JP2002117395A - Image reading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image reading device capable of easily executing maintenance such as jam processing or cleaning. SOLUTION: A first unit 800 is installed rotatably relative to the device body 700 by a pivot 801, and a second unit 900 is also installed rotatably relative to the device body 700 by a pivot 901. A front face photographing part 560 is provided on the first unit 800, and a back face photographing part 550 is provided on the device body 700. A front face reading unit 410 is provided on the second unit 900, and a back face reading unit 420 is provided on the device body 700.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographing means for photographing an image on a document on a photosensitive material such as a microfilm while conveying a sheet-like document, and a reading means for reading the image on the document. The present invention relates to an image reading apparatus provided with the image reading apparatus.

[0002]

2. Description of the Related Art Conventionally, as this type of image reading apparatus,
For example, while a sheet-shaped document represented by paper is separated and conveyed one by one, an image on the document is read by being electrically converted by photoelectric conversion means such as a contact sensor (image sensor), and read. Means are provided for transmitting the read image data or recording the image data on a recording medium, and optically reducing and projecting the image onto a microfilm for photographing and recording.

Such an image reading apparatus has a document stacking section for stacking documents, and a document loaded on the document stacking section is separated and transported by a pair of forward / reverse rotation rollers provided in a paper feeding section. , Where the sheet is separated and conveyed so that only the uppermost sheet advances to the image reading section.

Thereafter, the sheet is sequentially passed through an image reading section and a photographing section arranged in the apparatus by a conveying means such as a conveying roller or a conveying belt, and is discharged from a sheet discharge port. The photographing unit includes a projection glass also serving as a document conveyance guide, a light source for illuminating the document, and a mirror for guiding image light to a photographing lens, on each of the front and back sides of the document to be conveyed.

[0005]

However, in the case of the above-described prior art, the following problems have occurred.

In the above prior art, in order to photograph images on both sides of a document on a microfilm, an optical path is arranged and optical adjustment is performed. , Projection glass, illumination light source,
The reflection mirror is fixedly arranged on the image reading apparatus main body.

[0007] These components constitute a part of the transport path or are arranged in the vicinity of the transport path, so that they are a major obstacle when trying to open the transport path.

In such a case, it is difficult to easily open all the portions of the transport path, and as shown in FIG.
When a jam occurs in the transport path, depending on the location, the outer cover 1101 is opened (1101 ′) and then the transport path 1106 is opened (1106 ′) to perform a treatment. There have been cases where the jam processing is performed after the discharge tray 1110 is removed (1102 ', 1110').

Further, in the case of a photographing section fixedly provided in the vicinity of the transport path, there is a problem that there is a place where a hand cannot enter or a place where it is difficult to enter. Also, the photographing glass 110
In No. 5, maintenance such as cleaning could not be performed unless the sheet was pulled out of the apparatus by a method completely different from the processing at the time of jam clearance. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the related art, and an object of the present invention is to provide an image reading apparatus capable of easily performing maintenance such as jam clearance and cleaning.

[0010]

In order to achieve the above object, according to the present invention, there is provided an apparatus main body, a first unit rotatably supported by the apparatus main body, and a first unit rotatably mounted on the apparatus main body. An image reading apparatus comprising: a second unit movably supported by a shaft; wherein the first unit is configured to form a part of an outer wall surface of the first unit and a part of an outer wall surface of the apparatus main body. A first sheet conveying path formed between the first unit and the second unit; and a second unit configured to be rotatable from a position at which the first sheet conveying path is opened to a position at which the first sheet conveying path is opened. The first unit is rotatably provided from a position where a second sheet conveying path is formed with a part of an outer wall surface of the main body to a position where the second sheet conveying path is opened.
A first photographing means for photographing an image on one surface of a sheet conveyed in the first sheet conveying path on a photosensitive material is provided, and the apparatus main body is provided on the other surface of the sheet conveyed in the first sheet conveying path. A second photographing means for photographing the image on a photosensitive material,
The second unit is provided with first reading means for reading an image on one surface of the sheet conveyed on the second sheet conveying path, and the apparatus main body is provided with the other of the sheet conveyed on the second sheet conveying path. A second reading means for reading an image on the surface is provided.

Therefore, by rotating the first unit to open the first sheet conveying path, the portions of the first photographing means and the second photographing means exposed to the first sheet conveying path can be opened, In addition, by rotating the second unit to open the second sheet conveying path, the portions of the first reading unit and the second reading unit that are exposed to the second sheet conveying path can be opened.

A sheet stacking section for stacking sheets, a feeding means for feeding the sheets stacked on the sheet stacking section, and a sheet fed by the feeding means being separated into one sheet and conveyed. And a separating and conveying means.

It is preferable that the separation / conveying means is constituted by a pair of separation / conveyance rollers, one separation / conveyance roller is provided on the apparatus main body side, and the other separation / conveyance roller is provided on the first unit or the second unit.

A pair of conveying rollers for conveying a sheet along the first sheet conveying path and the second sheet conveying path are provided, and one of the pair of conveying rollers is entirely moved to the apparatus main body side. It is preferable to provide the other unit in the first unit or the second unit.

The transport roller provided on the first unit or the second unit side may be a transport roller provided on the apparatus main body side as a drive roller for transmitting a drive from a drive source.
It is preferable that the driven roller is driven by the driven roller.

[0016]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the dimensions of the components described in this embodiment,
The materials, shapes, relative arrangements, and the like are not intended to limit the scope of the present invention only to them unless otherwise specified.

An image reading apparatus according to an embodiment of the present invention will be described with reference to FIGS.

First, the configuration of the entire apparatus will be described with reference to FIG. FIG. 1 is a schematic sectional view of the entire image reading apparatus according to the embodiment of the present invention.

The image reading apparatus according to the present embodiment generally includes an apparatus main body 700, a first unit 800 rotatably supported by the apparatus main body 700, and an apparatus main body 700.
And a second unit 900 which is rotatably supported on the second unit 900.

In FIG. 1, reference numeral 100 denotes a document bundle T of sheet-like documents.
The document stacking section 100 is mainly provided to be swingable, and a loading table 101 for stacking the document bundle T, a swing fulcrum 102 of the loading table 101, An arm 103 having one end for moving the loading table 101 rotatably supported and the other end in contact with the loading table 101.
And

A gear 104 is provided on the fulcrum end side of the arm 103.
The gear 104 is provided integrally with the motor 1.
The gear 105 is meshed with the gear 106 integrally fixed to the arm 105, and the drive of the motor 105 is transmitted to the arm 103 to move the loading table 101.

In the figure, reference numeral 200 denotes a paper feed unit.
The paper feeding unit 200 mainly includes a pickup unit 210 that sends out the uppermost original, a detecting unit 230 for detecting a stacked original, a separation / conveying unit 250 including a paper feeding unit 220 and a separation unit 260, and , Consisting of

The pickup section 210 is provided with a pickup roller 211 for feeding a document from a document take-in port to a separation section.
The belt 11 transmits the drive from the motor 213 to the belt 11.

The detecting means 230 is composed of a lever 231 for detecting the height of the original and a sensor 232. The detecting means 230 contacts the uppermost original among the originals loaded on the original loading table 101, and determines the position of the original. Is detected, and based on the detection result, the operation of the document loading table 101 is controlled so that the position of the uppermost document is fixed.

The separation / conveyance section 250 includes a paper feed unit 220
And a separation unit 260, whereby the uppermost document is separated and conveyed by one or a plurality of documents fed by the pickup roller.

The paper feed unit 220 mainly includes a feed roller 221 rotating in the transport direction, a motor 222 for driving the feed roller 221, a belt 223 connecting these, and a frame 224 holding the feed roller 221. You.

The frame 224 includes a feed roller 221.
Is oscillated about the shaft 225 by a cam 228 which is urged upward by a spring 226 and is integral with the motor 227. It is configured to be.

The cam 228 can adjust the center distance between the feed roller 221 and the separation roller 261 depending on the thickness of the document to be conveyed. The separation roller 261 of the separation unit 260 is connected to a motor 263 by a belt 262, and is configured to rotate in a direction opposite to that of the feed roller 221.

In the figure, reference numeral 300 denotes a registration unit. The registration unit 300 mainly includes a registration upper roller 301 and a registration lower roller 302, which are connected by a gear (not shown). .

The pair of registration rollers is connected to a drive from a main motor by a clutch (not shown).
The uncoupling is controlled, and the conveyance of the document separated and conveyed by the separation conveyance unit 250 to the reading unit is controlled.

S3 is a sensor for detecting the arrival of the document at the registration unit 300.

In the figure, reference numeral 400 denotes a reading unit. The reading unit 400 is mainly composed of a front side reading unit 410 and a back side reading unit 420. And are arranged at positions facing each other.

Inside the surface reading unit 410,
LED array 411 as a light source for illumination, lens array 412 for imaging, and contact sensor 4 for image reading
13 is contained in a casing 414.

Similarly, inside the back surface reading unit 420, an LED array 421 as a light source for illumination, a lens array 422 for image formation, and a contact sensor 423 for image reading are housed in a casing 424. .

The reading guide rollers 401 and 402 are driven by a drive transmission means such as a belt (not shown) from the main motor, and the driven rollers are driven in pairs with the reading guide rollers 401 and 402. 403 and 404 are also provided.

S4 is a sensor for detecting the arrival of the document at the reading unit.

In the figure, reference numeral 500 denotes a transport unit.
The transport section 500 mainly includes transport rollers 501 and 50 to which driving from a main motor (not shown) is connected.
2, 503, 504 and these transport rollers 501, 5
02, 503, 504, and driven rollers 50 driven by these rollers in pairs.
5, 506, 507, and 508.

In the figure, reference numeral 540 denotes a photographing unit.
The photographing unit 540 mainly includes a back surface photographing unit 550,
And a front surface photographing unit 560, and the units are arranged at positions facing the conveyed document.

The back side photographing section 550 includes a photographing glass section 551 integrally formed with a conveyance guide, a document illumination light source 552,
It consists of a reflection mirror A553. Similarly, the surface photographing unit 56
Reference numeral 0 denotes a photographing glass portion 56 integrally formed with a conveyance guide.
1, a document illumination light source 562 and a reflection mirror B563.

Image light from an original is guided to a microfilm, which is a photosensitive material, through an optical path described with reference to FIG.

511, 512, 513, 514, 51
Reference numerals 5 and 516 denote conveyance guides for guiding the document that has passed through the reading unit 400, and reference numerals 517 and 518 denote conveyance guides that guide the document that has passed the imaging unit 540.

Here, the transport guides 511, 513, 51
5, 517 are constituted by a part of the outer wall surface of the apparatus main body 700, and the transport guides 516, 518 are the first unit 80.
0 of the transport guide 51
Reference numeral 2 514 denotes a part of the outer wall surface of the second unit 900.

In a normal use state of the apparatus, by closing the first unit 800 and the second unit 900 as shown in FIG. 1, the transport guides 515 and 517 and the transport guides opposed thereto are provided. 51
6, 518, a downstream first sheet transport path is formed, and transport guides 511, 513 and transport guides 512, 514 opposed thereto form an upstream second sheet transport path.

By rotating the first unit 800, the first sheet conveying path can be opened, and by rotating the second unit 900, the second sheet conveying path can be opened. However, details on this point will be described later.

In the drawing, reference numeral 600 denotes a paper discharge roller section, which mainly includes a paper discharge drive roller 601 and a paper discharge driven roller 602 which forms a pair with the paper discharge drive roller 601 and which passes through the transport section. The discharged original is discharged onto the paper discharge unit 610 from the paper discharge port 603.

In addition, there are provided a paper discharge tray 612 for stacking the discharged originals, and a guide wall 611 for guiding the trailing end of the discharged originals. A rib (not shown) is formed so as not to interfere. Also, when the document passes through the paper discharge section,
A plurality of elastic members (not shown) are provided to make the document wavy in a direction perpendicular to the document transport direction to prevent the transport direction from being rounded or the like and to secure the alignment of the paper discharge.

Here, as described above, reference numeral 700 denotes the apparatus main body, and the apparatus stacking section 100 and the separation unit 2 of the various parts and members described so far.
60, registration unit 300, reading rollers 401 and 40
2, back side reading unit 420, transport roller 501,
502, 503, 504, conveyance guides 511, 513,
515, 517, back surface photographing section 550 and paper discharge roller section 6
00 are disposed.

In the first unit 800 which is an optical opening / closing unit, transport driven rollers 507 and 508, transport guides 516 and 518, a surface photographing section 560, a paper discharge driven roller 602, and a paper discharge section 610 are arranged. The first
The unit 800 is connected to the device body 7 by the pivot 801.
It is configured to be able to open and close (rotatably) with respect to 00.

In the second unit 900, a pickup unit 210, a paper feed unit 220, read driven rollers 403 and 404, a front reading unit 410, transport driven rollers 505 and 506, transport guides 512 and 514, and the like are arranged. . The second unit 900 is configured to be openable and closable (rotatable) with respect to the apparatus main body 700 by a pivot 901.

Next, the optical path from the photographing unit to the microfilm in the image reading apparatus according to the present embodiment will be described with reference to FIG.

In the drawing, T1 and T2 are the above-described separation and transport units 2
Reference numeral 50 denotes a document separated and conveyed, showing a state in which the document is passing through the photographing unit 540 and the reading unit 400, respectively. As shown in the block diagram of FIG. 3, the document conveying speed is instructed from an external device (PC) connected to the device.

The original T1 has an illumination light source 55 on the back and the front, respectively.
2, 562 illuminate through the imaging projection glass parts 551, 561.

Reference numeral 710 denotes a slit unit. A control unit (not shown) controls the opening amount of the slit by the slit 711 and the variable plates 712 and 713 so that an optimum exposure amount can be obtained according to the document conveying speed. 714, 715, 71
Reference numerals 6 denote reflection mirrors, respectively, which guide image light from the reflection mirrors 553 and 563 to the camera unit 750.

A lens 751 is provided in the camera unit 750, and the image light is reduced and projected on a microfilm at a preset magnification.

Reference numeral 753 denotes a microfilm wound on a reel before photographing. The microfilm is guided by a capstan roller 752 by a guide roller 755, and is calculated by the capstan roller 752 from the reduction ratio and the document conveyance speed. And is scanned and exposed. After the exposure, the take-up reel 75 is guided by the guide roller 756.
4 to be wound up.

Next, the operation of the image reading apparatus according to this embodiment will be described with reference to FIG.

When an instruction to start transporting a document is given to the image reading apparatus, the document loading table 101 moves the document to the sheet feeding position. Then, the feed roller 221 and the separation roller 2
61, and other transport rollers by a main motor (not shown) start operating.

Thereafter, the original bundle T with which the pickup roller 211 is in contact
When the uppermost document or the document located immediately below it is taken along by friction between the documents, a plurality of documents are sent to the separation unit.

In the initial state, the separation between the feed roller 221 which rotates in the normal direction and the separation roller 261 which rotates in the reverse direction is set so that the passage of any original is not allowed.

The relative distance between the feed roller 221 and the separation roller 261 is moved by the first sensor S1 which detects that the leading end of the document is approaching immediately before the contact portion between the feed roller 221 and the separation roller 261. It is started by the detection signal.

When the first sensor S1 detects the leading end of the document, the control unit drives the stepping motor 227 to relatively widen the feed roller 221 and the separation roller 261 in the direction of arrow B in FIG.

Feed roller 221 and separation roller 261
Gradually increases the inter-axis distance, and when the inter-axis distance becomes a distance such that only the uppermost sheet of the document bundle T can pass as shown in the figure, the one sheet is separated by the separation unit. Pass through.

S2 is a second sensor for detecting that the leading end of the document has passed through the separation unit, and is disposed immediately after the separation unit.
The control unit stops the movement of the stepping motor 227 according to the document leading edge detection signal from the second sensor S2.

When the second sensor S2 detects that the rear end of the document has passed through the separation section, the second sensor S2 returns the center distance between the feed roller 221 and the separation roller 261 to the initial state.
The stepping motor 227 is driven by the control unit.

In this method, since the separation unit always increases the distance between the axes from the initial state, even if originals having different thicknesses are mixed and loaded, they are conveyed one by one into the apparatus.

The document thus separated is temporarily stopped at the registration unit 300. The temporarily stopped document is restarted at a specified interval or according to the image processing status of the preceding document by the registration unit 300 as appropriate. The document is conveyed at a constant speed after the sensor S4 and passes through the reading unit 400. It is transported by the transport unit 500 and reaches the image capturing unit 540.

Here, the originals are original illumination light sources 552 and 562.
The image light is illuminated by the reflecting mirrors A, B, C, D,
It is guided to the camera unit by E. The image light is reduced and projected on the microfilm by the lens 751 and is scanned and exposed on the microfilm F. Thereafter, the document is discharged onto a paper discharge tray 612 via a paper discharge unit.

Next, the opening of the transport path of the image reading apparatus according to this embodiment will be described with reference to FIGS.

FIG. 4 shows a state where the first unit 800 is opened.

The first unit 800 is provided movably (rotatably) to a position 800 ′ with respect to the apparatus main body 700 by a pivot 801. The first unit 800 is located at the position (800) shown in FIG.
Is moved (rotated) by fixing means (known locking means, locking mechanism, etc.) not shown in the position (800 ') shown in FIG.
Can be stopped.

In the image reading apparatus according to the present embodiment, front side photographing section 560 is provided in first unit 800 and back side photographing section 550 is provided in apparatus main body 700. Is released,
The first transport path formed by the first unit 800 and each transport guide on the apparatus main body 700 side is opened including the photographing unit 540, and a paper jam generated here can be processed.

Further, since the first transport path is opened including the photographing section 540, the front and rear projection glass sections can be cleaned without removing them from the main body.

FIG. 5 shows the second unit in addition to the first unit 800.
The unit 900 also shows an open state.

The second unit 900 is also attached to the apparatus main body 700 so as to be movable (rotatably) to a position 900 'in the figure by a pivot 901. This second
When the unit 900 is at the position (900) shown in FIG. 1 and at the position (900 ′) shown in FIG. 5, the unit 900 is moved (rotated) by fixing means (known locking means, locking mechanism, etc.) not shown. ) Can be stopped.

In the image reading apparatus according to the present embodiment, front surface reading unit 410 is second unit 900.
Since the back surface reading unit 420 is provided in the apparatus main body 700, the second unit 9
When the sheet No. 00 is opened, the second conveyance path formed by the second unit 900 and the respective conveyance guides of the apparatus main body 700 is opened including the reading unit 400, and the processing of the paper jam generated here is performed. It becomes possible.

Further, since the second transport path is opened including the reading section 400, the reading section 400 can be easily cleaned.

As described above, in the present embodiment, maintenance such as jam clearance and cleaning in the machine is performed by the first unit 8.
00, or the first unit 800 and the second
Opening the unit 900 can be easily performed with only one kind of operation.

[0078]

As described above, according to the present invention, maintenance such as jam clearance and cleaning can be easily performed only by the operation of opening the unit.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of an entire image reading apparatus according to an embodiment of the present invention.

FIG. 2 is a layout diagram of an optical system of the image reading apparatus according to the embodiment of the present invention.

FIG. 3 is a block diagram illustrating a transport operation of the image reading apparatus according to the embodiment of the present invention.

FIG. 4 illustrates a first example of the image reading apparatus according to the embodiment of the present invention.
It is a schematic block diagram showing the state where the unit was opened.

FIG. 5 shows a first example of the image reading apparatus according to the embodiment of the present invention.
It is a schematic structure figure showing the state where a unit and the 2nd unit were opened.

FIG. 6 is an explanatory diagram illustrating a jam processing operation of the image reading apparatus according to the related art.

[Explanation of symbols]

REFERENCE SIGNS LIST 100 Document loading unit 101 Loading table 102 Swing fulcrum 103 Arm 104 Gear 105 Motor 106 Gear 200 Paper feed unit 210 Pickup unit 211 Pickup roller 212 Belt 213 Motor 220 Paper feed unit 221 Feed roller 222 Motor 223 Belt 224 Frame 225 Shaft 226 Spring 227 Motor 228 Cam 230 Detecting means 231 Lever 232 Sensor 250 Separation / conveyance unit 260 Separation unit 261 Separation roller 262 Belt 263 Motor 300 Registration unit 301 Upper registration roller 302 Lower registration roller 400 Reading unit 401, 402 Roller 403, 404 Following roller 410 Surface Reading unit 411 LED array 412 Lens array 413 Adhesion sensor 414 Casing 20 back face read unit 421 LED array 422 lens array 423 contact sensor 424 casing 500 transport unit 501, 502, 503 and 504 transport rollers 505, 506, 507 and 508 driven roller 511,512,513,514,515,516,5
17 Transport Guide 540 Imaging Unit 550 Back Surface Imaging Unit 551 Imaging Glass Unit 552 Illumination Light Source 560 Front Surface Imaging Unit 561 Imaging Glass Unit 562 Illumination Light Source 600 Discharge Roller Unit 601 Discharge Drive Roller 602 Discharge Follower Roller 603 Discharge Exit 610 Discharge Unit 611 guide wall 612 paper discharge tray 700 apparatus main body 711 slit 712, 713 variable plate 750 camera unit 751 lens 752 capstan roller 754 reel 755 guide roller 756 guide roller 800 first unit 801 pivot 900 second unit 901 pivot

Continued on front page F term (reference) 2H106 BC22 BC25 3F049 AA04 DA12 DB02 DB06 LA11 LB02 5B047 AA01 BA01 BA07 BB02 BC18 BC20 CA09 5C062 AA06 AB31 AB32 AC09 AC11 AD02 AD06 5C072 AA01 BA02 EA07 NA01 WA02

Claims (5)

[Claims] An image reading apparatus comprising: an apparatus main body; a first unit rotatably supported by the apparatus main body; and a second unit also rotatably supported by the apparatus main body. Wherein the first unit transports the first sheet from a position where a first sheet transport path is formed between a part of an outer wall surface of the first unit and a part of an outer wall surface of the apparatus main body. The second unit forms a second sheet conveying path between a part of an outer wall surface of the second unit and a part of an outer wall surface of the apparatus main body. From the position to be opened to the position to open the second sheet conveying path, and the first unit is configured to apply an image on one surface of a sheet conveyed through the first sheet conveying path to a photosensitive material. A first photographing means for photographing; A second photographing means for photographing an image on the other surface of the sheet conveyed on the conveyance path on a photosensitive material is provided, and the second unit is configured to transfer an image on one surface of the sheet conveyed on the second sheet conveyance path to the second unit An image reading apparatus, comprising: first reading means for reading; and second reading means for reading an image on the other surface of the sheet conveyed in the second sheet conveying path, in the apparatus main body. 2. A sheet stacking section for stacking sheets, feeding means for feeding the sheets stacked on the sheet stacking section, and a sheet fed by the feeding means being separated into one sheet. The image reading apparatus according to claim 1, further comprising: a separation conveyance unit configured to convey the image. 3. The apparatus according to claim 2, wherein the separation / conveying means comprises a pair of separation / conveyance rollers, one separation / conveyance roller being provided on the apparatus body side, and the other separation / conveyance roller being provided on the first unit or the second unit. The image reading device according to claim 2, wherein: 4. A device according to claim 1, further comprising a plurality of pairs of transport rollers for transporting the sheet along the first sheet transport path and the second sheet transport path, wherein one of the pair of transport rollers is entirely connected to the apparatus main body. The image reading apparatus according to claim 1, wherein the first unit or the second unit is provided on the first unit or the second unit. 5. The apparatus according to claim 1, wherein the transport roller provided on the apparatus main body side is a drive roller for transmitting drive from a drive source, and the transport roller provided on the first unit or the second unit side is driven by the drive roller. The image reading device according to claim 4, wherein the image reading device is a roller.