JPH03128830A - Manual type sheet feed device - Google Patents

Abstract

PURPOSE:To obtain favorable handling pressure all the time by forming a sheet handling body out of an elastic material. CONSTITUTION:When large raising pressure is applied to a submerged piece 13 which is equipped with a sheet feed cassette, and which is submerged under a cassette sheet feed roller 10, a sheet handling body 12 is made to come into heavy pressure contact with the cassette sheet feed roller 10. It is thus impossible to make sheet not fed because raising pressure A is divided into C and D at the time of handling hand feed sheet 5 to be by action of a leaf spring material 21 whose base edge part is fixed on a beam part 201 of a sheet holding plate 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a manual paper feeding device that can stack a large number of sheets and is suitable for use in an image forming apparatus such as a copying machine.

[Prior Art 1] A general manual paper feeding device of this type is shown in FIGS. 7 to 9. In the figure, ■ is a tilting paper feed tray, and 2 is a plate that slides in the front and rear directions in conjunction with the tilting paper feed tray l.

When the paper tray 2 is raised with the tilting paper feed tray 1 centered on the support shaft 3, the proximal end hook portion 2a is moored by the mooring portion 1a of the tiltable paper feed tray 1, and the paper tray moves backward as shown in the seventh figure. On the other hand, when the raising/lowering feeding tray 1 is tilted down as shown in FIG. 8, it is pushed forward by the pressing portion 1b. During this forward movement, the paper tray plate 2 becomes the same inclined surface as the folding paper feeding tray 1.

4 is a leading end regulating step against which the leading end of the manual paper 5 is brought into contact;
The stepped portion 4 is a paper receiver that is used as a manual paper feed roller 6 when the plate 2 moves forward.
Move to the bottom of.

Reference numeral 7 denotes a push-up plate for pressing the manual paper sheets 5 stacked on the plate 2''2 against the manual paper-feeding roller 6, and the push-up plate 7 protrudes from the upper surface through the through hole 2b when the plate 2 moves forward.
The paper receiver is hidden under the board 2 when it moves backward.

8 is a paper feed cassette, 9 is paper stacked in the cassette, 1
0 is a cassette paper feed roller, 11 is a push-up plate that presses the paper 9 against the cassette paper feed roller 10, 12 is a paper receiver that comes into contact with the cassette paper feed roller 10 when the plate 2 moves forward, 13
14 is a separating roller device, and 15 is a second paper feeding roller.

In the above configuration, when the upright feeding tray l is in the upright position as shown in FIG. The paper is sent out by the paper, is separated sheet by sheet by the separation roller device 14 located at the front, and is sent to the second paper feed roller 15.

On the other hand, as shown in Figure 8, fold down the folding tray 1 and place the paper tray on the plate 2.
When the cassette feed roller 1 is moved forward, the sabaki body 12
0, and the mole piece 13 goes under the cassette paper feed roller 10. That is, the cassette paper feed roller 10 and the sheets 9 stacked in the cassette are insulated. Therefore, when the paper tray 5 is loaded with manual paper 5 onto the plate 2, the paper is fed out by the manual paper feed roller 6, and is preliminarily moved by the cassette paper feed roller 10 and the paper cutting body 12 to the sorting roller device 14.
The sheet is finally separated and sent to the second sheet feeding roller 15.

[Problem to be solved by the invention]

However, in the case of the above manual paper feeder, the Zahaki type 1
In the paper receiver 2, a friction member (for example, a pad made of a rubber material) was directly adhered to the upper surface of the plate 2. Therefore, when the paper feed cassette 8 is loaded, a large push-up blade by the push-up plate 11 is applied to the mole piece 13 that has sunk below the cassette paper feed roller 10 as shown in the arrow A, as shown in FIG. As a result, the shaving body 12 came into too strong pressure contact with the cassette paper feed roller 10 (arrow B) L, sometimes making it impossible to manually feed the paper.

This invention is intended to solve the above problem, and when the paper feed cassette is loaded, the large push-up blade A by the push-up plate 11 is applied to the mole piece that has sunk under the cassette paper feed roller. Another object of the present invention is to provide a manual paper feeding device in which the paper sheet is not brought into strong pressure contact with the cassette paper feeding roller.

[Means to solve the problem]

In order to achieve the above object, the present invention includes a foldable paper feed tray, a paper tray that slides back and forth in conjunction with the tray, and a paper tray that slides forward and backward. In a manual paper feed device, the paper feed device is provided with a stripping body that handles the paper sent out from the manual paper feed roller in contact with the paper feed roller, and a mole piece that goes under the cassette paper feed roller. The structure is such that the pressing force generated between the paper roller and the paper roller can be released without deteriorating the sorting performance.

〔Example〕

Next, the present invention will be explained based on the embodiments shown in FIGS. 1 to 6.

Fig. 1 is a perspective view showing the main parts of the present device, Fig. 2 is an exploded perspective view of the same, Fig. 3 is an enlarged cross-sectional view when the sabaki body is pressed against the cassette paper feed roller, and Fig. 4 is the same during separation. 5 and 6 are perspective views showing other examples of attachment of the Sabaki body. Note that the same parts as in FIGS. 7 to 9 are indicated by the same reference numerals.

In the figure, 21 is a leaf spring material which is an elastic material, 22 is a friction member (pad) fixed to the upper surface of the leaf spring material 21,
It constitutes the Sabaki body 12.

The plate spring material 21 may be a SUS plate or a phosphor bronze plate, but is not limited thereto. This plate spring material 21
is attached at its base end 21a, and the paper receiver is attached to a beam section 201 that straddles the through hole 2b of the plate 2, and the free end side 21a' can be easily elastically deformed within the through hole 2b. There is.

The plate spring material 21 and the paper holder may be attached to the plate 2 either removably or integrally.

As an example of the former (removable), as shown in Figs. A receiver fitted with the edge and provided with locking claws 21b and 21c extending forward from both sleeves of the base end portion 21a and provided on the beam portion 201 is locked in the holes 202 and 203. Further, as shown in FIG.
1 with a screw 204, and can be removed by loosening the screw 204. As an example of the latter (integral fixation), as shown in FIG. For example, mechanical coupling means) may be used.

Although the friction member 22 is made of urethane rubber mixed with fine cork particles, it may be selected from other materials having a high friction coefficient. Friction member 22 to plate spring material 21
An adhesive is usually used for adhesion, but molding adhesion may also be used depending on the insert moldability. Further, if there is another suitable method, it can also be used.

Then, the paper tray 1 is tilted down, the paper tray advances the plate 2, and the paper tray moves the paper leading end regulating step 4 of the plate 2 to below the manual paper feed roller 6 as shown in the third figure. Then, in the paper tray, the mole piece 13 at the tip of the plate 2 goes under the cassette paper feed roller 10 and insulates the cassette paper feed roller 10 and the sheets 9 stacked in the cassette, while the cassette paper feed roller 10 The Sahaki body 12 is brought into pressure contact with the Sahaki body 12.

In the above state, when the paper feed cassette 8 is loaded and the large push-up blade A is applied to the mole piece 13 that has gone under the cassette paper feed roller 10, the cutting body 12 is brought into strong pressure contact with the cassette paper feed roller 10. However, in the Sahaki body 12 of the present invention, the force of the push-up blade A is reduced by the force of the push-up blade A as shown in FIG. Since the paper is divided into D and D, there is no possibility that the paper cannot be fed.

〔Effect of the invention〕

As described above, the present invention includes a paper feed tray that can be raised and lowered, and a paper tray that slides in the front and rear directions in conjunction with the paper tray, and the paper tray is provided with a plate that contacts the cassette paper feed roller when the tray moves forward. The manual paper feed device is provided with a sabbling body that handles the paper sent out from the manual paper feeding roller and a mole piece that goes under the cassette paper feeding roller, characterized in that the sabbling body is made of an elastic material. , the pressure force generated between the cassette paper feed roller and the cassette paper feed roller during sorting does not become too high.
This has the excellent effect of always providing a preferable crushing pressure.

[Brief explanation of the drawing]

Figures 1 to 6 show embodiments of this invention.
The figure is a perspective view of the main part, Figure 2 is an exploded perspective view, Figure 3 is an enlarged sectional view when the sabaki body is pressed against the cassette paper feed roller, Figure 4 is a sectional view when it is separated, and Figure 5 is an exploded perspective view. 7 and 6 are perspective views showing other installation examples of the Sabaki body, FIGS. 7 to 9 are explanatory diagrams of a conventional manual paper feeding device, and FIG. 7 is a cross-sectional view when feeding paper from a cassette. FIG. 8 is a sectional view when manually feeding paper, and FIG. 9 is an enlarged sectional view of the sabaki body portion. The tilting paper feed plate paper holder is a plate support shaft tip regulation step part manual paper manual paper feed roller push up plate cassette 0 paper stacked in the cassette - cassette paper feed roller 1 - push up plate 2 - Sabaki piece 3 - Moguri piece 1 - Leaf spring material 2--Friction member

Claims (1)

[Claims] It is equipped with a paper feed plate that can be raised and lowered freely, and a paper receiving plate that slides back and forth in conjunction with the paper feeding plate, and when the paper receiving plate moves forward, it touches the cassette paper feeding roller and receives the paper sent out from the manual paper feeding roller. What is claimed is: 1. A manual sheet feeding device comprising a sabbling body for handling paper and a mole piece for slipping under a cassette paper feeding roller, characterized in that the sabbling body is made of an elastic material.