JPH05232762A - Document sheet exhausting device - Google Patents

Abstract

(57) [Summary] [Purpose] A document ejection device for ejecting a document after being read by a reading unit to a tray, and a cut sheet document ejection tray for receiving a cut sheet document and a sheet for receiving a long continuous sheet document. When a long continuous document is ejected and has a long original discharge tray, the original discharge device that passes through the cut paper original discharge tray 2 has a simple structure and is capable of handling cut originals and long continuous originals. (EN) Provided is a document ejection device capable of favorably conveying and accommodating any of them. [Structure] A part of the stack surface of the cut sheet document discharge tray 16 is configured to be movable above the bottom of the sheet document stack surface of the cut sheet document discharge tray as a guide 19 for a long continuous paper document.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document discharge device applicable to a copying machine.

[0002]

2. Description of the Related Art With the spread of computers in recent years,
There is also a demand for a copying system for a copying machine that efficiently copies long continuous paper originals such as computer forms (hereinafter referred to as CF originals).

Therefore, a continuous paper copying system is conceivable in which the normal cut paper original conveyance path and the CF original conveyance path are shared. For example, a document ejection device for ejecting a document after being read by the reading means onto a tray,
A cut sheet original output tray that receives cut sheet originals,
At the downstream side, there is a long document discharge tray that holds long continuous paper documents, and when discharging long continuous paper documents,
By passing through the cut sheet document discharge tray,
It is conceivable that a part of the transportation path is shared.

However, in view of the stacking property of cut paper originals under the situation that the cut paper original discharge tray is getting larger and deeper with the speeding up of copying and the diversification of original thickness. Particularly in the case of a cut-sheet document discharge tray having a steep slope, there is a problem that the CF document is stagnated due to its own weight and folds when the CF document passes through.

That is, a long original discharge tray different from the cut paper original is provided sufficiently below the original conveying path, and when a long continuous paper original is discharged via the cut paper original discharge tray, as shown in FIGS. As shown in FIG. 17, since the cut sheet original discharge tray 1 is lower than the original conveying path 5 and is steeply inclined, the original sheet buckles or sticks at the fold lines 3 and the cut sheet original sheet is discharged. The CF original 2 is stuck on the tray 1 and the original cannot be sent to the long original discharge tray.

In the drawings, reference numeral 3 is a fold line of a CF document,
Reference numeral 4 indicates a contact glass provided on the reading portion of the original.

On the other hand, as a means for satisfactorily discharging a continuous sheet onto a table, there is a technique in which the level difference between the sheet discharge port and the tray is kept constant by the vertical mechanism of the entire table (Japanese Patent Laid-Open No. 61-287654). (See the official gazette).

[0008]

In the prior art, since the entire table is moved up and down, the device becomes large and the mechanism must be complicated.

Therefore, an object of the present invention is to provide an original document ejecting device capable of favorably conveying and accommodating both cut paper originals and long continuous paper originals with a simple structure.

[0010]

In order to achieve the above object, the present invention has the following constitution.

(1). A part of the stack surface of the cut sheet document discharge tray is configured to be movable above a bottom portion of the sheet document stack surface of the cut sheet document discharge tray as a guide for a long continuous paper document (Claim 1).

(2). A part of the stack surface of the cut sheet document discharge tray is movable above the bottom of the cut document stack surface of the cut sheet document discharge tray as a guide for long continuous paper documents, and this guide is long to be conveyed. It should be located approximately at the center of the continuous paper document (Claim 2).

(3). In (2), the guide is within a range in which continuous documents having a plurality of widths to be conveyed overlap each other (claim 3).

(4). In (1) to (3), the guide reaches substantially the same height as the document transport surface immediately before the cut sheet document discharge tray (claim 4).

(5). In (1) to (4), a drive unit for driving the guide, a detection unit for detecting the position of the guide, a detection unit for detecting whether or not a long continuous paper document is set, Control means for controlling the drive means is provided (Claim 5).

[0016]

When the cut sheet is discharged, the cut sheet document discharge tray is used, and when a long continuous document is used, the cut sheet document discharge tray whose height position is partially raised and its A long document discharge tray provided downstream is used.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, FIG. 12 shows the overall structure of a document conveying device of a copying machine using a document discharging device according to the present invention.
14 to FIG. In FIG. 12, reference numeral 6 indicates the body of the copying machine, on which the document feeder 7 is constructed.

The document feeding device 7 has a document feeding table 8 on which a document is placed, a roller 9, a conveyor belt 10, a reverse driving roller 11, a discharge roller 12, and the like. When reading a cut sheet original, the cut sheet original is placed on the original feeding table 8, sequentially separated and fed, and reaches the conveyor belt 10.

A feeding / discharging system for cut sheet originals will be described. Below the belt 10 is a contact glass 13, and a scanner (not shown) as an image reading means is arranged below the contact glass 13. The document is temporarily stopped here, and the image is read by the scanner. After reading, the document is re-fed and discharged onto the cut sheet document discharge tray 16. A sheet reversing device such as a switching claw is provided in addition to the reversing drive roller 11, but these are not directly related to the present invention, and therefore description thereof will be omitted.

Next, a feeding / discharging system for a long continuous paper original will be described. A cover 14 is provided above the roller 9, and the downstream end of the cover 14 is inclined and faces the upstream end of the conveyor belt 10.

The original conveying means 15 including the conveying belt 10, the reversing drive roller 11 and other auxiliary members is configured such that the entire unit accommodating the original conveying means is opened with the back side penetrating the paper surface as a fulcrum. This unit opens below,
It is simply expressed that the document conveying means is opened. Therefore, the contact glass 13 is exposed by lifting the front side of this unit and opening the document conveying means 15.

Next, after opening the original conveying means 15 as described above, the CF original is placed on the original feeding table 1 and the original is unraveled so that the leading end of the original is positioned on the contact glass 4. Then, the document conveying means 15 is closed and the reading operation is performed.

During this reading, the conveyor belt 10 is stopped, and when the reading is completed, it is driven to send out the original. The CF document thus fed goes through the cut sheet document discharge tray 16 to the long document discharge tray 17 shown in FIG. 13 or the long document discharge tray 18 (type to be placed on the floor) shown in FIG.

If the cut sheet document discharge tray 16 is steeply inclined, as described above, the front end of the CF document 2 cannot reach this slope and is stuck.

Therefore, in this example, FIG. 13, FIG. 14 and FIG.
5 is provided with a plate-like guide as indicated by reference numeral 19, and the guide is in the same position as the bottom surface of the stack surface of the cut sheet document discharge tray 16 and in a state in which it is horizontally positioned above the bottom surface. The position and can be selected freely, and when sending a cut sheet original,
It is placed at the same position as the bottom portion, and when the CF document is fed, it is positioned above the bottom portion as shown in these figures.

From the viewpoint of reducing the level difference, the upper position of the guide position is preferably substantially the same height as the document conveying surface immediately before the cut sheet document discharge tray.

In this way, the sheet original is discharged onto the cut sheet original discharge tray 16, and C
The leading edge of the F document can be smoothly guided to the long document discharge trays 17 and 18 by being guided by the guide 19.

Due to its function, the guide 19 is preferably arranged so as to be located substantially at the center of the CF original to be conveyed. In addition, in order to be able to adapt to a case where there are a plurality of types of CF originals to be conveyed, a plurality of types of C
It is necessary that the widths of the F documents are arranged within the overlapping range.

Next, by the function of the guide according to the present invention, C
The state in which the F document is smoothly sent will be specifically described.
FIG. 1 and FIG. 2 show the carrying process when the bottom surface or slope of the cut sheet document discharge tray 16 is rotationally displaced about the left end in the figure as the guide 19.

In this process, the CF original 2 is
Bend downward from the downstream side of the valley fold. If there is nothing (the case shown in FIGS. 15 to 17), the conveyance force from the document conveyance means 15 is not transmitted due to the friction of the slope and the bending of the folds, and a conveyance failure occurs here. In the case of 1 and FIG. 2, since the strain of the CF original is not lost, the conveying force from the conveying unit 15 is transmitted, and the CF original is normally conveyed.

Then, the sheets are stacked on the long document discharge trays 17 and 18 installed below the cut sheet document discharge tray 16.

In the example of FIG. 3, the position of the guide is set higher than in the case of FIGS. 1 and 2, and the guide 190 is moved up to be substantially at the same height as the sheet original conveying path. In this case, since the transfer efficiency of the conveying force by the paper strainer is the highest, the CF original can be guided to the long original discharge trays 17 and 18 in the most stable state.

In any case, the guide 190 is provided with ribs (not shown) along the conveying direction to reduce the contact area between the guide and the original and to reduce the resistance due to friction. ..

The width of the guide 190 is functionally best to be the full width of the CF document to be conveyed. This is because, especially in the case of a wide CF document, if there is no unguided portion, the flexure due to the weight of the paper can be suppressed to the minimum, so that the CF document can be transported in the most stable state.

On the other hand, from the standpoint of preventing conveyance failure due to paper roll-in, it is not always necessary to provide a guide over the width of the CF document. However, if the position of the guide is not appropriate, the carrying state becomes unstable. Therefore, the guide 190 is arranged so as to be at the center of the conveyed CF document. As a result, the CF original document is balanced and conveyed and discharged.

Next, consider a guide for conveying CF originals of different sizes. In the case of the center reference, the same as in the case of a single size, but in the case of the end face reference, it is first conceivable to provide a plurality of guides according to the document width.

However, here, it is considered that one guide is used in common. As shown in FIGS. 4 and 5, in the case of the end face reference, in order to fit both CF originals 2-A and 2-B of different sizes, the size of the guide 19 depends on the size of these originals to be used. It is necessary to set it as an overlapping range.

Further, in this case, the back end surface of the small-sized document needs to be included in the guide surface. From experience, the guide width needs to be about 40 mm or more. In addition, reference numeral 2 in the drawing
The groove indicated by 1 is provided for the convenience of taking out the original.

6 to 9 show specific examples of the guide.
In this example, the guide 190 is the sheet document discharge tray 16
It is stored in a recess 25 formed on the stack surface of the.

As shown in FIGS. 8 and 9, this guide 190 has a pin 190P planted at its downstream end.
This pin is engaged with an elongated hole 16N (see FIG. 7 and FIG. 9) formed in the side wall of the recess and is movable.

When the cut-sheet document discharge tray 16 is set, as shown in FIG. 7, the cut-sheet document discharge tray 16 is hung on the cutout portion of the discharge roller 12 provided on the downstream side of the document conveying means 15. At that time, the pin 190P slides in the elongated hole 16N.
In addition, in order to keep the hanging state, the guide 19
A hook 22 is provided at the upstream end of 0 and is hooked on the side of the document conveying means 15 (see FIG. 9).

Another means for moving the guide will be described.
In the example of FIG. 10, the guide 1900 has an L-shaped side surface, and a fulcrum 40 is provided at a corner portion.
A stringent spring 41 and a solenoid 42 are provided opposite to each other on the tip side of a.

In such a structure, when the solenoid 42 is turned off, the arm 40a is pulled by the spring 41, stored in the sheet original discharge tray 16, and adapted to a cut original.

On the contrary, when the solenoid 42 is turned on, the arm 40a is pulled by the solenoid against the contracting force of the spring 41, and is brought into an upwardly moved state suitable for feeding the CF original document.

This mechanism is particularly effective in FIG.
CF original document detection sensor S1 attached to the CF feed guide 45 located near the CF inlet 44 shown in FIG.
And a signal from an opening / closing confirmation sensor (not shown) of the document feeding means 15 is used to automatically move the guide when the CF document is set in the automatic document feeder.

The control procedure in this case will be described with reference to the flowchart of FIG. 11 and FIGS. 10 and 12.

First, the conveying means 15 is opened, and the CF original entry preventing stopper 43 on the original feeding table 8 is raised,
Open the CF document entry path. Next, the CF document is set in the same manner as described with reference to FIG.

That is, the leading edge of the document is placed on the cover 14
Contact glass 13 through CF inlet 44 in this order
After correctly setting it on the upper side, the document conveying means 15 is closed.

At this time, when the CF original document original detection sensor S1 detects the original, and the control means receives a signal that the original conveyance means is closed from the conveyance means opening / closing detection sensor (not shown), the solenoid 42 operates. Command the drive.

In this case, on the cut sheet document discharge tray 19, the document left unplaced in the previous job is placed in the solenoid 4.
If there is enough weight left to drive 2,
The arm sensor S2 shown in FIG.
Detects that the
When turned off, a warning is displayed to the user to take out the misplaced original on the cut paper original discharge tray 16.

When the CF document reaches the final page as the reading progresses, the CF document detection sensor S1 sends a signal of no paper. When the copying is finished after this, the solenoid 42 is turned off, and the guide 1900 is automatically set in the bottom surface of the stack surface of the sheet document discharging tray, and the sheet document can be copied.

In this example, the spring 41 and the solenoid 42
Represents an example of a drive unit for driving the guide 1900, the arm sensor S2 forms an example of a detection unit for detecting the position of the guide 1900, and the CF document detection sensor S1 sets a long continuous paper document. An example of the detection unit that detects whether or not the drive is performed is configured, and the CPU that executes the flow illustrated in FIG. 11 configures the control unit that controls the drive unit.

According to this example, the continuous continuous paper document is automatically prevented from being defectively conveyed, and when the copying is completed without the user's trouble, the original cut paper document discharge tray is replaced. Can be returned to the state.

[0054]

As described above, according to the present invention, it is possible to provide a document discharge device capable of favorably conveying and accommodating both cut paper documents and long continuous paper documents with a simple structure.

[Brief description of drawings]

FIG. 1 is a diagram illustrating a process of discharging a long continuous paper document by a document discharging device according to the present invention.

FIG. 2 is a diagram illustrating a process of discharging a long continuous paper document by a document discharging device according to the present invention.

FIG. 3 is a diagram illustrating a process of discharging a long continuous paper document by the document discharging device according to the present invention.

FIG. 4 is a plan view illustrating a relationship between a document size and a guide.

FIG. 5 is a perspective view illustrating a relationship between a document size and a guide.

FIG. 6 is a perspective view illustrating a state where the guide is accommodated in a cut sheet document discharge tray.

FIG. 7 is a perspective view illustrating a state where the guide is moved upward.

FIG. 8 is a front view of a guide.

FIG. 9 is a diagram for explaining how the position of the guide changes.

FIG. 10 is a diagram illustrating a configuration for automatically displacing a guide.

FIG. 11 is a flowchart illustrating a guide position control procedure.

FIG. 12 is a diagram illustrating an overall configuration of a document feeding device of a copying apparatus in which the document discharging device according to the present invention is used.

FIG. 13 is a perspective view illustrating a discharged state of a long-role continuous paper original.

FIG. 14 is a diagram illustrating a positional relationship between long document discharge trays.

FIG. 15 is a diagram illustrating a process of discharging a long continuous paper original according to the related art.

FIG. 16 is a diagram illustrating a process of discharging a long continuous paper original according to the related art.

FIG. 17 is a diagram illustrating a process of discharging a long continuous paper original according to the related art.

[Explanation of symbols]

 2 Long continuous paper document 16 Cut paper document discharge tray 19 Guide 190 Guide 1900 Guide

Claims (5)

[Claims] 1. A document ejection device for ejecting a document read by a reading means to a tray, wherein a cut sheet document ejection tray for receiving a cut sheet document and a long document ejection for receiving a long continuous sheet document. When ejecting a long continuous paper document that has a tray, in the document ejection device that goes through the cut paper document ejection tray, use part of the stack surface of the cut paper document ejection tray as a guide for the long continuous paper document. A document ejection device characterized in that the document ejection device is movable upward from the bottom of the sheet document stacking surface of the cut sheet document ejection tray. 2. A document ejection device for ejecting a document read by a reading means onto a tray, the cut document ejection tray receiving a cut sheet document, and the long document ejection tray receiving a long continuous sheet document. When ejecting a long continuous paper original, in the original discharge device that passes through the cut paper original discharge tray, a part of the stack surface of the cut paper original discharge tray is used as a guide for the long continuous paper original. It is movable above the bottom of the stack of cut documents on the cut sheet document output tray, and
An original document ejecting device characterized in that the guide is positioned substantially at the center of a long continuous paper original document to be conveyed. 3. The document ejecting device according to claim 2, wherein the size of the guide is within a range in which continuous documents having a plurality of widths to be conveyed overlap each other. 4. The document ejection device according to claim 1, wherein the guide reaches substantially the same height as the document conveyance surface immediately before the cut sheet document ejection tray. 5. The driving means for driving the guide, the detection means for detecting the position of the guide, and the detection of whether or not the long continuous paper document is set according to any one of claims 1 to 4. An original document ejecting apparatus comprising: a detection unit and a control unit for controlling the driving unit.