JPS5968758A - Paper feeding device - Google Patents

Abstract

PURPOSE:To simplify the constitution, reduce the cost and miniaturize the size of a paper feeding device, by using a feed roll having a cross section of a circular form, from which a part is cut off, and feeding in an alternative way copying papers contained in a paper cassette and those fed by hands. CONSTITUTION:When copying is performed onto copying papers 3 contained in a paper cassette 2, a start button is pressed. A feed roll 1 is rotated in the direction of the arrow and the arc-part of its rubber belt 24 pressure-contacts with the copying paper 3, and then, the copying paper 3 is delivered from the paper cassette 2. When copying is made onto a copying paper 8 having a different size while the paper cassette 2 is mounted, the paper 8 is put into an inserting port 10 by hands and fed to the space between rolls 1 and 31 through a main chute 25, etc. Since the recessed part 22 of the roll 1 faces to the roll 31, the leading edge of the paper 8 can be put smoothly into the space between the rubber belt 24 and roll 31. Therefore, the constitution can be simplified, the cost can be reduced, and the size can be miniaturized.

Description

[Detailed description of the invention] The present invention relates to a paper feeding device for an electronic copying machine.

For example, an electronic copying machine that uses copy paper cut to a predetermined size such as 84 and 85 sizes uses a paper cassette to facilitate replacement with copy paper of a different size. Even when copying one or two sheets of paper of different sizes using such an electronic copying machine, it is troublesome if the paper cassette is replaced. Therefore, some conventional electronic copying machines are capable of copying onto copy sheets of different sizes with a paper cassette loaded.

FIG. 1 shows an example of a conventional paper feeding device for such an electronic copying machine. When performing normal copying with this electronic copying machine, a start button (not shown) is pressed. Then, the feed roller 1 rotates in the direction of the arrow, and the paper force l? The copy paper 3 stored in the rat 2 is sent out. Double feeding of the copy paper 3 is prevented by a claw member 4 that presses both ends of the copy paper 3. The fed-out copy paper 3 is fed between a register roller 6 and a pinch roller 7 via a paper guide 5, and is temporarily stopped there. When the register 1-ra 6 rotates in the direction of the arrow at a predetermined timing, the copy paper 3 is sent to a recording section (not shown) and copied. On the other hand, when copying on copy paper 8 of size W with paper strength sets 1 and 2 loaded, 1. Insert this into the manual insertion slot 10 installed ('J) on the copying sill 9, and slide it between the dowel roller 12 and the pinch roller 13 through the screws.At this time, insert the J, the microphone [l main"f'I 71 is switched depending on the copied paper 8. When the microphone 1-1 switch 1/I is turned on, the drive roller 12 begins to rotate in the direction of the arrow.Then, the copy paper 8 passes through the paper guide 15 and moves to the register roller 6. Pinch [sent between 21 and 7,
Here -['' is stopped.

The following is the same as in the normal case described above.However, in this J:Una paper feeder, -Feed "21-Ra1 etc. are separately provided with a drive[]-Ra12\i", so The structure is complicated and expensive, the number of parts is large, the loss is 1 to 1, and it is difficult to miniaturize.

The present invention has been made in view of these circumstances.
Simplification of configuration and low cost: Providing a paper feeding device that can be made smaller and smaller.

In the present invention, a feed []-ra whose cross section is a cutout of a part of a circle is used, and it is used to feed the copy paper stored in the paper pressurizer 1~ with the copy paper of -shi]. II! - To achieve two objectives, as described above.

Hereinafter, the present invention will be explained in detail with reference to 1. Example 3 (2).

Figure 2 shows an embodiment of the present invention. It represents C. In this figure, parts with the same names as those in FIG. 1 are denoted by the same reference numerals.

The foot [1-ra'1 of this installation jr1'' has a [1-ra body 23 whose cross section is a part of a circle cut out and a recess 22 adjacent to the notch 21, and this foot [1-ra'1]. day-
rubber bells 1 to 24 provided on the outer periphery of the main body 23. Roshe's Iho 23 is made with a plus deck. The rubber bell 1 is tensioned 24, so that the recess 22 is hollow. When this device is in a stopped state, the Neudor 1 is stopped at the position shown in FIG. 1, that is, the notch 21 is the copy paper 3 stored in the paper cassette 2.
By being in a position opposite to the feed r]-ra1
is 1 time from copy paper 3.

=Cases 1-1 to 11 are composed of a main sear r-1-25 and one bushicos 1 to 26. main sea 1
-1 to 255 consist of an upper root and a lower root, and the tip thereof is located near the recess 22 of the feed roller 1 in the stopped F state. Bearings 27 are formed on both sides of the tips of the lower roots of the main roots 1 to 25). Liebsicot 1 to 26
As shown in FIG.
At 7, the rotary automatic A1 is investigated () -C.

A notch 29 is formed at the tip of each feed 1 cola 1 at a location corresponding to and covering the feed 1 cola 1, and approximately C-shaped bearings 30 are formed on both sides of this notch 29. A roller 31 is rotatably mounted on the bearing 30. A torsion coil spring 32 is mounted on the shaft 28;
My eyes are blown-C. Torsion] By the force of the coil spring 32, the subcoat 26 is urged in the direction of the hour in Fig. 24, and the roller 31 is in a stopped state. -24 is pressed.

When copying on the copy paper 3 stored in the paper tray 1-2, a start button (not shown) is pressed. Then the feed roller 1 begins to rotate in the direction of the arrow. At this time[
The I-ra 31 is pushed by the feed roller 1, and the Zabushiko-1-26 rotates counterclockwise in FIG. 2 against the force of the torsion coil spring 32, causing the rotation of the feed roller 1 to I'm sorry.

The feed roller 1 rotates in the direction of the arrow, and the rubber bell 1
When the circular arc portions 1 to 24 come into pressure contact with the copy paper 3, the copy paper 3 is sent out from the paper pressurizers 1 and 2, as shown in FIG. The fed-out copy paper 3 is stopped at the register [1-ra 6].

The feed roller 1 stops after one revolution.

On the other hand, when copying paper 8 of a different size with the paper cassette 2 loaded, insert it into the manual insertion slot 1.
0, and insert it between the feed roller 1 and the feed roller 31 via the main feed roller 1-25 and the knob chute 26. At this time, feet [1 - concave part 2 of la 1
2 is 1] ~ U 31 is facing one side -, so 24 is bent to one side of this part 1 J, S, Copy paper 8
The tip of Qv1: is inserted between rubber bells 1 to 21 and [-1-ra 31 relatively snugly, -su l! can be done. At this time, the microphone switch 14 is switched by the copy paper 8 inserted. When the microphone [1 switch-1/I is turned on and a predetermined period of time has elapsed,
The feed roller 1 begins to rotate in the direction of the arrow, and the copy paper ε
3 sending out 1) is started.

When the circular arc portion 24 to the rubber bell 1 of the feed roller 1 is in contact with the copy paper 33 stored in the paper cassette 2, a Copy paper 8 is being sent. This lζ paper curry 1
7. + The sheet 33 is not fed out. When the feed 1 to the roller 1 further rotate in the direction of the arrow, as shown in FIG. It will be temporarily stopped at Coke 6.

The foot roller 1 stops after one rotation J.

Here, as shown in FIG. 5, the circular arc portions of rubber bells 1 to 2/4 of the feed roller 1 begin to face the copy sheets 3 stored in the paper pressurizers 1 and 2 (J1 copy The leading edge of the paper 8 is located a distance - if!Y behind the leading edge of the copying paper 3. Therefore, the copying paper 33 is sent out an additional distance T than the copying paper 8.

Therefore, as shown in FIG. 4, the paper guide 5 is designed to absorb the excess amount. In this case, it is possible to make the timings at which the registers E1-6 start rotating at the same time. Also, double 17 paper 3)
When sending out the register, the timing at which the register starts to turn from U6 to D11 is set by a distance corresponding to -1- (you may also set it to BR!).

In the above embodiment, the recess 22 is provided in the noid roller 1.
-1, but this (L is not necessary.Also, it is made with feed [1-La 1 of Plus Deck 1]-La main body 23 and rubber bells 1 to 24, but it is limited to this) Instead, it may be made entirely of rubber.

Further, in the above embodiment, the roller 31 is attached to the 1-piece 1-toe 26.
Set up (J, feed this and put it in pressure contact with the cola 1), but this is not necessary. You may also make it so that it is zero.

As explained above, according to the present invention, it is possible to selectively feed the copy paper stored in the paper feed roller 1 and the manually fed copy paper using the feed roller, thereby simplifying the configuration. It is possible to achieve low second stroke and miniaturization.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an example of a conventional paper feeding device; FIG. 2 is a front view showing a paper feeding device according to an embodiment of the present invention; FIG. 3 is a perspective view of a portion of the same device β; FIGS. 4 to 6 are diagrams shown to explain and explain the operation of the device. 1...Feed "I-ra" 2...Paper cassette 3.8...Multiple '5' paper 10...Manual feed slot 11... ...Chute 21...Notch = 8-2/'l...-rl\Bell 1~25...
・・・Main System J-1～26・・・・・・31・・・・・・I]-La Application Person TF(+Iintux Co., Ltd. 1 Attorney Attorney+111 1 u 7.11 Figure 3 Figure 4 Figure 5 Atsushi 6 Atsushi L

Claims (1)

[Claims] This main roller has a cross section with a cutout of a part of a circle and has an arcuate portion that feeds the copy paper stored in the paper feeder 1~, and a main chute that feeds the copy paper manually fed to this feed roller. It is equipped with a sub-chute that is rotatably installed at the tip of the chute and a force member that presses this sub-chute against the feed roller, and when stopped, the feed roller is stored in the paper cassette by the action of the notch. When the manually fed copy paper is fed in, the leading edge of the paper is separated from the copy paper that has been fed [
1-A paper feeding device characterized in that the paper is fed between a notch and a sub chute.