JPH01226652A - Paper adjusting device - Google Patents

Abstract

PURPOSE:To permit the use in a high speed machine by permitting the operation in a short time by pivotally supporting a pair of regulating plates onto a tray by the revolution supporting points. CONSTITUTION:Regulating plates 2 and 2 are pivotally supported in turnable ways onto a tray 1 by the revolution supporting points 4 and 4, and bent so as to be successively spread outwardly from a paper 3 on the paper advance side from the rotary supporting points 4 and 4. Since, in a waiting state, the paper advance side of the regulating plate 2 is opened outwardly from the paper 3, even if the center of the paper 3 deflects or the paper is aslantly fed, the top edge of the paper 3 contacts the insides of the regulating plates 2 and 2 which are opened outwardly into funnel form and is introduced, and the generation of clogging of paper 3 is prevented. After the paper 3 passes through the part opened into funnel form, the paper advance side of the regulating plates 2 and 2 are turned inwardly, having the revolution supporting points 4 and 4 as fulcrum, and then the edges on the both sides of the paper 3 contact the insides of the erection parts 21 and 21 on the paper advance sides of the regulating plates 2 and 2, and the paper 3 is adjusted to a prescribed position.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a paper alignment device for a copying machine, and particularly to a paper alignment device for a duplex copying machine when feeding paper to an intermediate tray. The present invention relates to a device for performing

(Prior Art) When making copies with a copying machine, paper is supplied either in a cartridge or by placing the paper on an appropriate table. Also, if you want to automatically make double-sided copies,
First, the paper on which the first side has been copied is transported through the copying machine and stocked in an intermediate tray, and then goes through the copying process again and a copy is made on the second side.

When stocking paper in the tray or transporting it to the photosensitive drum, the center of the paper should be aligned with the copy center of the copier, or the center of the copy on the first side should be aligned with the center of the copy on the second side. A paper width alignment mechanism as shown in FIG. 4 is generally used.

The operation of this width alignment mechanism is such that a pair of regulating plates 12 and 12 that move left and right as shown by the arrows in the figure are on standby in a state wider than the width of the paper 8 sent to the tray 1. When reaching between the regulating plates 12.12, the regulating plates 12.12
moves in parallel to the width of the paper 8 to align the side edges of the paper 8, and then returns to the standby state again to prepare for the next paper to be sent.

(Problem to be Solved by the Invention) If the paper is extremely deviated while being conveyed, the leading edge of the paper may hit the regulation plate and cause a paper jam. To prevent this, widen the spacing between the regulating plates,
If the time during operation is increased, it takes time to move the regulation plate, which increases the time required to align the widths, making it difficult to use in high-speed machines.

(Means for Solving the Problems) In the present invention, a pair of regulating plates are pivotally supported on a tray by a rotating fulcrum, and the interval between the regulating plates is set such that the distance between the regulating plates is set so that the paper is outside the paper on the paper entry side of the rotating fulcrum when in a standby state. It is now possible to gradually expand in both directions.

(Function) By performing K as described above, the shape of the paper entry side of the pair of regulation plates becomes funnel-like in cross-section, making it easier for paper to enter.After the paper enters, the regulation plates are rotated inward. ,
You can align the width of paper.

(Embodiment) FIG. 1 is a perspective view of an embodiment of the present invention. A pair of regulating plates 2, 2 are provided on the paper entry side of the tray 1. The regulating plates 2, 2 are connected to the tray l by means of the rotation fulcrum 4.4.
It is rotatably supported by the rotation support 4, 4 so as to gradually spread outward from the paper 3 on the paper entry side.
It is bent. The regulating plates 2, 2 extend upwardly from the upright portion 21.
21, and these inner surfaces are in contact with both sides of the paper 8. The interval between the rotational supports 4 and 40 can be changed as appropriate depending on the size of the paper 3. The paper 8 is conveyed by rotating the paper feed roller 5.

In this device, in the standby state, the paper entry side of the regulating plate 2 is open to the outside of the paper 8 as shown in the figure. Since the paper is guided by hitting the inside of the regulating plates 2, 2 which are opened outward in a funnel shape, no paper jam occurs.

After the paper 3 passes through this funnel-shaped part, the rotation fulcrum 4
．． 4 as an axis, when the paper entry side of the regulation plates 2, 2 is rotated in the direction of arrow A in the figure, that is, inwardly, the edges on both sides of the paper 3 are aligned with the upright portions 21 of the paper entry side of the regulation plates 2, 2. Abutting the inside of 21, the paper 8 is aligned in position. At this time, the paper ejection side of the regulating plates 2, 2 opens in the direction of arrow B in the figure, that is, outward, so even if a long paper enters diagonally, the regulating plates will not displace the paper as in the conventional system. The entire length is not restricted at once, and corner bends can be prevented from occurring. Note that when the regulating plates 2, 2 return to their original positions in preparation for the entry of the next sheet, the regulating plates 2, 2
Since the paper ejection side of the paper rotates inward, its upright portion 21
．． The inside of 21 presses the edges on both sides of the paper 3 again to align the paper.

The means for rotating the regulating plates 2, 2 is a solenoid.

There may be various types of motors, clutches, etc., but FIGS. 2 and 8 show a system using a solenoid and a link device. A portion of the tray is cut away to show the back side.

A link 6.6 is provided on the back side of the tray 1, and the link 6.6 is pivotally supported at the end of the regulation plates 2, 2 on the paper entry side.
One of the mutual connections is connected to the solenoid 7, and the other is engaged with one end of the spring 8 and pulled upward in the figure. The other ends of the solenoid 7 and the spring 8 are fixed to the back surface of the tray 1 or to an appropriate location within the copying machine. In FIG. 2, the current to the solenoid 7 is cut off, the links 6.6 are pulled by the springs 8, and the paper entry sides of the regulating plates 2, 2 are opened outward to be in a standby state.

FIG. 8 shows a state in which current is flowing through the solenoid 7, and the solenoid 7 pulls the link 6.6 downward in the figure against the force of the spring 8, and as a result, the regulating plates 2, 2 The paper entry side rotates inward to align the paper.

(Effects) Since the paper is aligned by rotating the regulating plate instead of moving it in parallel, it can operate in a short time and can be used in high-speed machines. It is possible to prevent the center of the paper from shifting, paper jams due to diagonal feeding, and corner folds of the paper.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a perspective view of an embodiment of the present invention, and FIGS. 2 and 3 are partially cutaway plan views showing the operation of an example of a rotation means for a regulating plate used therein. It is. FIG. 4 is a perspective view of a conventional example.

Claims (1)

[Claims] It consists of a pair of regulating plates that are rotatably supported on the device by a rotating fulcrum, and the interval between the regulating plates is widened outward from the paper on the paper entry side of the rotating fulcrum when in the standby state. Device