JPS59114248A - Sheet aligner - Google Patents

Abstract

PURPOSE:To align a sheet to be carried stably with referential position by performing alignment under such state where the sheet can be kept easily to the side. CONSTITUTION:Upon rotation of a flap through a roll 25, a sheet is discharged to second tray 28 in arrow direction 351 where the sheet will drop onto a regulating table 34 and kept to side to be carried to inside of referential line 4. Thereafter the sheet 35 is separated and discharged by means of a pair of transfer rollers 29, 30. Then the separated/discharged sheet is kept to side on a referential line 4 by means of a pair of rollers 31, 32 and carried in arrow direction 352 to a copier.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sheet alignment device for copying machines, printing machines, recording machines, and other various machines (hereinafter referred to as copying machines) equipped with a mechanism for aligning and conveying sheets.

Conventionally, in this type of apparatus, for example, sheets conveyed and collected usually have positional variations in the width direction of one sheet, and are stacked irregularly with respect to a reference position. Therefore, a general method for aligning and stacking such sheets is as shown in FIG. 2, there is a method of shifting the sheet to the reference line 4, but in this case, a mechanism for driving the meandering roller 3 is required, and if the sheet is conveyed too far from the reference line 4, the shifting roller 1. If the capacity of the paper sheet 2 is not large enough, there will be a drawback that the sheets will be conveyed without being sufficiently aligned (that is, without sheet alignment).

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a novel sheet aligning device that is improved in view of these drawbacks.

Another object of the present invention is to relate to a sheet aligning device that allows sheets to be aligned in a state where it is easy to align the sheets.

That is, the main structure of the present invention that can achieve the above object is a sheet alignment device that aligns the sheets to be conveyed to a sheet conveyance reference position and aligns the sheet ends to the sheet conveyance reference position and collects the sheets. After guiding the edges of the sheets being conveyed to the sheet conveyance base position by a sheet guide member from outside the sheet conveyance reference position and stacking the sheets so that the sheet ends are near the sheet conveyance base pruning position inside the sheet conveyance reference position. The sheet aligning device is characterized in that the stacked sheets are shifted and conveyed from inside the sheet conveyance reference position to the sheet conveyance reference position so that sheet ends are aligned with the sheet conveyance reference position. .

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. FIG. 2 is a cross-sectional view showing an embodiment of a copy machine to which the present invention is applied, and FIG. 3 is a perspective view showing the sheet conveying section thereof. The image of the original document is illuminated by a halogen lamp 6, and is illuminated by a mirror 7-8.
．． Lens 9. An image is formed by a mirror 10 onto a drum 11 covered with an optical semiconductor. The drum 11 is uniformly charged by a charger 12, and after an image is exposed on the drum 11,
The toner image is visualized on the drum 11 by the developing device 13.

Then, the visible image is transferred by a transfer charger 15 onto a sheet that is conveyed in a timely manner by a register roller 14, and the latent image and toner image remaining on the drum 11-A are then transferred by a lamp 16 and a cleaner 17. It is removed from the drum 11.

On the other hand, the sheet 18 is stored in a cassette or the like 19,
The half-moon-shaped paper feed roller 20 and the register roller 14 send out the toner image in synchronization with the toner image on the drum 11, and after the toner image is transferred by the transfer charger 15, the separation roller 2
1, it is separated from the drum 11, passed through a conveying section 22, and sent to a fixing device 23 such as a heat fixing device. When copying after fixing is normal one-sided copying, the flap 24 is at the solid line position in FIG.
It is discharged to the top.

In the case of double-sided copying, the sheet on which only the front side (one side of both sides) has been copied is positioned directly under the first tray 27 by rotating the flap 24 to the position shown by the two-dot chain line in FIG. The required number of sheets are stored in the second tray 28 for temporary storage, and then the sheets are sequentially separated and discharged by a pair of reversing rollers 29 and 30 facing each other at an appropriate timing.

The ejected sheet is conveyed and at the same time shifted by shifting rollers 31-32 provided under the copying machine main body, and is fed into the copying machine main body.

Before being fed into the main body of the copying machine, the sheet is once stopped by register rollers 14 to form a loop. This is because when the slip roller 33 sends the sheet conveyed by the parting rollers 31 and 32 to the register roller 14, the slip roller 33 once hits the register roller 14 to form a loop in order to correct the skew of the sheet. This is to make it happen.

When the loop is formed, the slip roller 33 slips due to the resistance of the loop and rotates idly.

Thereafter, at a certain timing, the register roller 14 rotates and feeds the sheet to the drum 11.

The rest is the same as normal copying, and the sheets are finally collected in the first tray 27.

Next, a sheet conveyance section to which the present invention is applied in the conveyance path for double-sided copying will be described.

The sheet conveyed by the fuser rollers 23a and 23b passes through the conveyance roller 25 and is discharged to the second tray 28 in the direction of arrow 35□ by the rotation of the flap 24, but at this time, the sheet is The transfer i is performed so that the tray 28 falls onto the regulation table 34 (details will be described later) installed on the tray 28 and is conveyed inside the reference line 4, and the second tray 28
will be accumulated.

The collected and aligned sheets 35 are then transferred to a pair of reversing rollers 29
・Separated and discharged by 30.

The separated and ejected sheets are aligned on the reference line 4 by width alignment rollers 31 and 32, conveyed in the direction of arrow 352, and fed into the main body of the copying machine.

Since the width adjusting rollers 31 and 32 can effectively perform their functions on the sheet conveyed inward from the reference line 4, the role of the regulating table 34 is very effective.

Next, details of the regulation stand 34 will be explained with reference to FIGS. 4 and 5. Figure S4 is a perspective view thereof, and Figure 5 is a plan view thereof. The regulation base 34 is a kite board with sides A, B, C, D, and E as shown in the figure. When the tip reaches surface A, the sheet rides along surface A, moves on surface B, and hits surface D. At this time, the sheet moves obliquely toward the inside of the regulating table 34 due to the inclination of the D plane and falls along the E plane.

Since the sheet after falling is conveyed along the E plane or at a position away from the E plane, if the E plane is set on the reference line 4, the sheet will be conveyed inside the reference line. It will be collected. FIG. 3 shows the conveyance path of this sheet.

The seat a that has climbed onto the A side of the regulation base 34 moves on the 8 sides (see) b) and hits the L and D sides (seat C).

The sheet C that has hit surface D moves obliquely along the inclination of the rear surface (sheet d)L, and is removed from the regulating table 34 (sheet e).

Since the sheet e that has come off the regulation table 34 is then conveyed along the 8 sides or at a position away from the E side, if the E side is set at the position of the reference line 4, then the sheet e can be conveyed along the 8 sides or at a position away from the E side. As a result, the sheets are inevitably stacked and aligned inside the reference line.

In this way, from the fuser rollers 23a and 23b, the arrow 35,
The sheets conveyed in this direction are collected on the second tray 28 near the reference line 4.

Next, other embodiments of the present invention will be described.

FIG. 6 is a partial perspective view showing the main parts thereof. The figure shows a portion that replaces the regulation stand 34 of the previously described embodiment. The sheet 35 that has been conveyed is placed on a shaft 38 supported by support plates 371 and Φ372. After the end of the sheet has been conveyed, the rotary linenoid 39 rotates in the direction of the arrow, actuating the cam 40, and the kite plate 38 moves along the two-dot chain line in the figure. rotated to the position.

Then, the sheet 35 falls onto the second tray 28 along the reference guide 41 below the blade plate 38.

At this time, if the reference guide 41 is provided at the position of the reference line 4 of the apparatus, the sheets 35 will be collected and aligned inside the reference line 4.

As described above, according to the configuration of the present invention, the conveyed sheets are always stably aligned S to the reference position and stacked S.

[Brief explanation of drawings]

Fig. 1 is a plan view showing a conventional example, Fig. 2 is a sectional view of a copying machine to which the present invention is applied, Fig. 3 is a perspective view of its sheet conveying section, Fig. 4 is a perspective view of a regulating table, and Fig. 5 The figure is the plan view, No. 6
The figure is a partial perspective view of another embodiment. In the figure, 34 is a regulation stand, and 38 is a guide plate.
Canon Co., Ltd.

Claims (1)

[Scope of Claims] In a sheet aligning device that performs sheet alignment by shifting conveyed sheets to a sheet conveyance reference position, the sheets conveyed to align the sheet ends with the sheet conveyance reference position and to be stacked are provided. After guiding the ends of the sheets from outside the sheet transport reference position with a sheet guide member and stacking the sheets so that the end portions are near the sheet transport reference position inside the sheet transport reference position, the stacked sheets are A sheet aligning device characterized in that the edge of a sheet is aligned with the sheet conveyance reference position by partially conveying the sheet from inside the sheet conveyance reference position to the sheet conveyance reference position.