JPS62211220A - Automatic regulator for copying paper regulating guide - Google Patents

Abstract

PURPOSE:To prevent the skew feed of paper from occurring, by constituting a device so as to drive a copying paper regulating guide on the basis of a detection signal out of an original size detector, in case of the above-captioned device of a manual paper feeder for a copying machine. CONSTITUTION:When an original 18 is placed on an original block 3 and a cover 2 is closed, a light emitting element 4 and a light receiving element 5 of an original size detector B work, detecting a size of the original 18. If this detection signal is inputted into a controller, an original size S1 is judged from lengthwise and breadthwise dimensional ratios of the original 18, processing it together with a copying multiplying factor (m), and a copying paper size S2 is determined. Next, on the basis of this determined copying size S2, copying paper regulating guides 15 and 15' are shifted so as to be conformed to the width size of copying paper. With this constitution, positioning of these copying paper regulating guides are made into automatic regulation, thus the skew feed of the paper is preventable.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF THE INVENTION The present invention relates to a copy paper regulation guide automatic IN alignment device for a manual paper feeder used for copying.

Conventional technology The manual paper feed tray of a copying machine is used when using copy paper other than standard copy paper, or when using special copy paper (label paper, postcard, straw paper, etc.) that cannot be used with a cassette. First, it is a paper feed stand that allows you to feed copy paper without having to replace it with a special cassette.

As for the structure, in order to regulate the traveling position of copy paper,
The copy paper regulation guide is moved in a direction perpendicular to the conveyance direction of copy paper. When the paper running reference is the center reference, the running of the copy paper is regulated by a pair of copy paper regulation guides that move laterally relative to the center. Further, in the case of one-sided reference, one copy paper regulation guide serving as the reference is fixed to the paper feed table main body, and the other copy paper regulation guide is movable.

Conventionally, in order to match these copy paper regulation guides to a predetermined copy paper size, the copy paper regulation guides were positioned by manually sliding them on a paper feed tray.

Problems with the Prior Art The positioning work of the copy paper regulation guide in the above structure is done manually, so it is difficult to position it in one place, and there is also variation depending on the individual differences of the person doing the work, which reduces work efficiency. There were also problems.

Furthermore, if the above-mentioned positioning is not done reliably, it may cause the copy paper to be fed diagonally, resulting in the copy paper not being copied in the correct position, or clogging in the paper feed section of the copy machine, which may cause the copy machine to malfunction. There was also the issue of invitation.

Purpose of the invention This invention was created in view of the above circumstances,
By automatically adjusting the positioning of the copy paper regulation guide, you can quickly and easily place the copy paper regulation guide in the desired location.
It is an object of the present invention to provide a manual paper feeder that can position copy sheets with high precision and prevent skewed feeding of copy sheets.

Structure of the Invention The main means adopted by the present invention to achieve the above object are as follows: a document size detector for detecting the document size; and a copy paper size detector for controlling the width of copy paper. a manual feed tray equipped with a copy paper regulation guide that is movable in a direction perpendicular to the conveyance direction of the copy paper, and a drive device for driving the copy paper regulation guide in accordance with input from the document size detector. 1 is a copy paper regulation guide automatic adjustment device comprising a control device;

Below, embodiments embodying the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

It should be noted that the following examples are examples embodying the present invention, and are not intended to limit the technical scope of the present invention.

Here, FIG. 1 is a perspective view of the copying machine main body showing the attachment state of a document size detector and a manual paper feed tray used in an adjustment device according to an embodiment of the present invention, and No. 21!1 is A in FIG. 1. 3 is a perspective view of a manual paper feed tray that can be used in the above embodiment; FIG. 4 is a bottom perspective view of the manual paper feed tray shown in FIG. 3; FIG. 5 is a cross-sectional view of the rank sliding part in the manual paper feed tray, FIG. 6 is a block diagram of the control circuit of the copy paper regulation guide automatic adjustment device according to the above embodiment, and FIG. 7 is a block diagram of the control circuit in the same embodiment. It is a flowchart which shows a processing procedure.

The copy paper regulation guide automatic adjustment device according to this embodiment is as follows:
g size detector B (first
2), and a manual paper feed tray C (third figure)
and a control device that controls a drive device D (FIG. 4) for driving the copy paper regulation guide 15, 15' in accordance with an input signal from the document size detector B.

First, document size detector B for detecting the document size.
As shown in FIGS. 1 and 2, the reflector 1 is equipped with a reflector 1 hinged to the upper edge of the document table 3, and the reflector 1 is configured to move freely in opening and closing together with the original cover 2. There is.

At the bottom of the document table 3, as shown by the two-dot chain line in FIG. A plurality of sets of light-emitting elements 4 and light-receiving elements 5 are arranged in parallel so that the light passes through the document table 3, is reflected on the reflective surface of the reflection plate l, and is incident on the light-receiving element 5.

Therefore, some of these optical elements have their light beams blocked by the document being placed on the document table, and thus serve as detectors for determining the size of the document.

However, the document size detector B can be replaced by other means, such as a reflective photodetector.

Next, in order to regulate the width of the copy paper, a copy paper regulation guide 1 movable in a direction perpendicular to the conveyance direction of the copy paper
5.15' is attached to the front side of the copying machine main body 17, as shown in FIG.
As shown in FIGS. 5 to 5, a pulse motor 6 serving as a driving source is disposed at the bottom of the manual paper feed table C. A spur gear 10 is rotatably mounted on a shaft 7 protruding from the center of the back side of the frame 12 of the manual paper feed table C by means of a bearing 11.

Further, a timing pulley 9 driven by the pulse motor 6 is fixed to the spur gear IO via a timing belt 8.

The front and back of the spur gear 10 are guided by notched grooves 13 that mesh with the spur gear 10 and are provided in the frame 12 of the manual paper feed stand C in a direction perpendicular to the conveyance direction of the copy paper. A pair of racks 14, 14', which can be slid freely, are installed horizontally.

A copy paper regulation guide 15.15' that protrudes toward the surface of the manual paper feed tray C is fixed to the rank 14.14'.

Also, on the side of the manual paper feed table C, there is the above-mentioned copy paper regulation guide 1.
An origin detection phototube 16 for detecting the origin position during movement of 5.15' is fixed.

The above pulse motor 6, spur gear 10. timing pulley 9
．． Rank 14.14', timing belt 8. The origin detection phototube 16 and the like constitute a driving device.

Next, according to the input signal from the document size detector B,
A control device for controlling the drive device for driving the copy paper regulation guide 15, 15' is a document size detector B.
The computer has a processing device including a CPU for processing input signals from the computer and outputting control signals.

The document size is determined based on the signal output from the light receiving element 5 of the document size detector B, and the pulse motor 6 is driven to move the copy paper regulation guide 15, 15' to a predetermined position. .

Therefore, as shown in FIG. 6, the CPU inputs the signal from the light receiving element 5 of the original size detector B and the signal from the origin detection phototube 16, and also inputs the signal from the light receiving element 5 to the drive circuit that drives the pulsed black. Sends an output with a value corresponding to the signal value from.

Next, the operation of the above embodiment will be explained based on FIGS. 6 and 7.

First, as an initial setting, the original 18 (FIG. 1) is set at a predetermined position on the upper surface of the original platen 3, and the reflector l is closed together with the original cover 2.

Next, the user turns on the power switch, inputs the copying magnification m to be copied onto copy paper, and then inputs the paper regulation guide automatic adjustment key.

As a result, all the light emitting elements 4 are turned on, and the copying machine main body 1
Between the plurality of sets of light-emitting elements 4 and light-receiving elements 5 of the document size detector B provided in 7, light is transmitted through the reflector l, and the reflective surface of the reflector l is covered by the original. This causes light to be blocked.

The size of the document 18 on the document table 3 is detected based on the output from the light receiving element 5 when the light is transmitted or blocked.

At this time, since the ratio of the vertical and horizontal dimensions of the original and copy paper is determined in advance, it is possible to know the size of the original by detecting either the vertical or horizontal dimensions of the original.

The document size detector B shown in FIGS. 1 and 2 measures the longitudinal dimension of the document R+, determines its width dimension, and moves the copy paper regulation guide 15, 15'.

The signal output from the document size detector B is
Next, it is sent to a control device including a CPU, where it
Original size S based on horizontal dimension ratio.

is determined and arithmetic processing is performed together with the previously input copy magnification m to determine the copy paper size S2.

Thereafter, the control device controls the copy paper regulation guide 15.15'
In order to move the copy paper to the width dimension of the copy paper obtained from the above calculation result, a signal is sent to the pulse motor drive circuit that drives the pulse motor 6, which is the drive source thereof.

Then, the rotation of the pulse motor 6 is controlled by the timing belt 8.
Timing pulley9. It is then transmitted via the spur gear 10 to the rack 14, 14'.

Then, the copy paper regulation guide 15.15' fixed to the rack 14.14' is moved in a direction perpendicular to the direction of conveyance of the copy paper, and then stopped at a fixed position.

In this embodiment, rank 14.14' and spur gear 1
In order to eliminate the cumulative error in positional dimensions caused by backlash between We are taking steps to relocate it again. The origin is detected by an origin detection phototube 16.

As described above, copy paper regulation guide 15.15'
By moving to a predetermined position, the copy paper placed on the manual paper feed tray 12 is positioned at a predetermined position, and a copy image without tilt is obtained.

In order to prevent paper from getting caught, the pulse motor 6 does not rotate when the copy paper is on the manual paper feed table C.
The presence or absence of copy paper is detected by pushing the detection lever E on the manual paper feed stand C by the copy paper.

Also, when copy paper of the size detected by the document size detector B is in the paper feed cassette, the paper is fed preferentially from within the paper feed cassette, and the paper is fed from the manual paper feed tray C. Not done.

As described above, the present invention includes a document size detector for detecting the document size, and a copy paper regulating device that is movable in a direction perpendicular to the conveyance direction of the copy paper in order to regulate the width of the copy paper. A copying apparatus comprising: a manual paper feed tray equipped with a guide; and a control device for controlling a drive device for driving the copy paper guide 11 according to input from the document size detector. Since this is an automatic paper regulation guide adjustment device, the copy paper regulation guide can be positioned quickly and with high precision simply by placing the original on the document table.

Therefore, variations due to individual differences among operators can be eliminated, and it is also possible to prevent the copy paper from being skewed, making it possible to always copy at a fixed position on the copy paper.

In addition, since paper jams in the paper feed section of the copying machine are also eliminated, it is possible to reduce the number of failures of the copying machine.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main body of a copying machine showing the attachment state of a document size detector and a manual feed tray used in an adjustment device according to an embodiment of the present invention, and FIG. 2 is a direction in the direction of arrow A in FIG. 1. 3 is a perspective view of a manual paper feed tray that can be used in the above embodiment, FIG. 4 is a bottom perspective view of the manual paper feed tray shown in FIG. 3, and FIG. 6 is a block diagram of the control circuit of the copy paper regulation guide automatic adjustment device according to the above embodiment, and FIG. 7 is a processing procedure in the same embodiment. FIG. (Explanation of symbols) l...Reflector plate 2...Original cover 3...Document stand 4...Light emitting element 5.
...Light receiving element 6...Pulse motor 7...
・Shaft 8...Timing belt 9
...Timing pulley 10...Spur gear 11.
...Bearing 12...Frame 13...
Notch groove 14, 14'...Rank 15.1
5'... Copy paper regulation guide 16... Phototube for origin detection 17... Copying machine main body 18... Original
B...Document size detector C...Manual paper feed tray
D...Drive device E...Detection lever m...Copying magnification S,...Original size S
2... Copy paper size.

Claims (1)

[Claims] a manual paper feed stand equipped with a document size detector for detecting the document size and a copy paper regulation guide movable in a direction perpendicular to the conveyance direction of the copy paper to regulate the width of the copy paper; A copy paper regulation guide automatic adjustment device comprising: a control device that controls a drive device for driving the copy paper regulation guide according to input from the document size detector.