JPS61278872A - Original checker in image forming device - Google Patents

Abstract

PURPOSE:To permit easy setting of an original and to prevent mis-copying by projecting an original tray from the body of an image forming device and checking the condition of the original so that the original can be set in the set state. CONSTITUTION:A feed cassette 1 is mounted to the copying machine body A below the position where the original tray 12 projects from the copying machine body A. The cassette 1 has a cap 1a and a mirror 26 is provided to the cap 1a. The entire part of the original 21 imposed on the original platen 22 of the original tray 12 projecting from the body A is projected on the mirror 26. The mirror 26 is not always required to be provided to the cap 1a of the cassette 1 and may be provided attachably and detachably to the side plate of the body A; in other words, the provision of said mirror in the position where the entire part of the original 21 is projected is satisfactory. The entire part of the tray 12 is not always required to be projected and the purpose of this invention is attained if the entire part of the original 21 imposed on the platen 20 of the tray 12 can be moved to the extent of being projected on the mirror 26.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a document confirmation device in an image forming apparatus, and particularly to a device for confirming a document placed on a transparent document placement surface while the document is still set. The present invention relates to a document confirmation device in an image forming apparatus that is capable of performing the following operations.

[Prior art]

Normally, in an image forming apparatus such as a copying machine, the original is placed on a transparent original placing plate provided on the top of the copying machine with the side to be copied of the original being in contact with it, and a switch is operated. Therefore, copying was performed by moving the original placing plate provided therein, or by moving the light source, etc.

In this way, copying is carried out with the side on which the image of the original is drawn in contact with the original placing plate, so when copying, the operator can only see the side of the original that is not to be copied, that is, the back side. become.

However, when copying or masking multiple originals, it is necessary to check the condition of the originals placed on the original plate, otherwise the position of the originals may be shifted, resulting in copying errors or mistakes. Since it requires copying, it is necessary to make copies repeatedly, which requires time and paper, which is uneconomical.

[Problem that the invention seeks to solve]

Therefore, in order to eliminate such inconvenience.

A method was also devised to install a mirror inside the copying machine and check the original placed on the original plate (-S-, as an example in 1983-
No. 170844).

However, when a mirror is provided inside the copying machine as described above, the internal space increases and the copying machine becomes larger.

Furthermore, an illumination mechanism for illuminating the mirror is required inside the copying machine, resulting in a disadvantage that the structure of the copying machine itself becomes complicated. Therefore, there has been an urgent need to develop a document checking device for copying machines and other image forming apparatuses that has a simpler structure.

[Means for solving problems]

Therefore, this invention focuses on the above problems.

It is something that has been done.

A document table that can be moved to a position where an original to be copied is placed and the entire original protrudes from the image forming apparatus main body, and a mirror that can reflect the entire original at the position where the original is protruded from the image forming apparatus main body. It is an object of the present invention to solve the above-mentioned problems by providing means for a document checking device in one image forming apparatus having the following features.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS How the configuration of the present invention is actually implemented will be explained below with reference to the drawings, together with its operation.

FIG. 1 is a cross-sectional view of a copying machine equipped with a document checking device according to an embodiment of the present invention, and A in the figure is a main body of the copying machine. A paper feed cassette 1 (the structure of this paper feed cassette 1 will be described later) containing a paper feed cassette 1 is attached. A paper feed roller 2 for feeding copy paper is provided above the paper feed cassette 1, and the copy paper fed by the paper feed roller 2 passes through guide plates 3, 3' and passes through registration rollers 4, 4. ′.

A photosensitive drum 6 whose entire circumferential surface is coated with a photosensitive layer (not shown) is rotatably mounted approximately in the center of the copying machine main body A. The structure of the placing table 12 will be described in detail later).
The light projected onto the original 21 (Fig. 3) placed on the original 21 (Fig. 3) placed at An electrostatic latent image is formed on the photosensitive layer uniformly charged by the corona discharger 7.

The electrostatic latent image formed on the photosensitive layer is visualized by a developing device 8.

The copy paper conveyed to the registration rollers 4, 4' is fed so as to come into close contact with the photosensitive layer and is transferred by the transfer corona discharger 9. The transferred copy paper is peeled off by a separating corona discharger 10 and conveyed by a conveyor belt 15 to fixing rollers 16, 16'. Fixing roller 1
The copy paper fixed at 6 and 16' is placed on the guide plate 17 and 17.
The copy tray 19 is discharged via discharge rollers 18 and 18'.

- The toner remaining on the force-sensitive layer is cleaned by the IJ cleaning device 11.

By the way, as shown in FIGS. 2 and 3, the document placing table 12 includes a transparent document placing plate 2 on which a document 21 is placed.
0 is fitted, and this document mounting metal fitting 2 moves the upper surface portion 22 of the copying machine main body A, that is, the document 21 moves on the upper surface portion 22 of the copying machine main body A.

This is a method in which the original table is moved and exposed.

A pair of rails 23 and 23' are provided on the upper surface 22 of the copying machine body in order to move the original table 12.
A pair of rails 29 and 29', which are opposite to these rails 23 and 23' and have a similar configuration, are fixed to the back surface of the original table 12. Between them are a pair of sliders 24, 24'.
are slidably fitted.

Then, as shown in FIG. 1, the original table 12 is placed.

In the initial state when the power is turned on, the pinion 22b
Since the moving means consisting of a rack (not shown) fixed to the back surface of the document table 12 is not driven, it is at the position shown by the solid line. When the cashier presses the copy start button, the document mounting table 12 moves to the left as shown by the two-dot chain line ■.

As the document table 12 moves to the left, the copy paper is fed, and when the leading edge contacts the registration roller 4 and the paper feeding operation is completed, the document table 12 moves to the right as shown by the broken line ■. , exposure work is performed by this movement to the right.

In this case, their movement range is at both ends 1 of the document placement table 12.
2a and 12b are within a range that does not expose the exposure aperture 25 formed on the upper surface 22 of the copying machine main body A, so the pinion 22b is adjusted so that there is no risk of fingers or the like coming into contact with the exposure aperture 25 and getting jammed. Rotational drive control or a stopper prevents the original table from moving further to the left or right.

This document mounting table 12 is attached to an upper surface 22 to the main body of the copying machine.
In addition, as shown in FIG. 3, the entire original table 12 can protrude beyond the main body A of the copying machine. That t-kome manuscript 21
It also protrudes from the main body A of the copying machine. Note that the original mounting table 1 is used to protrude the original mounting table 12 from the copying machine main body A.
The movement of item 2 may be performed with one hand after releasing the driving force from the drive system using a clutch or the like of the pinion 22b or releasing the stopper, but it may be moved using power using some kind of driving means. It is.

A paper feed cassette 1 is attached to the copying machine main body A below the position where the document mounting table 12 protrudes from the copying machine main body A. The paper feed cassette 1 includes a lid 1a, and a mirror 26 is provided on the lid 1a. The entire original 21 placed on the original placing plate 22 of the original placing table 12 protruding from the main body A of the copying machine is reflected on this mirror 26. This mirror 26 does not necessarily need to be placed on the lid 1a of the paper feed cassette 1, but may be provided in a removable manner on the side plate of the copying machine main body A, as long as it is in a position where the entire original 21 can be reflected. . However, by forming the mirror 26 on the top surface of the lid 1a of the paper feed cassette 1 in this way, it can also be used as the lid 1a of the paper feed cassette 1, which saves on parts and simplifies the mechanism. be.

Further, in this embodiment, the entire document mounting table 12 is used.

Although it is made to protrude from the copying machine main body A, it is not necessary to make the entire document placement table 12 protrude; in short, the document placement table 1
The entire original 21 placed on the original placing plate 20 of No. 2 is
It is sufficient if the object can be moved to the extent that it is reflected in the mirror 26.

It is desirable that the exposure opening 25 be closed by some means when the original table 12 is moved to an apparatus consisting of the copying machine main body A as shown in FIG.

Note that 27 is a toner supply port, and this toner supply port 27 is closed. Reference numeral 28 denotes a document holding plate that presses down the document 21 placed on the document placement plate 20.

Next, the operation of the document checking device having the above configuration will be explained. Under normal conditions, the entire document table 12 does not protrude from the copying machine body A as shown in FIG. 2, and copies are made.
Therefore, the entire image-eating moth of the original 21 is not protruded from the main body A of the copying machine.

However, when copying the originals 21 by overlapping them,
When masking is to be performed, the driving force of the pinion 22b is released or the stopper is released, and the original placing table 12 is moved by hand or other means as shown in FIG. As a result, the entire document 21 also protrudes from the copying machine main body A.

When the original 21 protrudes from the copying machine main body A, the surface to be copied of the original 21 is reflected on the mirror 26 located below, as shown in FIG. 4, and is reflected as shown by the imaginary line. This can be confirmed by the worker 28. That is, the document 21 can be observed from the back side while it is set.

FIG. 5 shows another embodiment of the document checking device of the present invention,
This is a copying machine with a fixed document table and a document confirmation device applied thereto. In the figure, A is a copying machine main body, and a document mounting table 12 is fixed to the upper surface of the copying machine main body A, and an original is placed on the document mounting surface (not shown) of this document mounting table 12. (
(not shown), an optical system built into the main body A of the copying machine moves to perform exposure.

Then, only when you set the original and want to check the entire original while it is set, move the original placing table 12 to the right as shown by the imaginary line so that it protrudes beyond the main body A of the copying machine.
The entire document is reflected on a mirror 26 formed on the lid 1a of the paper feed cassette 1 located below, so that the state in which the document is placed can be checked. Note that the conveyance, transfer and fixing devices, etc. provided within the main body of the copying machine are not directly related to the gist of the present invention, and therefore their explanation will be omitted.

Furthermore, it goes without saying that this document checking device can also be applied to a document reading section of an image forming apparatus such as a digital copying machine.

[Effects of the present invention]

As described above, according to the present invention, the document placement table is made to protrude from the main body of the image forming apparatus to check the condition of the document, so that it is possible to check the document while it is set, and as a result, it is easier to set the document. This is economical because it prevents copy errors from occurring and prevents the use of more sheets than necessary.

In addition, since the original table is moved and the mirror is provided to protrude from the image forming apparatus main body, there is no need to incorporate the mirror into the image forming apparatus main body, and as a result, the image forming apparatus becomes compact and inexpensive. It has advantages such as being able to be manufactured.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of a copying machine equipped with a document checking device for an image forming apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of FIG. 1, and FIG. FIG. 4 is a perspective view of the part protruding from the main body, FIG. 4 is an explanatory diagram of the operation of the document checking device, and FIG. 5 is another embodiment of the document checking device. A: Copy machine main body 12: Original stage. 21... Manuscript, 26...
mirror.

Claims (3)

[Claims] (1) A document mounting table that can place a document for copying and move to a position where the entire document protrudes from the image forming apparatus body, and a document table that displays the entire document at the position where it protrudes from the image forming apparatus body. A document confirmation device in an image forming apparatus, which is equipped with a mirror that can perform (2) The image according to claim 1, wherein the mirror capable of reflecting the entire document at a position protruding from the main body of the image forming apparatus is formed on a lid of a paper feed cassette. A document confirmation device in a forming device. (3) According to claim 1, the mirror capable of reflecting the entire document at a position protruding from the image forming apparatus main body is detachably attached to the image forming apparatus main body. A document confirmation device in an image forming apparatus.