JPS6133441A - Paper carrier - Google Patents

Abstract

PURPOSE:To carry even a warped paper correctly by providing plural roller groups rotatably in the paper carrying direction in a pair of sheet guides for aligning the papers in the right/left direction thereby suppressing motion of paper except in carrying direction. CONSTITUTION:Papers 2 are stacked on a hopper 1 movable up and down while contacting the leading edge against the front plate 11 and being held between sheet guides 9, 10. The feeder 6 for feeding the paper 2 is constructed with two sets of rollers 4, 5 interlocked through a belt 3 while a reverse roller 7 for preventing double feed is provided below one roller 4. In such arrangement, metals 12, 13 are arranged respectively at the upper end of respective sheet guide 9, 10 while plural rubber rollers 14, 15 having high frictional factor are arranged rotatably in the carrying direction Y to press the opposite sides of paper 2 on the hopper 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a paper transport device used in an optical character reading device and the like, and particularly to a paper transport device that can reduce paper transport errors.

[Technical Background of the Invention] As shown in FIGS. 4 and 5 as a side view and a front view, respectively, a conventional paper conveying device moves sheets 2 stacked on a hopper 1 with a belt 3. The paper 2 is taken out by a feeder 6 composed of two sets of rollers 4 and 5 and a reverse roller 7 that prevents two sheets of paper from being fed. When the sensor 8 detects the leading edge of the paper 2, the feeder 6
The feeder 6t rotates upward in the counterclockwise direction around the roller 4 and stops taking in the next sheet, and when the sheet 2 advances further and the sensor 8 detects the trailing edge of the sheet 2, the feeder 6t moves up the roller 4. It rotates clockwise around the center and descends to come into contact with the top surface of the paper 2 placed on the hopper 1 to take in the next paper.

In this case, the paper 2 is guided on both sides by two sheet kites 9 and 10, which are provided approximately at right angles to the hopper 1, and the leading edge of the paper 2 is guided by the sheet kites 9 and 10, which are provided approximately at right angles to the tip of the hopper 1. They were aligned by two front plates 11.

[Problems with the Background Art] According to the conventional structure described above, if the paper 2 itself is warped as shown in FIG. 5, or if perforations or sprocket holes are formed on the left and right sides of the paper 2, the paper 2
Both ends of the sheet are lifted up, and spaces shown as A and B are created between the sheet 1 to the guide 9 and the left end of the sheet 2, and between the sheet guide 10 and the right end of the sheet, respectively. For this reason, the paper 2 in the top row taken in by the feeder 6 moves freely in the left and right directions, so slippage between the feeder 6 and the paper 2 or unbalanced frictional force may cause the paper to become slanted, resulting in an unloading error. There was a drawback that the paper could not be taken out reliably.

[Object of the Invention] The present invention has been made in view of the above-mentioned points, and its object is to provide a paper conveyance device that can correctly take out paper even if the paper is warped. .

[Summary of the Invention] The present invention has a plurality of rubber rollers which are rotatably mounted on the sheet guides on both sides in steps E for abutting and pressing both sides of sheets stacked in a popper from above. According to the above configuration, even if the paper is warped, it will move straight due to the frictional force between the rubber roller and the paper, but will not move laterally.
The paper is not skewed and is transported correctly.

[Embodiment of the Invention] An embodiment of the paper conveying device according to the present invention will be described below with reference to the drawings.

FIGS. 1, 2, and 3 illustrate an embodiment of the present invention as a side view, a front view, and a plan view, respectively. In these figures, parts that are the same or equivalent to those of the conventional example shown in FIGS. 4 and 5 are designated by the same reference numerals. Paper sheets 2 are stacked on a vertically movable hopper 1, and the leading ends of these sheets 2 are brought into contact with a front plate 11 provided substantially perpendicularly to the leading end of the hopper 1, and are aligned.

Further, on both sides of these sheets 2, there is a sheet guide 9 fixedly fixed to one side of the hopper 1 at a substantially right angle, and a sheet guide 10 provided almost at right angles to the hopper 1 and movable according to the width of the sheets 2. It is being pinched. The feeder 6 is composed of two sets of rollers 4.5 that are interlocked by a belt 3. One of the rollers 4 is rotatably supported by a frame (not shown), and the two rollers 4 and 5 are rotatably supported by a frame (not shown). A reverse roller 7 that prevents sheet feeding comes into contact with it.

A roller 5 interlocking with this roller 4 can rotate vertically around the roller 4. A sensor 8 for detecting the presence or absence of paper 2 is installed on the feeding side of the feeder 6. The above structure is similar to the conventional example shown in FIGS. 4 and 5, but metal fittings 12 and 13 are provided at the upper ends of the sheet guides 9 and 10, respectively. A plurality of rubber rollers 14 each having a high friction coefficient, which is a feature of the present invention. ．． 15 is rotatably installed in the transport direction and is adapted to abut and press both sides of the paper 2 on the hopper 1.

The operation of one embodiment of the present invention will be described below. Metal fittings 12.1 added to the conventional example shown in Figs. 4 and 5
3 and rubber rollers 14 and 15 operate in exactly the same manner as the conventional example. Since the plurality of rubber rollers 14 and 15 have a high coefficient of friction, the pressed paper 2 is prevented from moving in the Z direction shown in FIG. 3, and can only move in the Y direction, which is the transport direction. Therefore, the paper 2 can be prevented from being skewed, and there will be no ejection error.

[Effects of the Invention] As described above, according to the present invention, a rubber roller that rotates in the conveyance direction is provided in the sheet guide that guides the paper to suppress the lateral movement, so that the movement of the sheet during conveyance is suppressed. The effects are great because skewing can be prevented, errors in taking out the paper can be eliminated, and the thickness can be increased.

[Brief explanation of the drawing]

1 is a side view showing the configuration of an embodiment of a paper conveying device according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a plan view showing the main parts of FIG. 1, and FIG. The figure is a side view showing the configuration of a conventional paper conveying device, and FIG. 5 is a front view of the N4 diagram. 1...Hopper 2-...Paper 6...Feeder 8...Sensor 9,1o--Sheet guide 11
...Front plate 12.13--Metal fittings IC
15-...Gumroller agent Kensuke Chika (1 person) by patent attorney 1st decoy
Figure 2 3vA Figure 4 511

Claims (2)

[Claims] (1) In a paper conveyance device consisting of a hopper on which paper is placed, a pair of sheet guides that align the paper horizontally on the hopper, and a paper feed mechanism that takes out the paper, the paper is transported to each of the sheet guides. A sheet of paper characterized in that a plurality of roller groups are provided rotatably in a direction, and these roller groups contact and press the paper on the hopper to suppress movement of the paper in directions other than the conveying direction. Conveyance device. (2) The paper conveyance device according to claim 1, wherein the roller is a rubber roller whose outer periphery is made of a high-friction material.