JPS58109359A - Paper arranging device in paper discharging section - Google Patents

Abstract

PURPOSE:To improve mutual adhesive property and registering property between processed blankets by driving rotatably a rotary member contacting the end face of the blanket with the end face being directed downward and abutting against a position regulating plate. CONSTITUTION:Brush rollers 50, 51 having respectively brushes 52, 53 planted spirally in shafts 54, 55 so as to lightly contact stacked blanks P' are provided on both left and right side regulating plates. The shafts 54, 55 are rotatably driven in the direction of arrows C, D respectively by a drive so that the blanks P' can be moved in the discharging direction to be transferred downward at the surface of the contact portion. Thus, the blanks P' are urged downward to improve their adhesive property and registering property.

Description

DETAILED DESCRIPTION OF THE INVENTION The technical field of the invention relates to a paper alignment device in a paper discharge section of a copying machine, a printing machine, etc.

Conventional technology In general, processed paper discharged to tray 1 in the paper discharge section of a photographing machine is subject to the effects of pressure and heat in the fixing section and a bone box in the transfer section. There may be slight curls or paper phase 1.
It is difficult to secretly suppress the sieve box-like repulsive force of I and lii. Therefore, in order to hold a large number of sheets of paper, the adhesion of such paper is particularly important in devices that have a large-volume paper holding mechanism that detects the stacking height of ejected paper and moves the tray up and down accordingly. Poor paper quality increases the error between height and number of sheets, making it impossible to achieve the desired paper holding power, which is often a practical problem.

In addition, such a large-volume paper holding mechanism usually has substantially vertical position regulating plates that match the size of the paper being used, but the regulating plates on both sides are designed to accommodate paper I+ in consideration of paper passing.
] is set slightly wider than .

For this reason, the side edges of the sheets that are ejected and stacked are uneven even when sheets of the same size are used, and it is troublesome to have to align the edges later, for example, during filing or binding operations.

In addition, if the trailing edge of the paper that is being ejected and stacked is released from the ejection roller before the leading edge of the paper reaches the paper leading edge position regulating plate, the paper misalignment mentioned earlier will occur. It also occurs on the end faces.

Purpose The present invention was made in view of the above-mentioned circumstances, and it is an object of the present invention to improve both the adhesion of ejected and retained paper and the consistency of the front and rear edges and both side edges of the paper. The purpose is to provide a paper alignment device that can

Remains - Twisting Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 schematically shows the relationship between a copying machine (1) and a paper discharge section (2) that holds processed sheets discharged from the copying machine (1) in a stack. In the following, for convenience, a copying machine (1) will be explained as an example of a mechanical device that processes and discharges paper, but the present invention is also applicable to printing machines, printers, etc. that use standard cut sheets. obtain.

In a copying machine (1), copy paper (P) fed into the machine by a paper feeding mechanism (not shown) is fed into the machine by a photosensitive drum (10).
) The upper number is combined with the first toner image formed, the toner image is transferred and separated from the drum surface in a transfer and separation section (11), and fixed by a fixing roller (12). After that, the paper is conveyed to the paper discharge section (2). Note that the image forming mechanism for the photosensitive drum (io), the fixing mechanism using heat or pressure, etc. are well known in electrophotographic copying machines and the like, so illustrations or detailed explanations thereof will be omitted.

The processed copy paper (P') is delivered to the output port (of the copying machine (1)).
13), is turned upward by a guide member (21), and is transferred to a conveying device (22) consisting of a belt and rollers.
), (23), the paper is further changed direction by a guide plate (24), and is delivered onto the tray (25) of the paper discharge section (2) with the image forming surface facing downward.

FIG. 2 shows the configuration of the paper ejecting device. Note that the arrow fat indicates the paper discharge direction.

Processed copy paper (P is the regulation plate (26) on both left and right sides.
), (27), (28), and (29), and are brought into contact with the regulating plate (30) at the front end and discharged onto the tray (25) where they are held in a stack. ,
As mentioned above, the interval between the regulating plates on both sides is set slightly wider than the width of the paper (P), and as shown in FIG. By forming and sending out the paper, it is devised so that the paper can easily fit between the paper regulating plates (26), (27) and (28), (29). The paper (P') discharged at 1 has a slight sag in the width direction, and spreads out between the regulating plates on the sketch side as time passes.

However, as mentioned above, even with this, the end faces of the stacked sheets (P) become uneven as shown in FIG. 4, which is inconvenient for later handling.

In the present invention, for example, as shown in FIG. 2, the right and left both-side regulating plate portions are spirally connected to the shafts (54), (55) so as to make light contact with the sheets (P') to be stacked. Brush rollers (50) and (51) each having brushes (52) to (53) embedded in the shape of the brush rollers (50) and (51) are provided, and the paper (P') is conveyed in the ejection direction by a drive means (not shown), and , the shafts (54) and (55) are respectively moved by arrows fcl,
+l) By rotating and driving in one direction, paper (P
By urging the paper (P') downward, it was possible to improve the adhesion of each paper (P') and to improve the alignment of the front and rear end surfaces of each paper.

That is, as shown in Figure 5.6.7, the brushes (52) (5
The surface facing the paper (P') in 3) is set to be located slightly (1 to 5 m+n) inside of the regulating plate surfaces on both sides, and the paper (P') that is ejected with flexure is When it is about to spread, the end of the brush roller (50)
, (51) forcibly biased downward and in the discharge direction, thereby ensuring close contact and aligning blood on both the front and rear sides.

In addition, as shown in FIG.
1) may be provided so as to be inclined forward with respect to the paper traveling direction (a) to apply a downward biasing force to the paper. In this way, the adhesion of the paper and the alignment of the edges are improved without forming the paper into a spiral shape.

In addition, brush rollers (5o), (51) and (60
According to experiments, a rotational drive speed of 5 to 10 rNrVSeC0, which is the circumferential speed of the tip of the brush, was good, but this may vary depending on the paper quality, paper ejection speed, the material of the flexible material on the roller surface, or the brush bristles. length, pitch of the spiral.

It may be determined as appropriate depending on the inclination angle of the roller, etc.

In addition to the above-mentioned brush roller-shaped rotating member, any rotating member may be used as long as it has at least a member on its surface that is flexible to the extent that it does not damage the end surface of the paper.

As explained above, the present invention rotates the rotating member that is in contact with the end surface of the paper at the paper stacking position of the paper ejection unit so that the end surface of the paper is directed downward and comes into contact with the front edge position regulating plate. By doing so, it is possible to improve the adhesion between the processed sheets that are ejected and stacked.

The effect of improving the consistency of both end surfaces of both sides can be achieved with a simple configuration, which is extremely useful in practice.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view showing the relationship between a copying machine and a paper discharge section, FIG. 2 is a perspective view showing the structure of a paper discharge section equipped with a paper alignment device of the present invention, and each figure shows the structure of a paper discharge section. FIG. 4 is a diagram showing a conventional stacked state of paper,
FIG. 5 is an enlarged view of the main parts of the paper alignment device of the present invention, FIG. 6 is a diagram showing the operation of the paper alignment device of the present invention, and FIG. 7 is a diagram showing the relationship between the roller rotation direction and the paper ejection direction. , FIG. 8 is a diagram showing another embodiment of the present invention. l... Copying machine 2... Paper ejection section 25...
・To tray 2 27.28.29. , , , , side regulation plate 30. , , front end regulating plate 50, 51.60.
, , , , brush roller 52.53. ,,,
, Brush Fig. 1 Fig. 2 Fig. 3 Fig. 47

Claims (1)

[Scope of Claims] 1. In the paper discharge section that holds the processed Btj paper, it rotates at a position in contact with the paper end surface at the paper stacking position, moves the paper in the paper discharge direction, and also applies a downward biasing force. A paper aligning device characterized in that it is provided with a rotating body formed so as to give the paper. 2. The paper gripping device according to claim 1, wherein the rotating body has a spiral shape, at least on its surface, capable of applying a downward biasing force to the paper as it rotates. 3. A paper aligning device according to claim 1, wherein the rotating shaft direction of the rotary body is set to be inclined in the paper advancing direction in order to apply a downward biasing force to the paper. 4. The paper aligning device according to claim 1, wherein the rotary body has at least a brush on a surface thereof made of a soft material.