JPS5912045A - Sheet stacking device - Google Patents

Abstract

PURPOSE:To easily align sheets by moving a sheet moving means in the direction of the intersection of sheet guide members crossing nearly at a right angle in a stacker of the record paper, etc. of a copying machine. CONSTITUTION:The first and second sheet guide members 20, 21 crossing nearly at a right angle and arranged at an fixed inclination at the sheet incoming direction and a sheet moving means 25 rotating to move by pressure a sheet 12 in the direction of nearly the intersection of said sheet guide members 20, 21 are provided. The sheet 12 being conveyed and discharged is moved in the direction of the intersection by the sheet moving means 12 so that it is aligned and stacked by the first and second sheet guide members 20, 21. Therefore, the sheet can be aligned easily, reliably, and excellently.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention applies to copying machines, printing machines, recording machines such as laser beam grinders, and other sheets (including transfer paper, copy paper, printing paper, recording paper, and other types of paper in sheet form). The present invention relates to a sheet stacking device (f)i (hereinafter also referred to as a stacker) of various machines (hereinafter referred to as a recording machine, etc.) equipped with a mechanism for discharging and conveying sheets.

Conventionally, in this type of device, the sheets stored in the stacker are pushed in the direction of entry by a rotating paddle (sheet moving means for moving the sheets) made of a flexible material such as rubber. 1111 by the putter whose side is also movable in the direction perpendicular to the direction of approach.
I was locating both sides and setting them up. However, if the sheets stored in the stacker enter the stacker late or quickly, for example, the putter's pressure on the sheet f.
+4: Shifts from the predetermined position (center) of the sheet/This may give rotational motion to the notebook and the next sheet may arrive before the paddle can fully pull the sheet. In such a case, the putter is unable to press the newly incoming sheet due to the irregularity of the previous sheet, and the irregularity continues thereafter.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a novel sheet storage device that improves these drawbacks.

Another object of the present invention is to provide a sheet stacking device that can easily and reliably align sheets stacked in a stacker.

That is, the main structure of the present invention capable of achieving the above object is a sheet storage device that arranges and stores sheets to be conveyed and discharged on a sheet storage member, and includes a sheet storage device, a sheet storage member, and a sheet moving means that rotates to press and move the sheet in the direction of the substantially crossing position of the sheet guide member of the first sheet guide member; This sheet stacking device is characterized in that sheets are stacked by being arranged in a proper manner by a second sheet guide member and a second sheet guide member.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of the present invention. In the figure, a pair of paper ejection rollers 1 and 2 feed the paper 12 into the stacker. 20.21°22 is the first point that regulates the position of the paper. They are second and third guide members. The first member 20 of the first guide member 20. and the surface 21 of the guide member 21.
It is substantially perpendicular to the stacker, and is at a constant inclination angle with respect to the direction of the sheets 12 entering the stacker. Similarly, the second surface 20 of the guide member 20! and guide member 22 22. The direction of the sheet 12 entering the stacker is at a substantially right angle with the direction of the sheet 12, which is also at a certain angle of inclination (which does not necessarily have to be the same angle as the above angle).

Reference numeral 23 denotes a motor, and a motor shaft 24 extends long from both ends, and nip paddles 25 and 26 are attached to both ends of the motor shaft 240. The motor 23 rotates in the direction of the arrow, and the paddles 25,26 likewise rotate in the direction of the arrow. paddle 2
5.26 is made of a flexible member such as rubber, and the material has a relatively low electric resistance and makes one movement so as not to charge the paper. Similarly, the handle 26 is connected to the second surface 20 of the guide member 20. and acts to pull the guide member 22 in the direction of the surface 221. The motor 27 functions to rotate the motor 23 about an axis perpendicular to the axial direction of the motor shaft 24 . By operating the motor 27 at a certain angle, the paddle 25 and the paddle 26 can be selectively operated. FIGS. 2 and 3 illustrate the operation of the above configuration.

In FIG. 2, the center 12 of the leading edge of the paper 12 coming into the stacker. corresponds to the center 20° of the guide member 20, and the paper rotates around the center point 20 due to the action of the paddle 250. And 21. The position is determined by .

The best results can be obtained by setting the distance l between the center point 203 and the surface 21° to be slightly longer than half the paper width.

The orientation of the paper 12 entering the stacker and the first side 20. and surface 21. If the paper is positioned in a different direction, the end 21 of the guide member 21 is separated from the paper 12 entering the stacker (δ in the figure), causing a paper jam or the like. It has become. In the state shown in FIG. 2, the nozzle 26 is rotating but is in a non-contact position with the paper and does not pull the paper.

FIG. 3 is a diagram when the motor 27 is rotated by a certain angle. The paddle 25 does not come into contact with the paper, and instead the paddle 26
contacts the paper, the paper 12 is brought into contact with the second side 20. and the surface 22m.

By selectively operating the two paddles 25 and 26 in this manner, it is possible to sort the sheets input into the stacker at desired locations. FIG. 4 is a perspective view showing the state of sheets sorted by such an embodiment.

FIG. 5 is a perspective view showing another embodiment, in which sheets are sorted in three positions. The embodiment of Fig. 1 and the first
The shape of the guide member 20 is different, and the third side No. 20 enters the stacker] Ajl end 12. It is constructed parallel to the FIGS. 6 to 8 are plan views illustrating the operation.

In FIG. 6, the sheets 12 entering the stacker trap are positioned at 201 and 21 degrees by the action of paddles 250. In FIG. 7, when the motor 27 is rotated as shown, the paper 12fi entering the stacker is positioned between the second surface 202 and the second surface 221 by the action of the paddle 26. In FIG. 8, when the motor 27 is rotated as shown, the paddles 25 and 26 work together to position the sheet 12 entering the stacker on the third surface 204.

In this case, the left and right direction of the paper will be slightly uneven, but for example, if t is set to this position when ejecting jammed paper from the paper conveyance path in a laser beam printer, it will be distinguishable from other positions even if it is slightly uneven. This makes it possible to easily sort jammed paper, etc. later. As described above, according to the other embodiment shown in FIG.
Sorting can be performed in a total of 3 positions, plus 1 position. FIG. 9 is a perspective view showing the sorted state.

FIG. 10 shows a modified embodiment of FIG. 1, which has the same effect as the previous embodiment even if the motor 27 is mounted in a different direction.

In addition, in the above-mentioned example, it is also possible to increase the number of stacked sheets by moving the stacker two degrees downward depending on the number of sheets loaded.

Alternatively, the positions of the guide member and paddle may be movable depending on the paper size. Alternatively, the two paddles may be driven separately.

As explained above, according to the configuration of the present invention, since the sheets are moved in the direction of the approximately intersecting position of the shrine, the sheet alignment can be easily and reliably performed. Furthermore, sheet jams can therefore be reduced.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIGS. 2 and 3 are plan views showing the sheet storage state, FIG. 4 is a perspective view showing the state 5 of sorted sheets, and FIG. Fig. 5 shows other embodiments; Fig. 1, Fig. 6, Fig. 7, and Fig. 8 d'.
That sheet 11! < A plan view showing the t# state, Fig. 9 is a perspective view of the sheet in the E1-yyed state, and Fig. 10 is the top view of the sheet. 1 is a perspective view showing the implementation of the process. In the figure, 12 is a sheet of paper, 20 is a first sheet guide member, 20. is the first surface, zo is the second surface, 204 is the third surface, 21 is the second sheet guide material, 22 is the third sheet guide part, 25.26 is the paddle, 27 is the motor It is. Applicant: Canon Co., Ltd. °0t+, Agent: Gi Marushima -,) shi, -・-':i No. 10-251]-

Claims (1)

[Scope of Claims] A sheet storage device for arranging and storing sheets to be conveyed and discharged on a sheet storage member, comprising: a guide member; a sheet moving means that rotates to suppress and move the sheet; the sheet being conveyed and discharged is moved by the sheet moving means in the direction of the crossing position and aligned by the first and second sheet guide members; A sheet stacking device that has all the features of stacking sheets.