JPH021286Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a paper feeding device for a copying machine.

[Conventional technology]

In a copying machine, a paper feed cassette containing copy materials is attached to the copying machine main body, and the copy materials are automatically sent one by one to a copying process by a paper feeding device. In this case, if you want to use copy material with dimensions different from those in the paper cassette, you must remove the paper cassette that is already installed and install another paper cassette containing copy material of the required size. Must be. In such cases, it is common practice to manually insert the copying material into the copying machine to perform the copying process.

FIG. 3 is a sectional view showing a conventional manual paper feeding mechanism. As shown in the figure, the conventional paper feeding device has an automatic paper feeding path X that feeds paper using a paper feeding cassette 1.
and a manual paper feed path Y for feeding paper using the manual paper feed table 2 are formed separately, which increases the number of parts and causes problems such as an increase in assembly time and an increase in the defective rate of products. There was a drawback that the entire device became larger as the problem occurred.

In order to solve these drawbacks, a system has been proposed in which the automatic paper feed path and the manual paper feed path are shared, and paper is fed from the top surface of the paper feed cassette 1, as shown in FIG. However, in the case of such a paper feeding device, the separating claw 3, which is attached to the paper feeding cassette 1 and is provided to feed the copy materials in the paper feeding cassette 1 one by one, A problem has arisen in that the copy material 4 fed manually from the top of the paper feed cassette 1 gets stuck in the separation claw 3, making it impossible to manually feed the copy material.

[Problem that the invention attempts to solve]

The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a paper feeding device that can smoothly perform manual paper feeding in a copying machine that uses a common path for manual paper feeding and automatic paper feeding. purpose.

In order to achieve the above-mentioned object, the present invention provides a guide plate above the paper feed cassette, and when manually feeding paper, the guide plate covers the separation claw of the paper feed cassette, so that the copy material is not stuck to the separation claw. This allows the paper to be fed without any problems.

〔Example〕

1 and 2 are cross-sectional views of a paper feeding device showing an embodiment of the present invention. In this figure, parts given the same reference numerals as in FIGS. 3 and 4 indicate the same or corresponding parts.

Reference numeral 1 denotes a paper feed cassette in which copy materials P are stacked and stored on an intermediate plate 6 which is held in an upward direction by a spring 5. Reference numeral 3 denotes a separating claw fixed to the paper feed cassette 1, which is disposed at the leading edge of the copy material P in the paper feeding direction, and positions the leading edge of the copy material P in the feeding direction.
This separates copy materials one by one during feeding. In the case of manual paper feeding, a lid 7 that also serves as a manual paper feed tray is attached to the top of the paper cassette 1 in a removable manner and movable in the direction of the arrow, and the copy material P' is fed from the top of the lid 7. I'm starting to be able to do it. The paper feeding device of this embodiment has stepped portions A and B at one end above the paper feeding cassette 1 described above, and the other end has a sufficient length to cover the separating claw 3 during rotation. A guide plate 8 is attached to the main body of the copying machine and is configured to rotate around a fulcrum 9. A feeding roller 10 feeds the copy material to the registration rollers 11. The guide plate 8 is provided with a slit or the like so that rotation of the feed roller 10 is not hindered. Reference numeral 12 denotes a paper feed roller for manual paper feeding, which is attached to the main body of the copying machine above the lid 7, and is used to feed copying material when manually feeding paper from the top surface of the lid 7. At this time, the registration rollers 11 are retracted so as not to come into contact with the copy material, thereby ensuring a paper feeding path for the copy material.

As mentioned above, since the guide plate 8 rotates around the fulcrum 9, the step A or B formed on the guide plate 8 and the tip 7 of the cover 7 are caused by the movement of the cover 7 on the paper feed cassette 1.
The rotation of the guide plate 8 is restricted by contact with the guide plate a.

[Effect]

Next, the operation of this embodiment will be explained.

FIG. 1 shows the state of automatic paper feeding by the paper feed cassette 1. At this time, the tip 7 of the lid 7
a is in contact with the stepped portion A of the guide plate 8, so there is a gap between the other end of the guide plate 8 and the separating claw 3. At this time, the copy materials P in the paper feed cassette 1 are fed one by one to the registration rollers 11 by the feed roller 10 and the separating claw 3.

Although FIG. 2 shows a manual paper feeding state, manual paper feeding according to the present invention is performed by sliding the lid 7 in the direction of the arrow opposite to the feeding direction.

First, by sliding the lid 7, the contact between the tip 7a and the stepped portion A formed at one end of the guide plate 8 is released;
The tip 7a and the stepped portion B of the guide plate 8 are brought into contact with each other. Therefore, the guide plate 8 rotates about the fulcrum 9 in the direction of the arrow, and the other end of the guide plate 8 is placed over the upper surface of the separating claw 3. Therefore, even if the copy material P is fed from the top surface of the lid 7, the copy material P is fed to the registration roller 11 through the top surface of the guide plate 8, so that the copy material does not get stuck on the separating claw 3. do not have.

Note that the present invention is not limited to the above-mentioned embodiments, and various changes can be made without departing from the gist of the present invention.

[Effect of idea]

As described above, in the present invention, a guide plate that engages with the cover of the paper feed cassette is provided above the paper feed cassette, and by rotating the guide plate, the separating claw of the paper feed cassette is covered. Paper can be fed smoothly without the copy material getting caught in the separation claw during paper feeding.

Furthermore, by sliding the lid outward, a longer space can be provided for the manual feed guide, which has the effect of making it easier to feed manual paper.

Therefore, the paper feeding device according to the present invention uses a common path for automatic paper feeding and manual paper feeding, and enables smooth paper feeding, reducing the number of parts, reducing assembly time, and making the copying machine more compact. It has remarkable effects such as oxidation.

[Brief explanation of the drawing]

1 and 2 are sectional views showing an embodiment of the paper feeding device of the present invention, with FIG. 1 showing the automatic paper feeding state and FIG. 2 showing the manual paper feeding state. FIGS. 3 and 4 are cross-sectional views showing a conventional paper feeding device. 1... Paper feed cassette, 3... Separation claw, 7... Lid,
8...Information board.

Claims (1)

[Scope of utility model registration request] A paper feed cassette, a lid provided on the top of the paper feed cassette and serving as a movable manual paper feed member, and a feed roller attached to the main body of the copying machine that feeds the copy material in the paper feed cassette. In the automatic paper feeder, a guide plate having a fulcrum above the paper feed cassette, one end extending to the separating claw position of the paper feed cassette, and a stepped portion formed at the other end is attached to the copying machine main body, An automatic paper feeding device characterized in that manual paper feeding or automatic paper feeding is selected by rotating the guide plate by moving the lid.