JPS60244732A - Paper feeder - Google Patents

Abstract

PURPOSE:To facilitate recording paper jamming removal work and checking and repairing work, by providing a paper feeder in a recorder removably therefrom so as to disengage a second paper feed registering roller by the removal of the feeder. CONSTITUTION:When a crank layer 18 is turned, a driven roller 13b is pushed down by the cam 18a of the lever so that a registering roller 13 is put out of recording paper pinching and conveying operation, and a gap larger than the thickness of recording paper is formed to enable the removal of the paper. The registering roller 13 is separated from the body of a recorder 1 by pulling out a paper feeder 10, so that a space necessary for the removal of the paper is formed around the roller. As a result, the recording paper can be very easily and quickly removed if jammed, and normal checking work can be easily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feeding device that is additionally attached to a recording device.

[Prior art]

A common method for supplying recording paper to a recording apparatus is to place the recording paper in a paper supply cassette and load the paper supply cassette into the recording apparatus.

Normally, a plurality of paper feed cassettes are always attached to the recording apparatus according to the size of the recording paper, and are prepared so that the user can freely select and use the recording paper of the required size as necessary.

However, since the recording paper from either paper feed cassette is carried out from the paper feed cassette by the respective carry-out rollers, it is conveyed to the image forming section via a common registration roller. In the vicinity of the registration rollers, the recording paper conveyance paths are often concentrated and bent due to direction change, and therefore this is the location where jams are most likely to occur in the recording paper conveyance path.

Therefore, in order to remove the jammed recording paper, the pair of rollers that make up the registration rollers are normally configured so that they can be separated as necessary to release the recording paper from being pinched. As there are narrow slit-shaped guide members in front and behind the registration rollers, it is not easy to remove the deformed recording paper that has been pushed strongly into the conveyance path, and even if you use tweezers or the like, it will take a long time. The reality is that they are forced to put in a lot of effort.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a paper feed device for a recording apparatus using a paper feed cassette, which facilitates recording paper jam removal work and is convenient for repair and inspection.

[Structure of the invention]

The present invention provides a paper feeding device to which a plurality of paper feeding cassettes can be attached, and which has built-in common registration rollers and their driving source at the exit-2 of the plurality of paper feeding cassettes, to a recording apparatus. The device is removably installed, and is configured so that the recording paper is released from the recording paper by manually separating the registration rollers when it is attached and manually when it is removed. and a paper feeding device for feeding paper in alignment with an image forming section of an image carrier after once stopping recording paper by a second paper feeding means and transferring an image to the recording paper, the first feeding device The paper means and the second paper feeding means are integrally formed,
and is achieved by a paper feeding device which is capable of escaping outward from the main body of the recording device by means of a guide means, and wherein the paper feeding member of the second paper feeding device is displaced from the paper feeding device during the outward escape snoring. Ru.

〔Example〕

An embodiment of a paper feeding device according to the present invention is shown in FIGS. 1 to 5.

FIG. 1 shows the arrangement of the paper feed device IO installed in the recording device 1. The paper feed device 10 is installed in the recording device J at the position indicated by the two-dot chain line. Recording paper is taken out one by one from 11a or 11b and fed to the photosensitive drum 3 through the guide plate 2 in the recording apparatus, where it is erected to receive the toner image transfer thereon.

Therefore, as shown in FIG. 3, the paper feeding device IIc is provided with carrying out rollers 12a and 2b for each paper feeding cassette as a first paper feeding means for carrying out the recording paper from the paper feeding cassettes lla and llb. and further the unloading loaf 12a, 1
2b conveys the recording paper to the recording device 1 after synchronizing the timing and speed with the toner image.
Registration rollers 13 are provided as paper feeding means.

The carry-out rollers 12a, 12b and the registration roller 1
3 are all operated by a drive source (not shown) provided in the paper feeder IO, and the recording device 1
The structure is such that the drive is controlled in synchronization with each function.

Further, as shown in FIG. 2, which shows the main part in the direction of arrow A in FIG. It is possible to move in the direction of escape from the recording device 1 by being guided by a round bar-shaped guide rail 1a, and when it is separated from the recording device 1 to a predetermined position, it is moved by a restriction part (not shown).
It is constructed so that it will not be stopped, detached and separated.

In other words, fixing members 1b holding guide rails 1a (up and down gradient σ) are respectively attached to the left and right inner walls of the recording device J, and sliding members 1b are attached to the left and right outer walls of the paper feeder IO. The member 10a is the upper part 1 of the guide rail 1a.
Since the paper feeding device 10 is slidably fitted between the guide rails 1 and 1, the paper feeding device 10 can be easily moved manually, and the relative positional relationship with respect to the recording device IK is determined by the guide rail 1.
It is designed to be maintained accurately by a.

FIG. 3 shows the main parts of the paper feeding device 10. The registration roller 13 is composed of a drive roller 13a and a driven roller 13b which is a paper feeding member, and each of these rollers is shown in FIG. As shown in the figure, the drive roller 13a is supported by a pair of left and right substrates 16 via bearings 14 or 15 fitted to both shaft ends, and the drive roller 13a is fixed at a predetermined position on the substrates 16. , one shaft end thereof is connected to a drive source, and the driven roller 13b is supported along an elongated hole 16a provided on the substrate 16 so as to be slightly spaced apart from the driving roller 13a.

Furthermore, since both shaft ends of the driving roller 13a and the driven roller 13b are tightened by a pair of spring belts 17, both rollers receive a balanced pressing force over their entire length, allowing smooth gripping and conveyance of the recording paper. It is now being done.

Further, an L-shaped crank lever 18 is rotatably fitted to the bearings 15 fitted to the left and right shaft ends of the drive roller 13a, and is biased clockwise by a tension spring 19. It is stopped at the angle shown in the figure.

The crank lever 18 has a cam portion 18a used as a cam means in a portion thereof facing the driven roller 13b.
In the illustrated configuration, the cam portion 18a is positioned so as to be slightly spaced apart from the bearing 14 fitted to the left and right shaft ends of the driven roller 13b. ing.

On the other hand, each of the distal end portions 18b of the crank 18 is formed with a protrusion having an inclined surface 20a on the outside of the paper feeder 10, so that the paper feeder 10 can be used for recording as shown in FIG. When the apparatus 1 is pulled out and stopped, the rollers 6 pivoted on the left and right inner walls of the recording apparatus 1 shown in FIG. and press the crank lever 18.
It acts to rotate counterclockwise against the tension spring 19.

[l? of the crank lever 18] ] As a result of the movement, the cam portion 18a engages the driven roller 13b, and as a result, the gripping and conveying action of the recording paper by the registration roller 13 is released, and a gap larger than the thickness of the recording paper is opened, and the recording paper is removed. At the same time, the registration roller 13 itself is separated from the main body of the recording apparatus 10 by the skewer of the paper feeder 100, so that a space necessary for the removal work is created around it.

As a result, even if a recording paper jam occurs in the registration roller 13 of the paper feeder IO, the recording paper can be removed extremely easily and quickly, making it possible to resume copying work in a short time. In addition, such a paper feeding device [
0 is suitable for inspection and repair during normal times, and is effective in keeping the functions of the recording device in the best condition at all times because the maintenance is carried out in a similar manner.

When clearing a light jam and it is necessary to pull out the previous recording paper feeding device 1θ from the recording device 1, the corresponding recording paper feed device 1θ can be removed from the recording device 1. Immediately after opening the front door of the rack 1, rotate the support member 5 with the transfer pole 4a and the separation pole 41-+ attached by the rotation amount 15 as shown in Fig. 3.
When the support part 5 presses the tip 18b of the crank lever 18 and rotates it counterclockwise, the paper feeder IO is pulled and the paper feeder IO is pulled.
As in the case of 4th shift, the clamping and conveying action of the registration rollers 13 is released. Therefore, it is possible to handle a jam even when the paper feeder 10 is attached to the recording apparatus 1.

〔Effect of the invention〕

The present invention provides a paper feeding device that is equipped with a paper feeding power section and has a built-in recording paper conveying function, and is detachable from the recording device.
As a result, the second sheet feeding registration roller is automatically released by the above-mentioned attachment/detachment action.
It has become possible to provide a similar paper feeding device that is advantageous for handling paper jams and inspection and repair work.

4 Brief description of the drawings (Explanation) Figures 1, 2, and 5 are conceptual diagrams showing how the paper feeder of the present invention is attached to a recording apparatus. Figure 3 is a diagram of the main parts of the paper feeder. FIG. 4 is a sectional view of the registration roller along arrow AA.

1... Recording device fit la...
Guide rail 1b...Fixing member 6...
・・・・・・ Roll IO・・・・・・Paper feeding device 1
0a... Sliding member 11a, llb... Paper feed cassette 12a, 1.2b... Outgoing roller 13
......Registration roller 13a...
- Drive roller 13b...Followed four-roller 18.
...... Crank lever 18a...Cam part Addition...Protrusion part 20a...Slope agent Patent attorney Field 1) Parent-in-law

Claims (1)

[Claims] (]) A first paper feeding means that feeds the recording paper, and a second paper feeding means that once stops the recording paper and then feeds the recording paper in alignment with the image forming section of the image carrier. The first sheet feeding means and the second sheet feeding means are integrally formed in the sheet feeding device for transferring an image onto the recording paper, and the sheet feeding device is configured to be able to escape outward from the recording device body by means of a guide means. None, a paper feeding device characterized in that the paper feeding member of the second paper feeding means is displaced from the paper feeding position at the time of the outward escape '%'F. (2) Displacement of the paper feeding member from the paper feeding position 2. The paper feeding device according to claim 1, wherein the means for causing the feeding is a cam means.