engaged with the notched step 74a. At this locking position, as described above, the toothless portion 75a of the toothless gear 75 and the drive gear 77 face each other,
Because they do not mesh, the delivery roller 45 and the eccentric cam 45
1 will stop immediately at that point.

Note that the second paper feed roller 46 and the third paper feed roller 48
The drive is transmitted from a gear 82 connected to the drive source 76 via an appropriate gear train (not shown), but it goes without saying that an independent drive source may be provided.

Reference numeral 49 denotes a paper receptacle provided on the lower surface of the copying machine main body 10, and the paper receptacle 49 communicates with the second paper feed roller 46.

Note that the function of the cough paper receptacle 49 will be described later.

Reference numeral 50 denotes a non-cassette type paper feeding section provided on the side surface of the main body 10 of the copying machine. The paper feed section 50 is located at the bottom of the fixed paper feed tray 51.
The paper tray whose tip side is pushed up by a spring 52 includes a plate 53,
The recording paper stacked thereon can be pressed against the delivery roller 54. The shape and function of the delivery roller 54 are the same as those described above, so the details will be omitted.
The recording paper sent out by the delivery roller 54 and passed through the second paper feeding roller 55 is fed into the paper feeding path 47 from the confluence point 56. Note that the drive source of the delivery roller 54 and the second paper feed roller 55 of the non-cassette type paper feed section 50 may be common to the drive source of the cassette type paper feed section 40 or may be independent.

The paper feed mount 100 of the present invention has a cassette type paper feed section 120 provided within a flat housing 110. The paper feed section 120 includes a paper feed cassette 121 that can be pulled out by grasping a handle 121a, similar to the paper feed section 40 of the copying machine main body 10, and a feed cassette 121 that can feed out recording sheets one by one from the paper feed cassette 121. A roller 122 is provided. A paper tray plate 123 is provided at the bottom of the paper feed cassette 121 . The recording paper P is placed on the plate 123 of the paper holder, with the width regulating plate 121b and the trailing edge regulating plate 121
They are stacked with their positions regulated at C. Further, the paper receiver is configured so that the recording paper P stacked on a plate 123 is pushed up by a spring 124 and brought into contact with a delivery roller 122 formed in a half-moon shape. The shape and function of this delivery roller 122 are the same as those of the cassette type paper feeding section 40 described above, and the details thereof will be omitted.

Thus, the recording paper P sent out by the sending roller 122
As shown by the two-dot chain arrow a in FIG. 111 and is introduced into the paper receptacle 49 on the bottom surface of the copying machine main body 10. The recording paper P introduced into the paper receptacle 49 is supplied from the second paper feed roller 46 of the paper feed section 40 of the copying machine main body 10 to the transfer section 34 via a path 47.

Further, a paper receptacle 112 is provided on the lower surface of the flat housing 110, similar to the lower surface of the copying machine main body 10, and communicates with a paper outlet 111 on the upper surface of the flat housing 110 located below.

2 and 5 at the upper corner of each flat housing 110.
As represented in the figure, a leg holder 113 on which the leg 11 of the copying machine main body 10 is placed is provided, and a leg support 113 is provided at the corner of the lower surface. Legs 114 are provided. Therefore, a plurality of flat housings 1
10 can be stacked in the required number of stages by placing the legs 114 on the lower surface on the leg supports 113 of the lower flat housing 110.

Note that the leg holder 113 shown here has a concave groove 113b in the center of a disc body 113a into which the leg 11 of the copying machine main body 10 and the leg 114 of the common flat housing 110 can be fitted. The leg rest may have a concave shape, and the leg rest may have a convex shape. In either case, if the legs and leg holders are made to fit together, they can also serve as a positioning device when the copying machine main body, the flat housing, and the flat housings are stacked together. In FIGS. 1 and 5, reference numeral 115 is a storage frame, and the lower surface is provided with casters 116, and the upper surface is provided with leg supports (not shown) similar to those described above.

The drive source for the delivery roller 122 inside the flat housing 110 is
Although it may be provided separately and independently from the copying machine main body 10, in this embodiment, the copying machine main body 10 is provided in a flat housing 1 as shown in the fourth figure.
10, the drive gear 7 inside the copying machine main body 10
6 through a gear train (not shown).
The connecting gear 84 exposed from the upper hole 110' of the flat housing 110 is engaged through the through hole 10' at the bottom of the copying machine main body 10, and receives power from the drive source 76. The connecting gear 84 is mounted on the tip of a rotating lever 86 that is rotatably supported on a fixed shaft 85, and a sun gear 87 that is freely rotatably supported on the fixed shaft 85 is connected to a planet. They fit together in a shape.

The rotating lever 86 is connected to the upper surface hole 110 by a spring member 88.
' is biased in a direction to expose the connecting gear 84. In this case, the protrusion 8 provided on the base side of the rotating lever 86
6a comes into contact with a stopper 89 to regulate its inclination angle. The purpose of this inclination angle is to make it easier for the connecting gear 84 to fall in a direction against the tensile force of the spring member 88 while meshing with the terminal gear 83 when the copying machine main body 10 is stacked on the flat housing 110. In other words, the connection gear 84 and the terminal gear 8
This is to ensure smooth engagement with 3.

The power transmitted from the terminal gear 83 to the connecting gear 84 is transmitted through the one-rotation drive mechanism 70 using the sun gear 87 as a drive source.
' is transmitted to the delivery roller 122.

The structure of the rotary drive mechanism 70' is the same as that shown in FIG. 3 as the one-rotation drive mechanism 70 in the copying machine main body 10. That is, the sun gear 87 normally faces the toothless portion 75a' on the outer peripheral surface of the toothless gear 75'. At this time, the hook 78' is attached to the notched stepped portion 74a' of the notched cam 74'.
It is locked by the action of 9'. However, the hook 78'
When the gear 75' is removed from the notch step 74a' by the action of the solenoid 80', the gear 75' rotates in the direction of the arrow along with the notch cam 74' due to the tensile force of the spring member 81'.
Since the toothed part 5' is meshed with the sun gear 87,
As a result, the partially toothed gear 75' starts rotating, and the power is transmitted from the gear 73' to the delivery roller 12 via the gear 72'.
2.

Reference numeral 83' denotes a terminal gear connected to the sun gear 87 via a gear train (not shown), which meshes with the connecting gear 84 exposed from the upper hole 110' of the lower flat housing 110 through the through hole 110'' on the bottom surface. This allows the power from the drive source 76 within the copying machine main body 10 to be transmitted sequentially to the lower parts.

In the above embodiment, the connection of the drive system when the copying machine main body, the present paper feed mount, and the paper feed mounts are overlapped was explained, but the signal system is also connected, and the CP mounted on the copy machine main body
U controls the timing of all mechanisms.

In the embodiment described above, if three of the paper feed racks 100 of the present invention on which the copying machine main body 10 is mounted are stacked on the storage rack 115 as shown in the figure, then the paper feed cassette of the paper feed section 40 of the copy machine main body 10 can be stacked. Including 4 (11 il) paper feed cassettes, that is, B4.A4.B5.A5 can be set.

〔Effect of the invention〕

As described above, the present invention is provided with a flat casing equipped with a removable paper feeding cassette and a feeding means that can separate and feed recording sheets one by one from the paper feeding cassette, and the feeding means is attached to the upper surface of the casing. A communicating paper outlet and a paper socket communicating with the paper outlet are provided on the bottom surface, and a leg holder for placing the legs of the copying machine main body is provided at the corner of the top surface, and a leg common with the copying machine main body is provided at the corner of the bottom surface. Since the sheet feed rack is characterized by having the sheet feed racks provided respectively, it has an excellent effect in that the sheet feed rack can be arbitrarily increased in any number of stages within the range of heights that are easy to use, just by stacking the sheet feed racks.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention; FIG. 1 is a partially cutaway front view of the copying machine main body and the paper feed mount according to the present invention stacked together; FIG. 2 is a paper path between the copy machine main body and the paper feed mount according to the invention. FIG. 3 is a perspective view of the one-rotation drive mechanism;
FIG. 4 is an explanatory diagram showing a state in which the drive system is connected, and FIG. 5 is a perspective view of the paper feed gantry according to the present invention in a state in which flat casings are stacked on top of each other. 10-copying machine main body 11, 114-legs 20-optical section 30-image forming section 40.50, 120-paper feeding section 41 12L--paper feeding cassette 42-feeding means 43 53.123-paper tray is a plate 44.52, 124 - Spring 45. 54. 122 - Outlet - La 46 55. 126 - Second paper feed roller 49. Paper feed path Third paper feed roller 1 1 2 - One paper socket 70' - One rotation drive mechanism One shaft Paper feed mount Flat casing Paper outlet leg holder

Claims (1)

[Claims] A flat housing is provided with a paper feed cassette that can be pulled out and a feeding means that can send out recording sheets one by one from the paper feeding cassette. A paper receptacle communicating with the paper outlet is provided, a leg holder for placing the legs of the copying machine main body is placed on the top corner, and a leg common to the copying machine main body is provided on the bottom corner. Copy machine paper feed stand.