JPS61174051A - Manual paper feeder - Google Patents

Abstract

PURPOSE:To make a manual paper feed guide plate detachable and vice versa in an easy manner, by installing an elastic plate, supporting the manual paper feed guide plate, in a recording device as well as installing a shaft pressing concave part in a support shaft end face of a paper feed guide plate piercing through this elastic plate, in case of a copying machine or the like. CONSTITUTION:A manual paper feed guide plate 9 unitizing a paper feed block 10 in one is engaged with support plates 8 at both sides by means of a symmetrical pair of pins 11 tightly attached outward each and supported free of rotation. And, to remove the paper feed guide plate 9, a top part of each pin 11 is pressed down whereby the paper feed guide plate 9 is bent inward each, and then each pin 11 is disengaged from these support plates 8. In this case, a V-shaped concave part 11a of the top part of the pin 11 makes the tip end of a pressing tool or the like stable, thus safety and accurate operations are performable. On the other hand, when the paper feed block 10 is reattached, it will do that if each pin 11 is pressed in an incline part 8a of the tip end between these support plates 8, these support plates 8 and the paper feed guide plate 9 are elastically deformed in the direction separated from each other, thus these pins 11 are engaged with these support plates 8, making them rotatable.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a manual paper feeding device for a recording device.
This invention relates to a manual paper feed device with an improved mounting structure for a manual paper feed guide plate.

[Conventional technology]

Recording devices such as copying machines and printers are generally configured so that sheet-like recording paper such as paper is supplied from outside the machine, images such as characters are transferred and recorded onto it, and the paper is taken out of the machine. .

Recording paper such as paper is usually stored in a special paper feed cassette made to suit the size and quality of paper that is frequently used, and is loaded into the recording device. The paper feed means automatically pulls out the paper sheets one by one from the cassette and supplies them into the machine. This automatic paper feeding method is suitable when you want to obtain a large number of copies of the same size and paper quality, but when you want to change the paper size and paper quality, even if the quantity is 1. There are many inconveniences, such as having to replace the entire cassette even if the cassette is large, and not being able to use non-standard sized paper that does not fit in the cassette. In addition to automatic paper feeding, many printers are now equipped with a manual paper feeding device that can manually feed t-1 sheets of recording paper of any size and quality.

This manual paper feed device is equipped with a manual paper feed guide plate that is pivoted to the side of the recording device and can be raised or lowered, and when automatically feeding paper using a paper feed cassette, it stands up and touches the side of the recording device. However, when it is rotated to a position where manual paper feeding is possible, the paper feeding function from the paper cassette is stopped and the recording paper inserted from the guide plate is inserted into the recording device. It is adapted to be introduced into the conveying section and undergo image transfer, and is designed to be extremely convenient for the user.

However, the shaft attachment part of the manual paper feed guide plate has a complicated structure that cannot be easily removed in conventional recording devices, so if a jam occurs in the conveyance part or in the case of maintenance, etc. The side part of the recording device cannot be easily opened, and a lot of effort and time is expended in attaching and detaching it.

[Problem that the invention seeks to solve]

The present invention provides a manual paper feeder that improves and simplifies the shaft support structure of the manual paper feed guide plate for the recording device, thereby making it easier to attach and detach the paper feeder, and at the same time reducing costs by reducing the number of members. It is intended to provide.

[Means for solving problems]

The present invention provides support shafts on both sides of a manual paper feed guide plate that are elastically movable in the axial direction, and further includes a holding plate that is attached to a side surface of a recording device and supports the support shafts. When the manual feed guide plate is detached, the support shaft is elastically retracted in the axial direction by pressing a recess provided at the top of the support shaft. When released from the retaining state with the retaining plate, and when mounted, both the support shaft and the retaining plate go through a process of pressing against each other and retracting, and then automatically return to the retained state due to elastic action. In a recording device equipped with a manual paper feed device, an elastic plate is provided to support a manual paper feed guide plate of the recording device, and a support shaft of the paper feed guide plate that passes through the elastic plate is provided. This is achieved by a manual sheet feeding device characterized by having a shaft pressing recess provided on the end face.

〔Example〕

An embodiment of the present invention is shown in FIGS. 1-3.

The figure shows a cross section of the paper feeding section of a recording device that has both automatic paper feeding and manual paper feeding functions to which the present invention is applied.
2 is a feed roller that takes the recording paper supplied from the outside into the device; 2 is a separating belt that separates duplicate recording paper into only one sheet and feeds it to the guide section 3; 4 is a belt that synchronizes the recording paper to the image transfer section. These roller groups are designed to act on the recording paper fed from either the paper feed cassette 6 or the manual paper feed guide section 7. Reference numeral 5 denotes a guide portion for recording paper to be carried out from another paper feed cassette (not shown).

7a and 7b are an upper guide plate and a lower guide plate, respectively, which form the manual paper feed guide section 7, and the upper guide plate 7a
is fixed at the illustrated position, whereas the lower guide plate 7b is provided so as to be slidable in the paper feeding direction.

Reference numeral 8 denotes a support plate formed by an elastic plate that is attached to both the left and right inner walls of the paper feed section, and 9 is a manual paper feed guide plate that is integrated with the paper feed tray 10 by screwing it. A pair of left and right support shafts 11 penetrate the support plate 8 from the inside, and by rotating the paper feed table 10 at a predetermined angle with respect to the recording device, it can occupy the position shown in FIG. 1 or 2. It looks like this. Note that, like the support plate 8, the manual paper feed guide plate 9 is also formed of a sheet metal or an elastic plate made of resin.

That is, in the first case (2), when the paper feed table 10 is stored in an upright position, the protrusion 9m of the paper feed guide plate 9 pulls the pin 12i fixed to the side surface of the lower guide plate 7b, and the lower guide plate 7b is slid in the opposite direction to the paper feeding direction, and as a result, the tip of the lower guide plate 7b occupies a position apart from the carry-out roller 1, and the carry-out roller 1 has no space in the paper feed cassette 6. This indicates that the leading edge of the recording paper is pressed and ready for automatic paper feeding.

From this state, when the paper feed table 10 is rotated in the direction of arrow A to the position shown in FIG.
is located on the extension line of the upper surface of the lower guide plate 7b, and at the same time, the protrusion 9b of the paper feed guide plate 9 presses the bin 12, thereby pushing out the lower guide plate 7b in the paper feeding direction.

Further, in conjunction with the 100 revolutions of the paper feed tray, the leading edge of the recording paper in the paper feeding force sector 6 separates from the carry-out roller 1 and replaces it, so that the leading edge of the lower guide plate 7b is moved by the pressure of the bin 12. It comes into contact with the delivery roller 1 and is switched to a state where manual paper feeding is possible.

That is, in FIG. 2, when the manual recording i11 is inserted into the guide section 7 from the base surface 10m of the paper feed table 10, it is sent to the image transfer section by the aforementioned nine roller group, while the paper feed cassette 6 is not used for recording. Paper delivery is suspended.

The paper feed tray 10 used in a manual paper feed device in this way
In the present invention, the manual paper feed guide plate 9, which is integrated with the paper guide plate 9, is removably attached to and supported by the support plate 8 by a shaft attachment structure as shown in FIG.

That is, the pair of left and right paper feed guide plates 9 are fixed outwardly and are engaged with and rotatably supported by the same pair of left and right support plates 8 by the pins 11, but the paper feed guide plates 9 are removed. By pressing the top of the bin 11, the paper feed guide plate 9 is elastically curved inward, and the pins 11 can be released from the support plate 8. In this case, the V-shaped recess 11m provided at the top of the pin 11 is effective in stabilizing the tip of the tool used during pressing, and the work can be performed safely and reliably. The paper feed guide plate 9 which has escaped from the support plate 8 returns from its curved state to the flat state as shown in the figure due to its elastic action. This work is a simple work that only requires the use of simple tools, so it can be easily done by one person.

On the other hand, when attaching the paper feed table 10 to the support plate 8 again, the pin 11 is press-fitted into the sloped part 8a at the tip of the support plate 8, and the paper feed tray with the support plate 8 and the bin 11 attached thereto is pressed. The guide plates 9 are elastically curved and deformed in opposite directions, and the bin 11 is again engaged with the support plate 8 and supported in a rotatable state. Therefore, the paper feed guide plate is configured so that it can be easily and quickly attached to and removed from the recording device without using any tools, so the conveyance section can be easily opened in the event of a recording paper jam or maintenance. Sufficient inspection and repairs can be carried out. Further, this configuration is advantageous in terms of reduction in the number of parts and simplification, as well as cost reduction.

[Effects of the Invention] According to the present invention, the work of attaching and detaching the paper feed guide plate of the manual paper feeder from the recording device is extremely simplified, and as a result, the paper feed conveyance section of the recording device can be easily opened during jam clearance and maintenance. It became possible to carry out sufficient repairs and inspections. Further, the present invention is useful not only for a manual paper feeder of a copying machine but also for, for example, an insertion stand for a sheet-like photosensitive material in a developing processing apparatus.

[Brief explanation of the drawing]

1 and 2 are cross-sectional views of a manual paper feeder according to the present invention. FIG. 3 is a BB sectional view showing the main parts.

Claims (2)

[Claims] (1) In a recording device equipped with a manual paper feed device, an elastic plate is provided to support the manual paper feed guide plate of the recording device, and a shaft pressing recess is provided on the end surface of the support shaft of the paper feed guide plate that penetrates the elastic plate. A manual paper feeding device characterized by being provided with. (2) The recess provided in the end face of the support shaft is fixed using a pressing member, and the paper feed guide plate is removed by bending the elastic plate. manual paper feeder.