JPH09233278A - Image reader with coordinate output function added thereto - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the user to accurately grasp a current position, a moving distance and a moving direction in the case of receiving an image with a desired size in excess of a read range while the image reader moving its reading positions by adding a coordinate output function to the image reader. SOLUTION: Four rollers are fitted to a lower side of a scanner main body. Each roller is formed by a cylindrical rubber 14 fitted to a rotary shaft 13 and a turning section 12 is provided above each roller. The turning section 12 is fitted to a lower side of the scanner main body and a rotation sensing means 15 such as a rotary encoder is used to deliver a turning angle and a turning speed of the rubber 14 to an interface box. A direction sensing means 16 is used to sense a progressing direction of the roller based on a turning angle of the turning section 12. When the user holds the scanner main body placed on a plane such as a desk top with its hand and moves the scanner on the plane, the turning sensing means 15 and the direction sensing means 16 sense the moving direction, the moving amount and the moving speed of the scanner main body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading device having a coordinate output function.

[0002]

2. Description of the Related Art A handy scanner has a limited range in which a document can be read at a time (hereinafter, read range). A document having a size larger than the reading range cannot be read at one time. It is necessary for a user to move a scanner on a document to capture a plurality of images and to combine them on a computer.

[0003]

However, when the scanner is manually moved to move the reading position of the document, it is difficult for the user to accurately grasp the moving distance and the moving direction of the scanner. For this reason, when the captured images are stitched together, the overlapped part becomes large and some parts are not read. The problem was that it was difficult.

Therefore, according to the present invention, the user can accurately grasp the current position, the moving distance, and the moving direction when capturing an image of a desired size exceeding the reading range while moving the reading position of the scanner. The purpose is to

[0005]

In order to achieve this object, an image reading apparatus having a coordinate output function of the present invention is
The image reading means (5), one or more direction detecting means (16) for detecting the movement amount of the image reading means, and one or more rotation detecting means (15) for detecting the rotation amount of the image reading means. The output of the image reading means is added with the output of the direction detecting means (16) and the output of the rotation detecting means (15) and output.

[0006]

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

FIG. 1 is a perspective view showing a first embodiment of an image reading apparatus having a coordinate output function according to the present invention.

In FIG. 1, the scanner body 1 and the interface box 2 constitute a handy scanner. The scanner body 1 has a weight, size, and shape that can be held and moved by a user. The interface box 2 is used by connecting to a personal computer (hereinafter, personal computer) 3a. However, the computer to be connected to the interface box 2 is not limited to the personal computer, and may be any computer capable of playing the signal from the interface box 2 as described later. The scanner body 1 is connected to the interface box 2. Interface box 2
Receives a command from the personal computer 3a, and the scanner body 1
Calculate what kind of instruction to give to. The scanner body 1
An image reading operation is started by a command from the interface box 2, and the read image data is sent to the interface box 2. Scanning software (FIG. 2) is used to operate the handy scanner using the personal computer 3a.

The scanning software (FIG. 2) is software for controlling the handy scanner to read an image. By selecting and executing the necessary items of the scanning software, the interface box 2
You can send an order to. However, the handy scanner is not limited to the above configuration. For example, the scanner body 1
And the interface box 2 are integrated (FIG. 3), or the function of the interface box 2 is provided in the software of the personal computer 3a or in the scanner body 1 and the interface box 2 is omitted or simplified (FIG. 4). ) Etc. are considered. In the case of the configuration of FIG. 4, the software has a function of calculating and processing signals from both the scanner body 1 and the personal computer 3a and transmitting them.

FIG. 5 shows a schematic diagram of a document reading system of the scanner body 1. This handy scanner can read the document 4 placed on the lower surface of the scanner body 1 within a range (reading range) predetermined by the structure of the body. The scanner body 1 has a CCD 5. The CCD 5 is a monochrome surface sensor. The user sets the scanner body 1 to the original 4
Rest on top and read. The scanner body 1
It has three Xe tubes, and the Xe tubes 6R, 6G, and 6B respectively have filters 7R and 7 in the order of red, green, and blue from the top.
G and 7B are attached. By sequentially emitting light from the Xe tubes 6R, 6G, and 6B, it is possible to irradiate the original 4 with light of three colors.

The user adjusts the reading range of the lower surface of the scanner body 1 to the portion of the original 4 on the desk to be read. The scanning software is started on the personal computer 3a (FIG. 2), and the scan start button 17 is selected. A scan start command is sent from the personal computer 3a to the interface box 2, and the interface box 2 sends a scan start command to the scanner body 1. The scanner body 1 that has received the scan start command has three Xe tubes 6R,
6G and 6B are separately emitted once in order of red, green, and blue. The reflected light from the original 4 of each color is reflected by the reflection mirror 9 and then imaged on the CCD 5 by the projection lens 10. The CCD 5 is connected to the CCD substrate 11, photoelectrically converts the reflected light that has formed an image, and captures it as image data. That is, the three images to be captured are three colors of red, green, and blue. The captured three image data are sent to the interface box 2. Further, the interface box 2 sends image data of three colors to the personal computer 3a. By superimposing the three image data on the personal computer 3a,
The image can be displayed in color on the monitor 3b.

The start of scanning can also be instructed by pressing the scan button 8 on the upper surface of the scanner body 1. The selection of which of the personal computer 3a and the scan button 8 is used to instruct the start of scanning can be made by the scanning software.
In addition, the arrangement order of the three color filters 7R, 7G, and 7B
The light emission order of the one Xe tube 6R, 6G, and 6B does not have to be as described above.

Alternatively, only one Xe tube may be used, and the filters of three colors may be switchable. An example thereof is shown in FIG. Further, an enlarged view of the switching filter 38 and the motor 39 is shown in FIG. A gear portion is provided on the outer periphery of the switching filter 38, and is driven by a motor 39 to which a gear 40 is attached. As the switching filter 38, filters of three colors of red, green and blue are attached. By replacing the respective colors and placing them on the optical path of the Xe tube 6, it is possible to irradiate the original with light of the respective colors. The motor 39 is driven, the red filter is aligned with the optical path of the Xe tube 6, and the Xe tube 6 is caused to emit light.
The CCD 5 reads the red reflected light. Similarly, for green and blue, three color images are superposed to form a color image. However, the order of reading is not limited to the above.

An image may be read in black and white by using only one Xe tube without using a filter. Further, a color surface CCD may be used instead of the monochrome surface CCD. In this case, it is not necessary to attach a filter or the like for performing color separation, and it suffices to cause the Xe tube to emit light only once to read the image.

The image reading method is not limited to the above-mentioned method as long as the original can be converted into image data. An example of using a line sensor or a fluorescent tube is shown in FIG. FIG.
In the above example, the CCD 22 uses a line sensor. C
The CD 22 and the fluorescent tube 23 are attached to the carriage 24. The fluorescent tube 23 is turned on before the start of scanning. C
The CD 22 uses the projection lens 25 to capture the reflected light of the original 4 for only one line of the image. The carriage 24 moves in the sub scanning direction. By moving the carriage 24, an image is captured line by line. Finally, the entire image is captured line by line.

As described above, it is not always necessary to use the surface CCD or the Xe tube. The image capturing means is not limited to the CCD but may be any image pickup device. If the original can be illuminated without using the Xe tube, it can be replaced with another illumination device.

In the example shown in FIG. 9, four rollers 21 are attached to the lower surface of the scanner body 1. The roller 21 has a structure as shown in FIG. A cylindrical rotating rubber 14 is attached to the rotating shaft 13. Rotating part 12 on top
Is provided. The rotating unit 12 is attached to the lower surface of the scanner body 1. The rotation angle and the rotation speed of the rotary rubber 14 are transmitted to the interface box 2 by the rotation detection means 15 such as a rotary encoder. The direction detecting means 16 determines the roller 21 from the rotation angle of the rotating unit 12.
To detect the direction of travel.

The scanner body 1 placed on a flat surface such as a desk
The user holds it by hand and moves it on a plane. The roller 21 causes the frictional force between the rotating rubber 14 and the desk and the rotating portion 12 to rotate.
The direction of movement will be changed by the action of. This is because the frictional force of the rotating portion 12 is weaker than the frictional force acting between the rotating rubber 14 and the document surface. By setting the caster angle as shown in FIG. 11, the roller can easily face the traveling direction. The rotating rubber 14 of the roller 21 starts to rotate due to the frictional force with the desk. At this time, the rotation detecting means 15 and the direction detecting means 16 detect the moving direction, moving amount, and moving speed of the scanner body 1. The detection result is transmitted to the interface box 2 as a movement signal of the scanner body 1. Since there are a plurality of rollers 21, even if the scanner body 1 is moved in the direction of rotation on the horizontal plane (θ direction),
The movement of the scanner body 1 can be accurately detected.

An example of a method of detecting the movement of the scanner body 1 will be shown below. FIG. 20 shows an example in which the scanner body 1 is moved along the locus A. FIG. 21 is a flowchart showing the calculation and control executed by the interface box 2.
A block diagram is shown in FIG.

In step S11, the rotation detecting means 15
Detects the rotation amount Δθ1 of the rotary rubber 14 per unit time. The interface box 2 receives the detection result. Further, the direction detecting means 16 is
The rotation angle Δθ2 per unit time is detected. The interface box 2 receives the detection result.

A reset button 19, which will be described later,
Rotating rubber 1 at the origin of scanner body 1 set by the user
The angle of 4 is defined as 0 degree. Further, in order to set the origin of the scanner body 1, the angle of the direction detecting means 16 at the time when the user presses a reset button 19 described later is set to 0 degree.

In step S12, the movement amounts ΔX and ΔY of the scanner body 1 per unit time as shown in FIG. 20 are calculated. X and Y are directional components orthogonal to each other, and ΔX and ΔY are movement vectors in the unit time Δt in the X and Y directions, respectively.

In step S12, a change over time in the moving amount r.Δ based on the rotation amount Δθ1 per unit time and the circumferential length πr / 2 of the rotating rubber 14 (r: radius of the rotating rubber 14).
θ1 is calculated (hereinafter, referred to as calculation result A). Further, the interface box 2 recognizes the rotation angle Δθ2 per unit time as a change in the rotation angle of the rotating unit 12 over time (hereinafter, referred to as a calculation result B).

Calculation result A. By comparing the two data of B for each unit time, the interface box 2 calculates the movement of the roller 21 holding the detection means corresponding to the passage of time. At the unit time Δt, the rotation angle Δθ2 is the direction component of the movement vector, and the movement amount r · Δθ1 is the size component of the movement vector of the rotating rubber 14 (FIG. 20). The XY component of the movement amount r · Δθ1 is
The XY coordinate changes (ΔX, ΔY). ΔX is (r · Δ
θ1) · cos (Δθ2) and ΔY are (r · Δθ1) ·
It can be obtained with sin (Δθ2).

Next, in step S13, the interface box 2 displays ΣΔX, which is the sum of all ΔX.
And ΣΔY, which is the sum of all ΔY. Σ △
X represents the X component of the distance ran moved from the origin of the scanner body 1. ΣΔY represents the Y component of the distance moved from the origin of the scanner body 1. ΣΔX = 0 and ΣΔY = 0 are the origins set by the user with the reset button 19.

Next, in step S14, the interface box 2 causes the ΣΔX and ΣΔY obtained by the calculation.
Is sent to the personal computer 3a. The personal computer 3a displays the input information on the monitor 3b. This display allows the user to know the current coordinates of the scanner body 1.

The interface box 2 displays not only the current coordinates but also other information on the monitor 3b. For example, there is the total (movement distance) of all the movements of the scanner body 1. The moving distance is Σ (r ・ Δθ
It is represented by 1). The rotation angle of the scanner body 1 is Σ
It is obtained by (Δθ2). These values are calculated, sent to the personal computer 3a, and displayed on the monitor 3b. The display on the monitor 3b is performed every unit time. Since the coordinate calculation is performed every unit time Δt, the interface box 2 can accurately display the coordinates regardless of the movement of the scanner body 1 (movement in a straight line, a circle, or both). You can

Next, in step S15, ΣΔX and ΣΔX
It is determined whether or not ΔY exceeds a predetermined value. The predetermined value is a value obtained by subtracting the set overlap amount from the length of the side corresponding to the X direction and the Y direction of the reading range of the scanner body 1. The setting of the overlapping amount will be described later. Therefore, if it is determined that either ΣΔX or ΣΔY exceeds the predetermined value, the process proceeds to step S16.

In step S16, the warning signal is sent to the personal computer 3
output to a. The personal computer 3a displays on the monitor 3b that the overlapping amount has been exceeded. Therefore, the user can know that the image reading range has exceeded the overlapping amount with the previously captured image. Therefore, it is possible to prevent capturing discontinuous images.

If it is determined that neither ΣΔX nor ΣΔY exceeds the predetermined value, the process proceeds to step S17. In step S17, it is determined whether or not the reading start instruction is input from the personal computer 3a. If the read start command is not input, the process returns to step S11 and the above process is repeated.

If a read start command is input, the process proceeds to step S18, and the image reading operation is executed. Next, the process proceeds to step S19, the read image data is output to the personal computer 3a, and the process returns to step S11.

The interface box 2 always receives signals from the rotation detecting means 15 and the direction detecting means 16. Therefore, at the same time when the scanner main holiday 1 starts moving, the calculation of ΣΔX and ΣΔY is started. The user can always recognize information such as the current coordinates of the scanner body 1.

The number of rollers 21 to be attached is not limited to four as long as the movement of the scanner body 1 can be grasped and the scanner body 1 can be stably held on a plane. In order to grasp the movement of the scanner body 1, it is sufficient to provide one roller 21 incorporating the detection means (rotation detection means 15, direction detection means 16). A method of detecting the movement of the scanner body 1 using only one roller 21 having a detecting means will be described below.

It is apparent from the above that one roller 21 can detect the moving direction and the moving amount of the scanner body 1 only in the X and Y directions. FIG. 19 (a plan view seen from the upper side of the scanner body) shows a detection method when the scanner body 1 is rotated. The scanner body 1 includes four rollers 21 (21a, 21b,
21c, 21d). Only the roller 21a is provided with detection means, and the rollers 21b, 21c, and 2 are provided.
No detection means is attached to 1d. For simplicity, it is assumed that the point A is at the same position as the roller 21a. When the scanner body 1 rotates about the point A by an angle θ, the point A does not move, and the points B, C, D, and E move with non-identical movement distances and movement directions. . The roller 21a detects the corresponding rotation angle θ of the point A by the direction detection means 16 (FIG. 10 or FIG. 11), and detects that there is no movement amount by the rotation detection means 15. In the roller 21a, the detection signal that the rotation angle is θ and there is no movement amount can be present only in the case of the movement of FIG. From these two signals, the interface box 2 determines that the scanner body 1 has rotated about the point A by the angle θ.

A case will be described below in which the roller 21 provided with the detecting means is not the roller 21a but the roller 21b when the scanner body 1 is rotationally moved as shown in FIG. For simplicity, it is assumed that the roller 21b is at the same position as the point B. The point B moves on the locus 1. Roller 21
In b, the direction detecting means 16 detects the rotation angle of the point B, and the rotation detecting means 15 detects the movement amount. Roller 2
Since 1b always faces the traveling direction while the point B is moving, the rotating rubber 14 rotates and the rotating portion 12 also rotates at the same time. The direction detecting means 16 constantly detects not only the angle after the rotation of the rotating portion 12 is completed at the position reached by the point B (point B ′) but also the movement of the rotating portion 12 during movement. In the interface 2, the direction detecting means 16 and the rotation detecting means 15
It is determined that the movement is performed with the rotational movement according to the two signals. The interface 2 always calculates the starting position (point B) and the position coordinates at the time of movement,
It is determined that the movement is performed as in the trajectory 1. If the direction detecting means 16 does not always detect the rotation angle of the rotating portion 12,
One more detection means must be provided. However, by always detecting the rotation angle of the rotating unit 12,
It is sufficient to provide one detecting means.

In this way, the direction detecting means 16
The rotation angle or movement direction and the movement amount can be separately output by the rotation detection means 15. Therefore, if only one roller 21 having a detecting means is attached, any movement of the scanner body 1 can be detected.

Further, if two or more rollers are added,
The scanner body 1 can be stably held on a flat surface. The detection means may not be attached to the roller to be added. Therefore, a stable sliding member or the like may be used in place of the roller 21 other than the roller 21 to which the detecting means is attached to maintain the stability of the scanner body 1.

Further, the means for grasping the movement of the scanner body 1 and stably holding it on the plane does not have to have the above-mentioned structure. It suffices if it has a function of detecting and transmitting the moving direction and the moving amount of the scanner body 1. For example, as in the example shown in FIG.
But it is good. The ball type detection means 29 has a ball 26. The ball 26 has holding rollers 30a and 30b.
And the X-direction detection roller 27 and the Y-direction detection roller 28
Is held by. As shown in FIG. 13, the ball type detecting means 29 is attached to the recess provided in the scanner body 1. The method or function of detecting the movement amount and movement direction of the scanner body 1 is the same as that of the roller 21. When the scanner body 1 placed on the desk is moved, the ball 26 rotates due to friction with the desk or the document 4. The rotation of the ball is detected by the X-direction detecting means 27 and the Y-direction detecting means 28. The detected signal is transmitted to the interface box 2 and displayed on the monitor 3b as the movement amount of the scanner body 1 in the X and Y directions and the rotation angle of the scanner body itself.

The interface box 2 transmits the movement signal of the scanner body 1 to the personal computer 3a. The personal computer 3a displays the current position and movement distance of the scanner body 1 on the screen based on the signal. By looking at the screen, the user can know in which direction and how much distance the scanner body 1 has been moved. The moving distance is displayed as X direction, Y direction, and θ (angle). When the reset button 19 of FIG. 2 is selected, the position at that time can be set as the origin.

Further, by attaching the direction fixing switch 31, the user can fix the rotating portion 12 of the roller 21 in any direction (the scanner body 1 can be moved only in the X direction or the Y direction). The direction fixing switch 31 is provided in the scanning software (see FIG. 1).
4). When the direction fixed switch 31 is selected, the X-axis direction,
It is possible to select whether to fix in the Y-axis direction or in any direction. The direction fixing means 37 rotates the rotating portion 21 so that the roller 21 faces the selected direction, and then the rotating portion 12 is fixed by frictional force (FIG. 15). The direction in which the roller 21 faces is determined by the direction detecting means 1
6 can detect. A motor (not shown) is used to drive the rotating portion 21 by the direction fixing means 37. Rotating part 21
A friction member such as rubber is used for fixing. That is, it is fixed by pressing it against the rotating portion 21.

Thus, a plurality of originals 4 larger than the reading range of the scanner body 1 can be read by shifting the reading position, and then the images can be combined on the personal computer 3a to form one image. FIG.
6 and FIG. 17 show an example of the work procedure, and FIG. 18 shows a flowchart. A predetermined range of the original 4 (see FIGS. 16 and 17)
The range A) is read (step S1). Next, the traveling direction of the roller 21 is fixed to the X direction, and the reset button 1
9 is selected (step S2), and the current coordinates are set as the origin (steps S3 to S4). While checking the current position and movement amount of the scanner main body 1 on the monitor 3b, the user adjusts the reading range of the scanner main body 1 to the range next to the range captured last time (range B in FIGS. 16 and 17). Read. At this time, the range B overlaps the range read in the range A by a predetermined amount (step S6). Similarly, the scanner body 1 is also fixed in the Y direction (step S5), and the scanner body 1 is displaced and read one after another. In this way, by sequentially shifting and reading the scanner body 1, the original 4 having a size larger than the reading range can be taken into the personal computer 3a, and the large original 4 can be edited. As shown in FIG. 17, several images captured are combined on the monitor 3b using retouching software. The retouching software is software for editing the read image, which is started up and used by the personal computer 3a.

When reading a plurality of images in an overlapping manner, it is possible to provide a function of notifying the user of an appropriate overlapping amount. As a method to inform the user, monitor 3
Display with b. Sound is emitted from a speaker (not shown) attached to the personal computer 3a, the scanner body 1, or the interface box 2. Any method that can be recognized by the user may be used, such as attaching a light (not shown) instead of the speaker and turning on or off. When the scanner body 1 is moved, if it is determined from the signal from the detection means that the amount of overlap is appropriate, the user is notified. The overlap amount may be set in advance on the device side, or may be set by the user himself. If the user sets
Input from the personal computer 3a.

It is also possible to warn the user when the scanner main body 1 is moving and there is a non-reading range that does not overlap. The method of warning is similar to that of notifying when the appropriate amount of duplication has been reached. The user is warned by the sound from the speaker, the light of the light, or the display on the monitor 3b. A warning is issued when the image in the next range is too far away from the image in the previous range and is not read by the signal from the detection means. This warning function may be added to the scanner body 1 or the like in combination with a function of notifying when an appropriate amount of overlap has occurred, or may be added independently.

[0044]

As described above, according to the image reading device to which the coordinate output function of the present invention is added, the image reading means (5) is provided.
And one or more direction detecting means (16) for detecting the amount of movement of the image reading means, and one or more rotation detecting means (15) for detecting the amount of rotation of the image reading means. Since the output of the direction detecting means (16) and the output of the rotation detecting means (15) are added to the output, the image of a desired size exceeding the reading range is moved while moving the reading position of the scanner. At the time of loading, by the output of the direction detecting means (16) and the output of the rotation detecting means (15),
The user can accurately grasp the current position, the moving distance, and the moving direction.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 2 is a front view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 3 is a perspective view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 4 is a perspective view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 5 is a sectional view showing an embodiment of an image reading apparatus to which a coordinate output function according to the present invention is added.

FIG. 6 is a cross-sectional view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 7 is a perspective view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 8 is a cross-sectional view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 9 is a perspective view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 10 is a perspective view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 11 is a front view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 12 is a perspective view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 13 is a perspective view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 14 is a front view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 15 is a perspective view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 16 is a perspective view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 17 is a front view showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 18 is a flowchart showing an embodiment of an image reading apparatus to which a coordinate output function according to the present invention is added.

FIG. 19 is a bottom view showing an embodiment of the image reading apparatus to which the coordinate output function according to the present invention is added.

FIG. 20 is a conceptual diagram showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

FIG. 21 is a flowchart showing an embodiment of an image reading apparatus to which a coordinate output function according to the present invention is added.

FIG. 22 is a block connection diagram showing an embodiment of an image reading apparatus having a coordinate output function according to the present invention.

[Explanation of symbols]

 1 Scanner Main Body 2 Interface Box 3a Personal Computer (PC) 3b Monitor 4 Original 5 CCD 6 Xe Tube 7a Red Filter 7b Green Filter 7c Blue Filter 8 Scan Button 9 Reflection Mirror 10 Projection Lens 11 CCD Substrate 12 Rotating Part 13 Rotating Axis 14 Rotating Rubber 15 Rotation detection means 16 Direction detection means 17 Scan start button 18 Scanning software window 19 Reset button 20 Display unit setting button 21 Roller 22 CCD 23 Fluorescent tube 24 Carriage 25 Projection lens 26 Ball 27 X direction detection roller 28 Y direction detection Roller 29 Ball type detecting means 30a Holding roller 30b Holding roller 31 Direction fixing switch 37 Direction fixing means 38 Switching filter 39 Motor 40 Gear

Claims (5)

[Claims] 1. An image reading means (5), one or more direction detecting means (16) for detecting a movement amount of the image reading means on a document surface, and a rotation amount of the image reading means on the document surface. One or more rotation detecting means (15) for detecting, and the direction detecting means (16) at the output of the image reading means.
And an output of the rotation detection means (15) are added and output. 2. The coordinate system according to claim 1, further comprising a display device, wherein the output of the direction detecting means (16) and the output of the rotation detecting means (15) are displayed on the display device. Image reader with output function. 3. The present position or movement distance of the image reading means (5) is calculated from the output of the direction detecting means (16) and the output of the rotation detecting means (15) and displayed on the display device. An image reading apparatus to which the coordinate output function according to claim 2 is added. 4. An overlap amount in the output of the image reading means (5) is calculated from the output of the direction detecting means (16) and the output of the rotation detecting means (15), and displayed on the display device. An image reading apparatus to which the coordinate output function according to claim 2 is added. 5. A direction determining means (21) for determining a moving direction of the image reading means (5) is further provided, and the direction determining means (21) is fixed to fix the image reading means (5). The image reading apparatus with the coordinate output function according to claim 1, wherein the moving direction is fixed.