JPS6383718A - Original circurating and paper feeding device - Google Patents

Abstract

PURPOSE:To improve the efficiency of work by constituting such that an original is exposed in its home position in a sheet through mode, and stopped in an original stop position in a scan mode so as to scan and exposure the original. CONSTITUTION:In the sheet through mode, a solenoid is turned off, and a changeover lug 27 projects from a 1st mirror 15. The original 15 is sent to bending part consisting of a guide body 16 and a guide roller 17, the original 15 is sent to a discharge roller 18 by the roller 17, and is again set to an original table 1. In the scan mode, the separated original 5 passes by the 1st mirror 15. Since in that mode the changeover lug 27 retreats backward the 1st mirror 15 due to the attracting action of the solenoid, the original 5 is sent to a 2nd conveyance belt unit 21. The original 5 stops is the original stop position A of a 2nd mirror 22, and scanned and exposed. Upon the completion of the exposure, the one side original instantaneously passes through an inversion conveyance part and set to the original table 1 again. Thus, the efficiency of work can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a document circulation feeding device, and more particularly to a document circulation feeding device that can use both a sheet-through mode and a scan mode.

(Prior Art) Conventionally, a through-mode automatic document feeder IQ apparatus has been provided with a manual mirror and a thick plate to accommodate separate thick plate-type books.

For this reason, since the manual mirror and the thick plate are provided, it takes time to set it up, and there are problems in that it is easy to make mistakes and that work efficiency is poor.

(Objective) It is an object of the present invention to solve the above-mentioned problems of the prior art and to provide an original $+1 circulating sheet feeding device in which the sheet-through mode and scan mode can be switched to 1, and the work efficiency is high. .

(Structure) In order to achieve the above-mentioned object, the present invention exposes the original at the home position in the sheet-through mode and exposes the original in the scan mode in a bottom-feed original fIS circulation paper feeding device with reverse page feeding and facing the original upward. The document is characterized in that it is configured to stop the document at the stop position and perform scanning exposure, and is characterized in that it is configured such that the document is stopped at the stop position and the document is scanned and exposed. The present invention is characterized in that the mirror and the first conveyor belt unit are connected to the second mirror and the second B conveyor belt unit used in the scan mode.

Hereinafter, the present invention will be specifically explained based on examples.

FIG. 1 is an overall front view showing the first embodiment of the present invention, FIG. 2 is a front view showing details of the seat-through position portion of the same embodiment, and FIG. 3 is a front view showing the switching mechanism portion of the same embodiment. It is a diagram.

A calling roller 2 and a brush roller 3 are arranged downstream of the inclined document table 1 in the document conveyance path, and a blocking belt 4 made of an elastic material is also provided, and a reversing/separating device that engages with the blocking belt 4 to separate the document 5. Further downstream, a guide roller 7 for feeding the document in a switchback manner, and sensors 8, 9, and 10 for detecting the document are provided before and after the guide roller 7, and registration rollers 1) are provided. Further downstream, there is a first conveyor belt unit 1 having a belt 13 installed over a pair of rollers 12a and 12b.
4 and a first mirror 15 are arranged.

The first conveyance belt unit 14 and the first mirror 15 are used during the document through mode, and above the first conveyance belt unit 14 are a guide roller 17 and a guide FL 16 that are used only during the through mode. will be placed. A discharge roller 18 is provided at the end of the guide plate 16.

Continuing from the first conveyor belt unit 14, a second conveyor belt unit 21 having a belt 20 suspended between a pair of rollers 19a and 19b and a second mirror 22 are arranged. The second conveyor belt unit 21 and the second mirror 22 are used during the original scanning mode, and the second conveyor belt unit 21 and the second mirror 22 are
A known document reversing section 23 is provided at the left end of the conveyor belt unit 21 . Also, the second conveyor belt unit 2
A guide plate 16 and a group of conveying rollers 25 constituting a reversing conveying section 24 are provided above the paper sheet 1 to convey the original to the ejection roller 18.

The lower part of the first conveyor belt unit 14, that is, the first
The mirror 15 portion becomes the home position control H in the sheet through mode, and the document is stopped at the left end portion of the second conveyor belt unit 21 to become the document stopping position A, and scanning in the scan mode is performed from the position of the second mirror 22. It will be started.

Further, a switching mechanism as shown in FIG. 3 is provided between the first conveyor belt unit 14 and the second conveyor belt unit 21. That is, a through hole 26 is formed between the first mirror 15 and the second mirror 22, and this through hole 26
A switching claw 27 is disposed so as to be retractable and appear in the lower part of the switching claw 27, and a link 28 is rotatably provided at the lower part of the switching claw 27. This link 28
An upper pressure spring 29 is attached to the left end to urge the link 28 upward, and the right end is rotatably supported by a support shaft 30. Furthermore, a spring 31 is attached to the middle part of the link 28.
A solenoid 32 is connected via.

When the solenoid 32 is in the suction state, the switching pawl 27 is set in the retracted state shown by the two-dot chain line via the link 28 and against the force of the upper pressure spring 29, and when the solenoid 32 is in the off state, the upper pressure spring 29 Due to the force, link 2
The switching claw 27 is made to protrude outside the through hole 26 via the opening 8.

With this configuration, when in sheet-through mode,
As shown in FIG. 4, when a large number of originals 5 (the part with a - mark is the front side) are loaded on the original table 1 and the main switch (not shown) is turned on, the originals 5 are placed on the blocking belt 4.
The sheets are separated one by one by a separation roller 6 and fed.

The document 5 is guided by the guide roller 7 of the paper feed reversing section,
When the rear edge of the document 5 is detected by the sensor 9, the guide roller 7 reverses and switches back, and the registration roller 1)
be guided by. Further, the document 5 is guided to the 1v1) conveying belt unit 14, and is connected to a fixed optical system (not shown).
is guided to the first mirror 15 simultaneously with the exposure operation.

In this sheet-through mode, the solenoid 32 is in the OFF state, and the switching pawl 27 is in the first mirror 1 as described above.
The document 5 is sent to a curved portion R formed by a guide body 1G and a guide roller 17, and further fed to a discharge roller 18 by the guide roller 17, and then set on the document table 1 again.

In addition, in the scan mode, as shown in FIG. Since it has retreated downward, it is sent to the m-th feeding belt unit 21. Then, the original 5 is stopped at the original stopping position A of the second mirror 22, and is scanned and exposed. When the exposure is completed, in the case of a single-sided original, the original immediately passes through the reversing conveyance section 24 and is reset on the original table 1.

In the case of a double-sided original, the original 5 is reversed by the original reversing unit 237 and set on the contact glass of the second mirror 22.
When the back side is exposed, it is reversed again, passes through the reversing transport section 24, and is reset onto the document table l.

As described above, in the sheet-through mode, the path length of the document is short, so work efficiency is good and jam removal is easy. In addition, since the scan mode can be easily switched, copying of double-sided originals can be easily performed.

A second embodiment of the switching a-barrel is shown in FIGS. 6 and 7. Second
In the description of the embodiment, members corresponding to those explained in the first embodiment are given the same reference numerals.

In the same figure, a switching pawl 27 rotatably supported in the center
The left end protrudes or retreats with respect to the reversing conveyance section 24, and when the switching claw 27 protrudes, the document is guided to the guide roller 7 portion of the paper feed reversing section X, and the switching claw 27
When retracting, the document is reversed l1) and is conveyed as it is through the feeding section 24 and fed to the discharge roller 18.

The switching pawl 27 is switched by a solenoid 32 and a tension spring 40, and when the solenoid 32 is in the OFF state, the tension spring 40 causes the switching pawl 27 to be retracted from the reversing conveyance section 24 as shown by a two-dot chain line, and the sheet feeding reversing section Close the passage in the direction. Also, turenoid 3
In the suction state 2, the switching pawl 27 is rotated clockwise against the force of the tension spring 40, the reversing conveyance section 24 is closed, and the passage in the X direction of the sheet feeding reversing section is opened. In this embodiment, as shown in FIG. 8, the conveyor belt 41 and mirror 42 may be integrated.

Therefore, in the case of double-sided originals in the sheet-through mode, as shown in FIG. 8, the first front side original 5 will have the flow shown in ■, and the second back side will have the flow shown in ■. . In this mode, the switching claw 27 closes the reversing conveyance section 24 by the suction operation of the solenoid 32 as described above.
A passage in the X direction is opened in the paper feed reversing section.

Also, in the seat-through mode, the first mirror 15
The home position H of the portion becomes the exposure position, and in the scan mode, the document stop position A of the second mirror 22 portion becomes the scan start position.

As described above, the switching claw 27 of the second embodiment is used to switch the paper feed between a double-sided original and a single-sided original, but it can also perform effective processing when jammed transfer paper occurs. That is, when jammed paper occurs, the above-mentioned double-sided document feeding state is automatically set, transfer paper feeding is stopped from the paper feeding section, and only the document corresponding to the jammed paper is transferred to the paper feeding reversing section X using the switching claw 27. By feeding the document in the direction of -, feeding it blankly over the contact glass, inverting the document at the document reversing unit 23, sending it again to the contact glass, exposing it, and copying it onto new transfer paper, you can immediately deal with jam problems. It will be possible.

Finally, the document corresponding to the jammed paper is ejected from roller 1.
8 and is discharged onto the document table 1, the normal state is restored and normal copying operations are sequentially performed.

In this way, in the second embodiment, it is possible to expose both single-sided and double-sided originals even in the sheet-through mode, and it is also possible to automatically correct jam processing, which eliminates copy mistakes and prevents blank feeding of originals. The purity of
Reduces damage to manuscripts.

(Effects) As explained above, the present invention has a configuration that allows easy switching between the sheet-through mode and the scan mode.
It is possible to provide a document Va ring feeding device with good work efficiency.

[Brief explanation of the drawing]

1 to 5 show a first embodiment of the present invention, FIG. 1 is an overall front view, FIG. 2 is a front view showing the seat-through position, and FIG. 3 is a front view showing the switching mechanism. Figure 4 is a diagram explaining the paper feeding state in sheet-through mode, Figure 5
The figure is a diagram explaining the paper feeding state in scan mode, Figures 6 to 8 show a second embodiment of the present invention, Figure 6 is a front view showing the main parts, and Figure 7 is a switching mechanism section. FIG. 8 is a diagram illustrating the paper feeding state in the case of a double-sided document. 14... First conveyor belt unit, 15... First mirror, 21... Second conveyor belt unit, 22...
Second mirror, A...document stop position, H...home position. 1 z Figure 2 Figure 30 Figure 4

Claims (2)

[Claims] (1) In a downward-feeding original circulation feeding device with reverse page feeding and facing upwards, exposure is performed at the home position in sheet-through mode, and in scan mode, the original is stopped at the original stop position and scan exposure is performed. A document circulation feeding device characterized in that it is configured as follows. (2) In a reverse-page-feed, top-side-side downward-feeding document circulation feeding device, a first mirror and a first conveyor belt unit are used in the sheet-through mode, and a second mirror and a second conveyor belt unit are used in a scan mode. A document circulation feeding device characterized in that it is connected to a conveyance belt unit.