JP2002229132A - Auxiliary unit device and image reader using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an auxiliary unit device and an image reader using the same which applies no load on a binding margin and reads a clear picture with respect to a bookbinding original. SOLUTION: This auxiliary unit device 14 which is freely attachable and detachable is fixed on an original placing plate 12. An original is placed on the original placing plate 12 in such a manner that the read surface faces downward and the image is read by an image sensor in an image scanning input part 16. This auxiliary unit device 14 is fixed on the original placing plate 12 in the state that the bottom surface (first surface) is in contact with the original placing plate 12 (or the image reading surface), has side surfaces (second and third surfaces) which are disposed in such a manner that the cross-section becomes an angle shape and the images on the side surfaces (the second and third surfaces) are projected in parallel on the bottom surface (the first surface). The image which is projected on the bottom surface of the auxiliary unit device 14 is scanned by the image sensor in the image scanning input part 16, thereby reads the image of the bookbinding original.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an auxiliary unit and an image reading apparatus using the same.

[0002]

2. Description of the Related Art In an image reading apparatus such as a scanner or a copying machine, when a bound document is read as an image, a binding margin for binding cannot be completely opened. Therefore, in this document, there is a portion that cannot be placed in a state of being in contact with a document table on which an image is read.

In this part, as shown in FIG. 9, the illumination of the light source illuminating the original through the original table does not reach, and as a result, the read image becomes dark, for example, or the image near the binding margin is distorted. It is read in a state.

In order to avoid such a situation,
If the binding margin is forcibly opened, the binding margin deteriorates due to the load, and the binding state deteriorates. Therefore, the binding margin cannot be forcibly opened for a particularly important bookbinding document, and it has been difficult to read a clear image.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to read a clear image of a bound document without imposing a load on a binding margin. It is an object of the present invention to provide an auxiliary unit device for performing the operation and an image reading apparatus using the same.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an auxiliary unit device for reading an image by an image reading device, and a first surface on which an image is read by the image reading device. And the first surface,
The second surface and the third surface provided so that the cross section has a mountain shape.
And an image projected onto the first surface from at least the second surface or the third surface.

According to the present invention, in the auxiliary unit device having a mountain shape, bookbinding is achieved by arranging a bound document on the second and third surfaces inclined so that the opened page faces downward. It is possible to project an image to be taken in the written document on the first surface. Therefore,
By reading the image projected on the first surface by the image reading device, an image of the bound document can be obtained without applying a load to the binding margin.

Further, the present invention is characterized in that the captured image on the second surface or the third surface is made of a material which is projected in parallel to the first surface.

Here, "parallel projection on the first surface" means that an image at an arbitrary position on the second surface or the third surface is projected in parallel and the image is projected on the first surface. means.

According to the present invention, a bookbinding document bound at a binding margin can be projected as a planar image on the first surface, so that it is easy to correct a clear image to be read.

Further, the invention is characterized in that it is constituted by a glass fiber having a transmission direction in a direction perpendicular to the first surface.

Here, the glass fiber means a bundle of glass fibers whose transmission direction is the longitudinal direction.

According to the present invention, it is possible to easily provide an auxiliary unit device suitable for reading an image of a bound document as described above.

The present invention also provides at least a second surface and a third surface.
One of the surfaces is curved toward the first surface.

According to the present invention, since the angle at which the binding margin of the bound document is opened is an acute angle as compared with the case where the chevron shape is a triangle having the first surface as the base, the bound document is No extra load is applied to the binding margin.

According to another aspect of the present invention, there is provided an image reading device for inputting an image, wherein the first surface of the auxiliary unit device according to any one of claims 1 to 4 is scanned and projected on the first surface. Image scanning input means for reading an image, and speed control means for varying the speed of the image scanning input means in the main scanning direction or the sub-scanning direction when the auxiliary unit device is attached and when it is not attached; It is characterized by including.

According to the present invention, since an image is read by scanning the image projected on the first surface, it is possible to avoid the disadvantage that the image must be read in a short time and a short distance with respect to the length of the document to be read. In addition, it is possible to read a higher definition image.

Further, the present invention provides the image scanning input means for scanning the first surface in accordance with the shape of the second surface or the third surface when the auxiliary unit device is attached. The speed in the main scanning direction or the sub-scanning direction is changed.

According to the present invention, for example, when the arrangement of the second surface and the third surface of the auxiliary unit device is in the sub-scanning direction,
By reducing the scanning speed in the sub-scanning direction, it is possible to correctly read the image of the bound original. Also,
For example, when the arrangement of the second surface and the third surface of the auxiliary unit device is in the main scanning direction, by reducing the scanning speed in the main scanning direction, the image of the bound original can be correctly read.

According to the present invention, there is also provided an image reading apparatus for inputting an image, wherein the auxiliary unit apparatus according to any one of the above, scans the first surface and reads an image projected on the first surface. It is characterized by including input means, and correction means for performing a correction for enlarging an image read by the image scanning input means in a given direction.

According to the present invention, for example, when the arrangement of the second and third surfaces of the auxiliary unit is in the sub-scanning direction,
By performing the correction for enlarging the image read in the sub-scanning direction, the image of the bound original can be captured in a clear state. Also, for example, the second unit of the auxiliary unit device
When the arrangement of the surfaces and the third surface is in the main scanning direction, by performing a correction for enlarging the image read in the main scanning direction, the image of the bound original can be captured in a clear state.

According to another aspect of the present invention, there is provided an image reading apparatus for inputting an image, comprising: a means for capturing an image projected on the first surface of the auxiliary unit device according to any of the above; Correction means for performing a correction for enlarging in a given direction.

According to the present invention, when the entire image projected on the first surface such as a CCD is captured without reading the image by scanning the image, the image is read, for example, by the auxiliary unit device. By performing the correction for enlarging the image captured in the direction in which the second and third surfaces are arranged, a clear captured image of the image of the bound document can be obtained.

According to the present invention, there is provided an identification unit for identifying identification information added to the auxiliary unit device, and a determination unit for determining the presence or absence or type of the auxiliary unit device based on the identification result of the identification unit. It is characterized by including.

Here, the identification information includes, for example, the shape of a mounting portion provided unique to the auxiliary unit device, a bar code unique to the auxiliary unit device, and electronic information.

According to the present invention, the presence or absence of the auxiliary unit device or the type of the device when the auxiliary unit device is mounted can be specified. For example, information necessary for controlling the image capturing area, scanning distance, and scanning speed can be specified. And an easy-to-use image reading apparatus can be provided.

[0027]

Preferred embodiments of the present invention will be described below with reference to the drawings.

1. 1. First Embodiment 1.1 Image Reading Apparatus FIG. 1 schematically shows the main components of an image reading apparatus according to a first embodiment.

The image reading apparatus 10 according to the first embodiment
The detachable auxiliary unit device 14 is mounted on a document table 12 made of, for example, a transparent glass plate. A document is placed on the document table 12 such that the document surface to be read faces downward, and an image illuminated by a light source (not shown) from the back of the document table 12 is stored in a carriage (image scanning input unit in a broad sense) 16. The image is read by the image sensor.

The image sensor in the carriage 16 is, for example, a charge coupled device (hereinafter, referred to as a CCD).
Abbreviated. ). An image obtained by forming an image of a document placed on the document table 12 by a lens is input to the CCD, and only one line is read in the main scanning direction 18. Therefore, the carriage 16
Is moved in the sub-scanning direction 20 by a motor or the like, so that the entire image of the document placed on the document table 12 can be read.

The image read in this way is converted into an electric signal and stored as image information.

1.2 Auxiliary Unit Device The auxiliary unit device 14 has the bottom surface (first surface) on the original table 12 (or the image reading surface) on the original table 12 from which the image of the original is read. It has a side surface (second surface, third surface) that is attached in a contact state and is provided so that the cross section has a mountain shape, and a side surface (second surface, third surface).
The above image is projected parallel to the bottom surface (first surface). Therefore, if the page to be read of the bookbinding document 22 bound at the binding margin is arranged downward so as to be in contact with the side surface,
The image of the page is projected on the bottom surface. Therefore, by reading the image on the bottom surface, the image of the bookbinding document 22 can be read by the image sensor in the carriage 16.

FIGS. 2A and 2B show an example of the structure of the auxiliary unit device 14. FIG.

FIG. 2A is a perspective view showing an example of the structure of the auxiliary unit device 14. FIG. 2B is a cross-sectional view illustrating an example of the structure of the auxiliary unit device 14.

The auxiliary unit device 14 includes, for example, a bottom surface (first surface) 30A disposed in contact with the document table (image reading surface in a broad sense) 12 as described above,
FIG. 2 has side surfaces (second and third surfaces) 32A and 34A on which facing pages to be read of the bookbinding document 22 in the state where the binding margin is open are arranged downward.
As shown in (A) and (B), the cross section has a triangular prism structure having an isosceles triangle shape with respect to the bottom surface. That is, as shown in FIG. 2B, the lengths a and b in the cross-sectional shape are equivalent.

The auxiliary unit device 14 has side surfaces 32A, 3A
As shown in FIG. 2B, the light transmission direction at 4A is projected parallel to the bottom surface 30A. For this reason, the auxiliary unit device 14 is constituted by, for example, a bundle of glass fibers so as to be in the transmission direction 42 shown in FIG. 2B, and the images on the side surfaces (second surface, third surface) 32A and 34A. Can be projected parallel to the bottom surface (first surface) 30A.

However, as before, the carriage 16 (image scanning input unit) including the image sensor is moved in the sub-scanning direction 2.
If the scanning is performed at a constant speed of 0, image information of the original document of the original length (a + b) cannot be captured at the scanning distance of the length c. Therefore, it is necessary to increase the scanning speed in the main scanning direction or reduce the scanning speed in the sub-scanning direction.
Increasing the scanning speed in the main scanning direction is likely to make it impossible to cope with high definition in the future.

Therefore, in the image reading apparatus according to the first embodiment, when the auxiliary unit device 14 is attached, the scanning speed of the carriage 16 in the sub-scanning direction 20 becomes the scanning speed v1 according to the equation (1). Perform speed control.

V1 = cv · (a + b) (1) Here, v indicates a conventional constant scanning speed in the sub-scanning direction when the auxiliary unit device 14 is not attached.

As described above, according to the expression (1), the carriage 1
6 by reducing the scanning speed, the original length (a +
An image can be captured without changing the scanning speed in the main scanning direction at the scanning distance of the length c from the image information of b).

Here, the scanning speed in the sub-scanning direction is changed. However, if there is no problem in increasing the scanning speed in the main scanning direction, the scanning speed in the sub-scanning direction is reduced according to the equation (1). In addition, the scanning speed in the main scanning direction is changed to the conventional "(a
+ B) / c ”times.
In this case, the image can be captured without changing the scanning speed in the sub-scanning direction.

The case where the lengths a and b shown in FIG. 2B are equivalent has been described. However, the present invention is not limited to this case. It can be performed.

Further, since it is not necessary to consider the boundary between the read images, the lengths a and b are preferably larger than the width of each bound page.

In order to avoid the deterioration of the binding margin of the bound document as much as possible, the side 3
The angle θ between 2A and 34A is desirably an acute angle.

FIGS. 3A and 3B show another example of the structure of the auxiliary unit device 14. FIG.

The structure of the auxiliary unit device 14 is shown in FIG.
As shown in (A) and (B), the case where the cross-sectional structure is triangular has been described. However, the present invention is not limited to this, and the cross-section of the auxiliary unit device 14 has a shape in which the side surface is curved toward the bottom surface. May be used. In this case, the angle at which the binding margin of the bound document 22 is opened is shown in FIG.
Since the angle is sharper than in the case shown in FIG.
It is not necessary to apply an extra load to the binding allowance portion.

FIG. 3A is a perspective view of another example of the structure of the auxiliary unit device 14. FIG. 3B is a cross-sectional view of another example of the structure of the auxiliary unit device 14.

The auxiliary unit device 14 includes, for example, a bottom surface (first surface) 30B arranged in contact with the document table (image reading surface in a broad sense) 12 as described above,
FIG. 3 has side surfaces (second and third surfaces) 32B and 34B on which facing pages to be read of the bookbinding document 22 in the state where the binding margin is open are arranged downward.
As shown in (A) and (B), the cross section has a shape in which the side surface is curved toward the bottom surface.

The auxiliary unit device 14 has side surfaces 32B, 3
As shown in FIG. 3B, the light transmission direction at 4B is projected parallel to the bottom surface 30B. For this reason, the auxiliary unit device 14 is formed of, for example, a bundle of glass fibers so as to be in the transmission direction 44 shown in FIG. 3B, and the images on the side surfaces (second surface, third surface) 32B and 34B. Can be projected parallel to the bottom surface (first surface) 30B.

Also in this case, FIGS. 2A and 2B
As in the case of the auxiliary unit device 14 having the structure shown in FIG. 7, the speed control is performed for the scanning in the sub-scanning direction 20 of the carriage 16 (image scanning input unit) including the image sensor. But,
When scanning is performed at a constant speed as shown in equation (1), for example, FIG.
As shown in (B), the scanning distance of the image corresponding to L1 is D1 and the scanning distance of the image corresponding to L2 is D2, although the image information in the portions of the lengths L1 and L2 that are originally equal is equal. (Here, D2> D1), and a fixed image cannot be captured.

Therefore, in the image reading apparatus, when the auxiliary unit device 14 is attached, the scanning speed of the carriage 16 in the sub-scanning direction 20 is equivalent to the scanning time at the scanning distances D1 and D2 according to the equation (2). Scan speed v
Speed control is performed so as to be 2.

V2 = v · f (x) (2) Here, x indicates a position on the curved side surface. The function f is a proportionality coefficient corresponding to the slope in the parameter x.

The above equation (1) is a concrete example of the function f (x, v) of the equation (2) based on the shape of the isosceles triangle of the cross section.

Also in this case, the scanning speed in the sub-scanning direction is changed. However, if there is no problem in increasing the scanning speed in the main scanning direction, the scanning speed in the sub-scanning direction is changed according to the equation (2). Alternatively, the scanning speed in the main scanning direction may be changed according to the curved surface shape of the side surface. In this case, the image can be captured without changing the scanning speed in the sub-scanning direction.

As described above, the image reading apparatus according to the first embodiment controls the scanning speed of the carriage 16 in accordance with the shape of the side surface, so that the image information corresponding to the length of the document to be read can be stored in the auxiliary unit. A clear image can be captured at a scanning distance equal to the length of the bottom surface of the apparatus.

The auxiliary unit device 14 is not limited to its cross-sectional shape. In short, the auxiliary unit device 14 is capable of displaying an image on the side surface (second surface, third surface) in parallel with the bottom surface. What is necessary is just to be able to project.

As described above, according to the auxiliary unit device 14 in the first embodiment, the image of the bookbinding document arranged toward the side surface of the auxiliary unit device 14 is projected parallel to the bottom surface of the auxiliary unit device, By reading this under the above-described scanning speed control, it is possible to read a clear image of a bound document without imposing a load on the binding margin.

1.3 Detailed Example 1.3.1 Functional Block FIG. 4 shows a schematic configuration of an example of a functional block of the image reading apparatus according to the first embodiment.

The image reading apparatus 10 according to the first embodiment
Is a processing unit 100, a storage unit 110, an image scanning input unit 1
6, the sensor 122, the auxiliary unit device 14, the operation input unit 124, and the output unit 126.

The processing section 100 performs various processes such as control of the entire apparatus and instructions to each functional section in the apparatus.
Its functions are provided by various processors (Central Processing Unit (Central P
rocessing Unit: hereinafter abbreviated as CPU. ), Digital Signal Processor (DSP)
Or an ASIC (gate array or the like) or a given program (control program).

The storage unit 110 stores image information 112 obtained by converting a captured image into electronic information.
It becomes a work area of the processing unit 100 and its function is RAM
(Random Access Memory).

The image scanning input section 16 reads an image of a document on a document table by scanning in the main scanning direction and the sub-scanning direction under the control of the processing section 100. As described above, the reading of one line in the main scanning direction by the CCD as described above and the movement of the line in the sub-scanning direction by driving a motor can realize reading of the entire image.

The sensor 122 detects the mounting state of the detachable auxiliary unit device 14 and outputs the detection result to the processing unit 1.
Notify 00. More specifically, for example, the shape of the mounting portion provided uniquely to the auxiliary unit device is identified, or a barcode or electronic information uniquely assigned to the auxiliary unit device is identified.

The operation input section 124 is used by an operator to input operation data.
It can be realized by hardware such as buttons and touch panels.

The output unit 126 outputs a read image, and its function can be realized by hardware such as a display device (CRT, LCD, etc.) and a printer.

The processing unit 100 includes an auxiliary unit discriminating unit 10
2, including a scanning speed control unit 104 and an image generation unit 106.

Here, the auxiliary unit discriminating unit 102 determines whether or not the auxiliary unit device 14 is mounted on a document table (not shown) of the image reading apparatus according to the first embodiment based on the detection result from the sensor 122. If so, the type of the auxiliary unit device is identified.

The scanning speed control unit 104 controls the scanning speed of the image scanning input unit 16 as described above, based on the determination result of the auxiliary unit determining unit 102.

The image generation unit 106 generates an image to be output to the output unit 126 based on the image information 112 read and stored in the storage unit 110.

The functions of the auxiliary unit discriminating unit 102, the scanning speed control unit 104, and the image generating unit 106 may all be realized by hardware, or all of them may be realized by a program. Alternatively, it may be realized by both hardware and a program.

1.3.2 Processing Example FIG. 5 shows a processing example of the image reading apparatus according to the first embodiment shown in FIG.

First, the processing section 100 includes the operation input section 124
Monitor the image reading instruction from the operator via the interface (step S10: N), and when this is detected (step S1)
0: Y), the sensor 12
The detection result from step 2 is determined (step S11).

The auxiliary unit discriminating unit 102 includes the sensor 12
If it is determined that the auxiliary unit device 14 is attached from the detection result from Step 2 (Step S11: Y),
The type of the auxiliary unit device is identified from the detection result (step S12). As a result, the ratio of the three sides of the auxiliary unit device described with reference to FIG. 2B or FIG.
The size and the like are identified, and as shown in the expression (1) or (2), the image is read by controlling the scanning by the image scanning input unit 16 at a speed corresponding to the shape of the side surface of the auxiliary unit device ( Step S13).

On the other hand, in step S11, when the auxiliary unit discriminating section 102 determines from the detection result from the sensor 122 that the auxiliary unit device 14 is not attached (step S11: N), the given constant scanning speed Then, scanning is performed by the image scanning input unit 16 to read an image (step S14).

The read image is stored in the storage unit 110 as image information 112 (step S15), and a series of processing ends (end).

Image information 112 stored in storage unit 110
Is based on an instruction from the operator via the operation input unit 124 or an instruction from the processing unit 100.
Thus, an image output by the output unit 126 is generated. When the output unit 126 is a display device, the generated image is displayed. When the output unit 126 is a printer, the image is printed and output on a sheet of an appropriately selected size.

2. Second Embodiment In the image reading apparatus according to the first embodiment, the image on the side of the auxiliary unit device is read by controlling the scanning speed of the image scanning input unit 16. However, the present invention is not limited to this. In the image reading apparatus according to the second embodiment, after an image is captured by scanning at a constant speed by the image scanning input unit, the image is corrected, so that the captured image can be appropriately output.

2.1 Detailed Example 2.1.1 Functional Block FIG. 6 shows a schematic configuration of an example of a functional block of the image reading apparatus according to the second embodiment.

However, the same parts as those of the image reading apparatus according to the first embodiment shown in FIG.

The image reading device 20 according to the second embodiment
0 is the processing unit 210, the storage unit 110, the image scanning input unit 1
6, the sensor 122, the auxiliary unit device 14, the operation input unit 124, and the output unit 126.

The processing section 210 performs various processes such as control of the entire apparatus and instructions to each functional section in the apparatus.
Its functions are various processors (CPU, DSP, etc.),
Alternatively, it can be realized by hardware such as an ASIC (gate array or the like) or a given program (control program).

The storage unit 110 stores image information 112 obtained by converting a captured image into electronic information.
It becomes a work area of the processing unit 210, and its function can be realized by hardware such as a RAM.

The image scanning input unit 16 reads an image of a document on a document table by scanning in the main scanning direction and the sub-scanning direction under the control of the processing unit 210. As described above, the reading of one line in the main scanning direction by the CCD as described above and the movement of the line in the sub-scanning direction by driving a motor can realize reading of the entire image.

The sensor 122 detects the mounting state of the detachable auxiliary unit device 14 and outputs the detection result to the processing unit 2.
Notify 10.

The operation input section 124 is used by an operator to input operation data.
It can be realized by hardware such as buttons and touch panels.

The output unit 126 outputs a read image, and its function can be realized by hardware such as a display device (CRT, LCD, etc.) and a printer.

The processing section 210 includes an auxiliary unit discriminating section 10
2, including an image correction unit 212 and an image generation unit 106.

The auxiliary unit discriminating unit 102 includes the sensor 12
Based on the detection results from 2, the image processing apparatus according to the second embodiment determines whether or not the auxiliary unit is attached to a document table (not shown) of the image reading apparatus, and if so, identifies the type of the auxiliary unit.

The image correcting section 212 is provided for the image scanning input section 16.
The image captured at a constant scanning speed in the sub-scanning direction is corrected according to the shape of the side surface as shown in FIGS. 2 (B) and 3 (B). More specifically, a correction for enlarging in the sub-scanning direction is performed according to the shape of the side surface of the auxiliary unit device.

That is, in the first embodiment, the scanning speed is controlled in accordance with the shape of the side surface of the auxiliary unit device so as to take in an image. After the image is captured at a constant scanning speed in the sub-scanning direction, the captured image is corrected according to the shape of the side surface of the auxiliary unit device.

The image generation unit 106 corrects the image information 11 stored in the storage unit 110 after being corrected by the image correction unit 212.
2, an image to be output to the output unit 126 is generated.

The functions of the auxiliary unit discriminating unit 102, the image correcting unit 212, and the image generating unit 106 may all be realized by hardware, or all may be realized by a program. Alternatively, it may be realized by both hardware and a program.

2.1.2 Processing Example FIG. 7 shows a processing example of the image reading apparatus according to the second embodiment shown in FIG.

First, the processing section 210 operates the operation input section 124.
Monitor the image reading instruction from the operator via the PC (step S20: N), and when this is detected (step S2)
0: Y), the sensor 12
2 is determined (step S21).

The auxiliary unit discriminating unit 102 is provided with the sensor 12
When it is determined that the auxiliary unit device 14 is attached from the detection result from Step 2 (Step S21: Y),
The type of the auxiliary unit device is identified from the detection result (step S22). As a result, the ratio of the three sides of the auxiliary unit device described with reference to FIG. 2B or FIG.
The size and the like are identified (Step S22), and the image is read by the image scanning input unit 16 at a given constant scanning speed (Step S23).

The read image is temporarily stored in the storage unit 110, and thereafter, the image correction unit 212 executes step S22.
The image is corrected in accordance with the shape of the side surface of the auxiliary unit device 14 identified by (step S24).

On the other hand, in step S21, when the auxiliary unit discriminating section 102 determines from the detection result from the sensor 122 that the auxiliary unit device 14 is not mounted (step S21: N), the same constant scanning as in step S23 is performed. At a speed, scanning by the image scanning input unit 16 is performed,
An image is read (step S25).

The image corrected in step S24 or the image read in step S25 is stored in the storage unit 110 as image information 112 (step S26), and a series of processing ends (end).

Image information 112 held in storage unit 110
Is based on an instruction from the operator via the operation input unit 124 or an instruction from the processing unit 210.
Thus, an image output by the output unit 126 is generated. When the output unit 126 is a display device, the generated image is displayed, and when the output unit 126 is a printer, the image is printed and output on a sheet of an appropriately selected size.

3. Third Embodiment In the first and second embodiments, the case where the side surfaces of the auxiliary unit device 14 are arranged in the sub-scanning direction 20 of the image scanning input unit 16 has been described, but the present invention is not limited to this. . In the image reading apparatus according to the third embodiment, the case where the side surfaces of the auxiliary unit device are arranged in the main scanning direction of the image scanning input unit is shown.

FIG. 8 schematically shows the main components of an image reading apparatus according to the third embodiment.

However, the same parts as those of the image reading apparatus according to the first embodiment shown in FIG.

That is, in the image reading apparatus 300 according to the third embodiment, the image scanning input unit (carriage) 16
The image sensor inside receives an image formed by forming an image of a document placed on the document table 12 by a lens, and outputs the image in the main scanning direction 3.
In 02, only one line is read. Therefore,
By moving the image scanning input unit 16 in the sub-scanning direction 304 by a motor or the like, the entire image of the document placed on the document table 12 can be read.

In this case, since the alignment of the side surfaces of the auxiliary unit device 14 is parallel to the main scanning direction 302 of the image scanning input unit 16, the scanning speed of the image scanning input unit 16 in the sub scanning direction 304 is kept constant. In the second embodiment, the configuration is the same as the configuration shown in FIG. 6, and is enlarged in the main scanning direction 302 according to the shape of the side surface of the auxiliary unit device 14 by the same processing procedure as the processing shown in FIG. By making corrections, the load on the binding margin is not increased,
A clear image can be read from a bound document.

In the third embodiment, the captured image is corrected while the scanning speed of the image scanning input section 16 in the sub-scanning direction 304 is kept constant. However, the present invention is not limited to this. Absent. For example, the image scanning input unit 1
The scanning speed in the main scanning direction 302 of FIG. 6 may be changed in accordance with the shape of the side surface of the auxiliary unit device 14 to capture the scanned image.

The present invention is not limited to the embodiment described above, and various modifications can be made.

In the first to third embodiments, an image parallel-projected from the side surface to the bottom surface of the auxiliary unit device 14 is scanned to capture an image. However, the present invention is not limited to this. Absent. For example, the auxiliary unit device 1
The entire image parallel-projected from the side surface to the bottom surface of the auxiliary unit 4 may be captured as an image, and correction for enlarging the image may be performed in accordance with the direction in which the side surfaces of the auxiliary unit device 14 are arranged. More specifically, the image captured in the direction in which the side surfaces of the auxiliary unit device 14 are arranged is enlarged according to the shape of the side surface of the auxiliary unit device 14.

Further, in the first to third embodiments, the description has been made assuming that the image is projected in parallel from the side surface to the bottom surface of the auxiliary unit device. The invention is not particularly limited to those composed of parallel-projected materials.

Further, in the first to third embodiments, the image reading apparatus has been described. However, the present invention is not limited to this. For example, the present invention is similarly applied to various electronic devices such as copying machines that capture images. can do.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram schematically showing a main part of a configuration of an image reading apparatus according to a first embodiment.

FIG. 2A is a perspective view illustrating an example of a structure of an auxiliary unit device, and FIG. 2B is a cross-sectional view illustrating an example of a structure of the auxiliary unit device.

FIG. 3A is a perspective view illustrating an example of a structure of an auxiliary unit device, and FIG. 3B is a cross-sectional view illustrating an example of a structure of the auxiliary unit device.

FIG. 4 is a configuration diagram illustrating a schematic configuration of an example of a functional block of the image reading apparatus according to the first embodiment.

FIG. 5 is a flowchart illustrating a processing example of the image reading apparatus according to the first embodiment.

FIG. 6 is a configuration diagram illustrating a schematic configuration of an example of a functional block of an image reading device according to a second embodiment.

FIG. 7 is a flowchart illustrating a processing example of the image reading apparatus according to the second embodiment.

FIG. 8 is an explanatory diagram schematically showing a main part of a configuration of an image reading apparatus according to a third embodiment.

FIG. 9 is an explanatory diagram schematically showing a problem when a bookbinding original is read.

[Explanation of symbols]

 10, 200, 300 Image reading device 12 Document table 14 Auxiliary unit device 16 Image scanning input unit (carriage) 18, 302 Main scanning direction 20, 304 Sub scanning direction 22 Bookbinding original 30A, 30B Bottom surface 32A, 32B Side surface 42, 44 Transmission Direction 100, 210 Processing unit 102 Auxiliary unit determination unit 104 Scanning speed control unit 106 Image generation unit 110 Storage unit 112 Image information 122 Sensor 124 Operation input unit 126 Output unit 212 Image correction unit

Claims (9)

[Claims] 1. An auxiliary unit device for reading an image by an image reading device, the first surface on which an image is read by the image reading device, and a cross section of the first surface having a mountain shape. An auxiliary unit device, comprising: a second surface and a third surface provided as described above, wherein an image projected on the first surface is captured from at least the second surface or the third surface. 2. The method according to claim 1, wherein the captured image on the second surface or the third surface is converted to the first image.
An auxiliary unit device characterized by being made of a material that is projected in parallel to the surface of (1). 3. The auxiliary unit device according to claim 2, wherein the auxiliary unit device is formed of a glass fiber having a transmission direction in a direction perpendicular to the first surface. 4. The device according to claim 1, wherein at least one of the second surface and the third surface is the first surface.
An auxiliary unit device characterized by being curved to the surface side. 5. An image reading device for inputting an image, wherein the first surface of the auxiliary unit device according to claim 1 is scanned to read an image projected on the first surface. Image scanning input means; and speed control means for varying the speed of the image scanning input means in the main scanning direction or the sub-scanning direction depending on whether the auxiliary unit device is attached or not. An image reading apparatus comprising: 6. The image scanning device according to claim 5, wherein the speed control unit scans the first surface according to a shape of the second surface or the third surface when the auxiliary unit device is attached. An image reading apparatus wherein the speed of an input means in a main scanning direction or a sub-scanning direction is changed. 7. An image reading device for inputting an image, wherein the first surface of the auxiliary unit device according to claim 1 is scanned to read an image projected on the first surface. An image reading apparatus comprising: an image scanning input unit; and a correction unit that performs a correction for enlarging an image read by the image scanning input unit in a given direction. 8. An image reading apparatus for inputting an image, comprising: means for capturing an image projected on a first surface of the auxiliary unit device according to claim 1; And a correction unit for performing a correction for enlarging in a given direction. 9. An identification unit for identifying identification information added to the auxiliary unit device, and presence or absence or type of the auxiliary unit device based on an identification result of the identification unit. An image reading apparatus, comprising: a determination unit configured to determine the following.