JP2000076515A - Processor for sheet paper or the like and method for eliminating paper dust - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a processor for sheet paper or the like and a dust eliminating method which eliminate paper dust, etc., by blowing air against them without blowing air upon sheet paper or the like. SOLUTION: This processor contains a light emitting unit 3 and a light receiving unit 5 which read sheet paper or the like P carried in an intermittent way, an eliminating device 30 which blows air upon these units 3 and 5 to eliminate paper dust on the units 3 and 5 and a controller 47 which controls the operation of the eliminating device 30 and operates the device 30 by utilizing time from after the preceding sheet paper or the like P passes through the units 3 and 5 until the subsequent sheet paper or the like P is carried into the units 3 and 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet processing apparatus for transporting and reading paper sheets and a paper dust removing method.

[0002]

2. Description of the Related Art A sheet processing apparatus of this type takes out a sheet from a take-out section and conveys the sheet along a conveyance path. Processing such as recognition or recording on an optical disk is performed.

A reading device has a light-emitting unit and a light-receiving unit which are opposed to each other via a transport path, and emits light from the light-emitting unit toward the light-receiving unit to obtain an image of a paper sheet. I have.

Incidentally, the light emitting unit and the light receiving unit are arranged close to a paper sheet transport path in order to increase the efficiency of light projection and light reception. Also, since the paper sheets are conveyed while being clamped by the conveyance belt, when the paper sheet passes through a bent portion of the conveyance path,
Paper dust is scattered from the paper sheet at a portion where the paper sheet is changed. For this reason, the paper dust and the like that the paper sheets scatter adhere to the light emitting surface of the light emitting unit, the light receiving surface of the light receiving unit, and the like.

As described above, if paper dust adheres to the light emitting surface or light receiving surface of the reading device, the light emission efficiency is reduced or the light receiving signal is adversely affected. 2. Description of the Related Art Paper dust is removed when the apparatus is stopped using a machine, compressed air, or the like, and paper dust is constantly removed by blowing air on a light emitting surface or a light receiving surface.

[0006]

However, in the method of removing paper dust from the reading apparatus when the apparatus is stopped, paper dust may be accumulated too much during operation of the apparatus, and the reading apparatus may malfunction. In this case, the operation of the apparatus is stopped and the reading apparatus is cleaned, which causes a reduction in the operation efficiency of the apparatus.

In the method in which air is constantly blown to the reader, the light emitting surface and the light receiving surface are close to the transport path as described above. Will be given. When the papers rampage,
Since the detection position of the paper sheet is not constant, the read signal is also adversely affected.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made in consideration of the above circumstances. It is an object to provide an apparatus and a method for removing paper dust.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a reading device for reading intermittently conveyed paper sheets, and blowing compressed air to the reading device. Removing means for removing an object to be removed from the reading means, and controlling the operation of the removing means. After a preceding sheet has passed through the reading means, a succeeding sheet is read by the reading means. And control means for operating the removing means by utilizing the time until it is sent to the cleaning device.

According to a second aspect of the present invention, there is provided a light emitting unit for irradiating light to a sheet conveyed intermittently and a light receiving unit for receiving light from the sheet irradiated by the light emitting unit. Reading means, a removing means for blowing compressed air to the light emitting unit and the light receiving unit of the reading means to remove an object to be removed from the light emitting unit and the light receiving unit, and controlling the operation of the removing means. And control means for operating the removing means using the time from when the paper sheet to be passed through the reading means to when the subsequent paper sheet is sent to the reading means.

According to a fourth aspect of the present invention, there is provided a reading means for reading sheets conveyed intermittently, a blowing means facing the reading means, an air compressor connectable to the blowing means, the air compressor, Switching means for connecting to the blowing means, wherein the blowing means blows compressed air from the blowing means to the reading means in a state where the blowing means and the air compressor are connected by the switching means. A removing unit for removing an object to be removed and a switching operation of the removing unit by the switching unit are controlled. After a preceding sheet passes through the reading unit, a succeeding sheet is read by the reading unit. Control means for controlling the connection between the spraying means and the air compressor during the time before the air is sent to the air compressor.

According to a fifth aspect of the present invention, there is provided a light emitting unit for irradiating light to a sheet conveyed intermittently and a light receiving unit for receiving light from the sheet irradiated by the light emitting unit. A reading means, a blowing means facing the light emitting unit and the light receiving unit of the reading means, an air compressor connectable to the blowing means, and a switching means for connecting the air compressor and the blowing means, Removing means for removing compressed objects on the reading means by blowing compressed air from the blowing means to the reading means in a state in which the blowing means and the air compressor are connected by the switching means; and the removing means. And controls the switching operation of the switching means. After the preceding sheet has passed through the reading means, the succeeding sheet is sent to the reading means. Wherein said blowing means to the time until the written and a control means for connecting controls the air compressor.

According to another aspect of the present invention, there is provided a method for conveying a sheet to a reading unit while providing a predetermined time interval in a non-conveying state.
A second step of blowing compressed air to the reading means during the predetermined time interval by the first step; and a step of blowing the compressed air at the time of blowing the compressed air in the second step. A third step of stopping the blowing of the compressed air to the reading means when the conveyance is started.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 is a schematic view of a sheet reading apparatus as a sheet processing apparatus. Sheet reader 1
Has a light emitting unit 3 and a light receiving unit 5. The film-like paper sheet P whose image can be easily read by irradiating the transmitted light is supplied between the light-emitting unit 3 and the light-receiving unit 5 with the substantially central portion held between the transport belts 7a and 7b. It has become.

The light emitting unit 3 has an opening 9 on a surface facing the paper sheet P, and irradiates light to the paper sheet P being conveyed through the opening 9. The light receiving unit 5 captures the transmitted light of the paper sheet P as an image. The image of the sheet P taken here is processed by the processing unit 1 connected to the light receiving unit 5.
At 1, character recognition processing is performed. Of course, this processing unit 1
The processing in 1 is not limited to the recognition processing, but may be, for example, processing for recording on an optical disk.

FIG. 2 is a perspective view of the light emitting unit 3 shown in FIG. The light emitting unit 3 has a dustproof structure, and a lamp 13 is provided inside. The opening 9 is formed in the upper surface of the light emitting unit 3 as described above, and the quartz glass 15 is fitted into the opening 9. The lamp 13 is opposed to the quartz glass 15 and emits light upward through the quartz glass 15. On one side of the upper surface of the quartz glass 15, there is provided a first
The air outlet 31a of the air nozzle 31 is closely opposed.

FIG. 3 is a partially cutaway perspective view showing the light receiving unit 5 shown in FIG. The light receiving unit 5 has a dustproof structure, and a light receiving element 17 is provided inside. An opening 19 is formed in the lower surface of the light receiving unit 5, and a quartz glass 21 is fitted into the opening 19. The light receiving element 17 is opposed to the quartz glass 21, and receives light transmitted from the light emitting unit 3 and transmitted through the paper sheet P via the quartz glass 21 (takes in as an image).
The image captured by the light receiving element 17 is the processing unit 1 described above.
1 and subjected to character recognition processing. Quartz glass 2
An air outlet 32a of a second air nozzle 32 of a paper dust removing device 30, which will be described later, is in close proximity to one side of the lower surface of 1.

FIG. 4 shows a light emitting unit 3 and a light receiving unit 5.
FIG. 2 is a schematic view of a paper dust removing device 30 for removing paper dust as an object to be removed that accumulates in the quartz glass 15 or 21 of FIG. As described above, the paper dust removing device 30 is provided with the blowout ports 31 a, the quartz glass 15, 21 of the light emitting unit 3 and the light receiving unit 5.
First and second air nozzles 31, 32 facing 32a
It has. First and second hoses 34 and 35 are connected to the first and second air nozzles 31 and 32, respectively. The first and second hoses 34 and 35 are connected to a third hose 37 via a pipe joint 36. The third hose 37 is connected to the first boat 41 of the electromagnetic valve 39. An air compressor 46 is connected to a second boat 42 of the electromagnetic valve 39 via a fourth hose 44.

The electromagnetic valve 39 has a first mode in which the second port 42 and the third port 43 are connected by a signal to disconnect the first port 41, and the second boat 42 and the first port 41
And a controller 47 for switching between two modes of a second mode for disconnecting the third port 43 by connecting the second port 43 and the third port 43 is connected. The third port 43 of the electromagnetic valve 39 is open to the atmosphere.

By the way, in the apparatus to which the present invention is applied, as shown in FIG. 5, it takes 4.0S during the time of taking out the paper sheet P, and the paper sheet is taken until the next paper sheet P is taken out. The interval time during which P is not conveyed takes 0.7S. The controller 47 uses this interval time (0.7 S) to blow air to the light emitting unit 3 and the light receiving unit 5 only during this time to remove paper dust,
While the sheet P is being conveyed, the air is stopped so as not to affect the conveyance.

Next, the operation of the paper dust removing device 30 will be described with reference to the flowchart of FIG. First, when the machine is turned on by the operator (S1), the air compressor 46 starts operating (S2). The air compressor 46 always operates when the machine power is turned on. At this time, the second mode is set by the controller 47,
The first port 41 and the second port of the electromagnetic valve 39 are connected (S3). Thereby, the air compressor 46
Compressed air discharged from the first and second air nozzles 3
The quartz glass 15 and 21 of the light emitting unit 3 and the light receiving unit 5 are sprayed through 1 and 32, thereby removing dirt such as paper powder attached to the quartz glass 15 and 21. When the operation of the machine is started by the operator (S4), the controller 47 monitors whether or not the unloading of the sheet P is started by a supply unit (not shown) (S4).
5). When the removal of the paper sheet P is started (S5-YE
S), the controller 47 sets the first mode, and the second port 42 and the third port 43 of the electromagnetic valve 39 are connected (S6). As a result, the compressed air is released from the third port 43, and the compressed air does not come out of the first and second air nozzles 31 and 32. At this time, the blowing time of the compressed air is controlled by the operation start time.

The controller 47 monitors whether or not the removal of the sheet P is stopped during the removal (S7). The monitoring method includes, for example, the time for taking out the paper sheet P.
Since it is determined to be 0S, the determination is made after confirming 4.0S from the determination in S5. In addition, a sensor may be provided in a supply unit (not shown), and it may be determined that the unloading has stopped at the place where the break in the sheet P is detected by the sensor. When the removal of the paper sheet P is completed (S7-YES), the controller 4
7, the second mode is set, and the compressed air discharged from the air compressor 46 is supplied to the air nozzles 31 and 32.
Is blown onto the quartz glass 15, 21 of the light emitting unit 3 and the light receiving unit 5, thereby removing dirt such as paper dust attached to the quartz glass 15, 21 (S 8). The blowing of compressed air in S8 is 0.7
This is performed during S. Next, the controller 47 subsequently monitors whether or not the machine is operated (S9). If the operation is continued (S9-NO), the process returns to S5. When the operation is stopped (S9-YES), after the machine operation stop processing is performed (S10), the power of the machine is turned off by the operator (S11), and the sheet reading apparatus 1 and the paper dust removing apparatus. The process of 30 ends.

As described above, after the preceding sheet P is supplied and passed through the sheet reading apparatus 1, the succeeding sheet P
By operating the paper dust removing device 30 using the time (interval time) until the paper P is sent to the paper sheet reading device 1 and blowing the compressed air to the light emitting unit 3 and the light receiving unit 5, the paper paper P is excellent. And information on the paper sheet P can be stably obtained.

[0024]

As described above, according to the present invention, the removal means is used by utilizing the time from the time when the preceding sheet passes through the reading means to the time when the succeeding sheet is fed to the reading apparatus. Since the apparatus is operated to blow air to the reading means to remove the object to be removed, air is not blown to the sheets passing through the reading means as in the related art. Therefore, there is an effect that the paper sheet can be satisfactorily conveyed, and information on the paper sheet can be detected stably.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a paper sheet processing apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a light emitting unit with a part thereof cut away.

FIG. 3 is a perspective view showing a light receiving unit with a part thereof cut away.

FIG. 4 is a configuration diagram showing a paper dust removing device for removing paper dust.

FIG. 5 is a diagram showing intervals of paper sheets.

FIG. 6 is a flowchart illustrating a paper dust removing operation.

[Explanation of symbols]

 P: paper sheet 1: paper bundle reader 5: light receiving unit (light receiving element) 9: light emitting unit (light emitting element) 30: removing device (removing means) 31: first air nozzle 32: second air nozzle 47 Controller (control means)

Claims (8)

[Claims] 1. A reading means for reading sheets conveyed intermittently, a removing means for blowing compressed air to the reading means to remove an object to be removed on the reading means, and an operation of the removing means. Control means for operating the removing means using the time from when the preceding sheet passes through the reading means to when the succeeding sheet is sent to the reading means, A paper sheet processing apparatus comprising: 2. A reading means comprising: a light emitting unit for irradiating light to a sheet conveyed intermittently; and a light receiving unit for receiving light from the sheet irradiated by the light emitting unit; Removing means for blowing the compressed light to the light emitting unit and the light receiving unit of the reading means to remove an object to be removed from the light emitting unit and the light receiving unit; and controlling the operation of the removing means. Control means for operating the removing means by using a time period after passing the reading means and before a subsequent paper sheet is sent to the reading means; and apparatus. 3. The paper according to claim 2, wherein said removing means has a first blowing means for blowing compressed air to said light emitting unit and a second blowing means for blowing compressed air to said light receiving unit. Leaf processing equipment. 4. A reading means for reading sheets conveyed intermittently, a blowing means facing the reading means, an air compressor connectable to the blowing means, and a connection between the air compressor and the blowing means. A switching unit for performing the operation, and removing the object to be removed on the reading unit by blowing compressed air from the blowing unit to the reading unit in a state where the blowing unit and the air compressor are connected by the switching unit. Removing means, for controlling the switching operation of the removing means in the switching means, after the preceding sheet has passed through the reading means,
A sheet processing apparatus, comprising: control means for connecting and controlling the spraying means and the air compressor during a time until a subsequent sheet is sent to the reading means. 5. A reading means comprising: a light emitting unit for irradiating light to a sheet conveyed intermittently; a light receiving unit for receiving light from the sheet irradiated by the light emitting unit; A blowing unit facing the light emitting unit and the light receiving unit of the reading unit; an air compressor connectable to the blowing unit; and a switching unit for connecting the air compressor and the blowing unit. Removing means for blowing compressed air from the spraying means to the reading means in a state where the means and the air compressor are connected to remove an object to be removed on the reading means; It controls the switching operation, and after the preceding sheet has passed the reading means,
A sheet processing apparatus, comprising: control means for connecting and controlling the spraying means and the air compressor during a time until a subsequent sheet is sent to the reading means. 6. The spraying means of the removing means includes a first blowing means for blowing compressed air to the light emitting unit and a second blowing means for blowing compressed air to the light receiving unit. Item 6. The paper sheet processing apparatus according to Item 5. 7. The air compressor of the removing means is operated until the processing in the sheet processing apparatus is completed, and in this operating state, the switching means switches between the blowing means. 6. The paper sheet processing apparatus according to 4 or 5. 8. A first step of conveying a sheet to the reading means while providing a predetermined time interval in a non-conveying state, and the first step causes the reading means to perform an operation with respect to the reading means during the predetermined time interval. A second step of blowing compressed air through the second step, and a third step of stopping the blowing of the compressed air to the reading means when the conveyance of the sheets is started at the time of blowing the compressed air in the second step. A method for removing paper dust, comprising: