JPH1035023A - Scanner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scanner excellent in operability in which the gripping angle of the scanner body can be altered freely with respect to the scanning face when an operator uses the scanner and an operating means, e.g. a recording means or a reading means, can be operated at a regular position even if the gripping angle is altered during the scanning operation. SOLUTION: A pin-like guide member 33 having upper part secured to a housing 20 is fitted, movably up and down, with a supporting member 31 fixed with an ink jet head 4. A roller B80 disposed at the lower part of the ink jet head 4 is urged toward the scanning face side by means of a compressing spring 35 interposed between the housing 20 and the supporting member 31. Since scanning is performed with the roller B80 rotating with respect to the scanning face, sliding resistance against the scanning face is decreased and smooth scanning is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scanning device in which a scanning device outputs a scanning signal in accordance with a moving distance for scanning a scanning surface, and operates an operating means based on the scanning signal. It is.

[0002]

2. Description of the Related Art Conventionally, as a scanning apparatus of this kind, for example, a scanning apparatus used by an operator by scanning an upper surface of a printing medium or a printed material, that is, a scanning surface, such as a small portable printer or a scanner. The device is present.

According to these scanning devices, an operator performs image printing or image reading by scanning the housing with the arrangement posture of the housing at a certain angle with respect to the scanning surface. ing.

[0004]

However, according to these scanning devices, the operator must scan the housing with the arrangement posture of the housing at a certain angle with respect to the scanning surface. did not become. Otherwise, for example, when the scanning device is a printing device, if the angle of the housing with respect to the scanning surface is changed during printing, an error occurs with respect to the normal printing position with respect to the scanning position in the scanning direction, and printing is performed. There is a problem that characters are distorted.

Similarly, when the scanning device is a scanner, if the angle of the housing is changed with respect to the scanning surface during reading, an error occurs in the scanning position in the scanning direction with respect to the normal reading position, and the reading is performed. There is a problem that an image is distorted due to an error.

[0006] In addition, the method of gripping the housing of the scanning device by the operator is not limited to a certain gripping method because the angle with respect to the scanning direction cannot be changed despite individual differences between operators. It was limited and there was a problem in operability.

As a method of solving these problems, the present applicant has proposed a scanning device described in the specification and drawings of Japanese Patent Application No. 8-118799.

However, when the above method is used, for example, when the scanning device is a scanner, a spacer is provided on the scanner, but the sliding resistance between the spacer and the scanning surface is large, and there is a problem in operability.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and when an operator uses a scanning device,
The gripping angle of the main body of the scanning device with respect to the scanning surface can be freely changed, and even if the angle is changed during scanning, for example, operating means such as recording means and reading means operate at regular positions. It is an object of the present invention to provide a scanning device which can perform scanning and is excellent in operability.

[0010]

In order to achieve this object, a scanning device according to a first aspect of the present invention provides a scanning device which outputs a scanning signal corresponding to a moving distance of a scanning device scanning a scanning surface. A signal output unit, and an operation unit that operates based on an output signal of the scanning signal output unit. In particular, the scanning signal output unit is provided when the arrangement posture of the scanning device body changes its angle with respect to the scanning surface. Is configured to output a scanning signal according to the amount of the angle change, and the operating means operates based on the scanning signal according to the amount of the angle change output by the scanning signal output means. Positioning means for correcting the arrangement position of the operating means with respect to the scanning device main body, and scanning surface contact means for smoothly scanning the operating means while contacting the scanning surface are provided. .

Therefore, according to this scanning device, the scanning signal output means outputs a scanning signal in accordance with the moving distance of the scanning device scanning the scanning surface, and the operating means operates based on the scanning signal. . In this case, when the arrangement posture of the scanning device body changes its angle with respect to the scanning plane, the scanning signal output means outputs a scanning signal corresponding to the amount of the angle change, and outputs the scanning signal according to the amount of the angle change. In order to operate the operating means based on the scanning signal, the arrangement position of the operating means is, of course, corrected with respect to the main body of the scanning device, and the scanning surface contacting means smoothly scans on the scanning surface. . Accordingly, the operating means always operates at the regular position, so that the operator can freely change the grip angle of the scanning device main body with respect to the scanning surface, and the operability is good.

According to a second aspect of the present invention, the scanning surface contact means is formed of, for example, a cylindrical or spherical rotating body. Therefore, it is possible to scan more smoothly in the scanning direction.

Further, in the scanning device according to the present invention, the position correcting means is constituted by a support mechanism which movably supports the operating means in a direction intersecting the scanning surface. Therefore, the position of the operating means can be simply and accurately corrected by the support mechanism.

Further, in the scanning device according to the present invention, the supporting mechanism supports a supporting member for supporting the operating means, and the supporting member so as to be movable in a direction intersecting the scanning surface. And a guide member provided in the scanning device main body. Therefore, in accordance with the change in the angle of the scanning device main body, the support member supporting the operating means moves in the direction intersecting the scanning plane along the guide member,
Therefore, the position of the operating means can be simply and accurately corrected.

In the scanning device according to the present invention, the support member is pivotally supported around an axis whose base end crosses the direction of movement of the support member, and the operating means is provided at a release end. It has a support arm that supports. Therefore, even if the operator changes the holding angle of the scanning device body with respect to the scanning surface,
Since the angle made by the operating means with respect to the scanning plane is constant,
The position of the operating means can be corrected more accurately.

Further, in the scanning device according to the sixth aspect, the guide member is formed to have a predetermined curvature in a direction of the guide shaft. Therefore, when correcting the position of the operating means according to the angle change of the scanning device main body, it is possible to minimize the change in the angle made by the operating means with respect to the scanning surface.

The scanning device according to a seventh aspect of the present invention includes a spring means for urging the support member in one direction so that the operating means always contacts the scanning surface. Therefore, the position of the operating means can be always accurately corrected by immediately following the change in the angle of the scanning device body.

According to the scanning device of the present invention, the position correcting means has a base end supported by the main body of the scanning device and a free end intersecting the scanning surface by its own elasticity. And a spring-made support member having an open end supporting the operating means. Therefore, the position of the operating means can be corrected with a simple configuration.

According to a ninth aspect of the present invention, the position correcting means has a base end pivotally supported about an axis substantially parallel to the scanning surface with respect to the scanning device main body. The open end is swingable about the base end in a direction intersecting the scanning plane, and is constituted by a beam-shaped support having the operating end supported on the open end.
Therefore, the position of the operating means can be corrected with a simple configuration.

According to a tenth aspect of the present invention, the operating means comprises a recording means for recording an image such as a character or a graphic on a scanning surface. Therefore, even if the angle of the scanning device changes, the recording position by the recording means can be accurately corrected to obtain a printed image without distortion.

[0021] According to the scanning device of the eleventh aspect, the recording means is constituted by an ink jet head. Therefore, even if the scanning device body changes its angle,
A print image without distortion can be obtained by the inkjet head that is not in contact with the scanning surface.

According to a twelfth aspect of the present invention, the operating means is constituted by reading means for reading an image recorded on the scanning surface. Therefore, even if the angle of the scanning device changes, the reading position by the reading means can be accurately corrected and reading without error can be accurately performed.

According to the scanning apparatus of the present invention, the scanning signal output means outputs a scanning signal by operating by receiving power from a ground roller which rotates while being in contact with the scanning surface. It is constituted by.
Therefore, it is possible to easily and reliably measure the scanning movement distance of the scanning device and the change in the angle of the scanning device main body with respect to the scanning surface.

Further, according to the scanning device of the present invention, the scanning signal output means is configured to output a scanning signal by a laser Doppler method. Therefore, it is possible to easily and accurately measure the scanning movement distance of the scanning device and the angle change of the scanning device main body with respect to the scanning surface.

[0025]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a scanning apparatus according to the present invention.

First, FIG. 1 schematically shows the configuration of the scanning printing apparatus according to the present embodiment. An opening is provided on the lower surface of the housing 20 which is the main body of the printing apparatus, and the opening is provided so as to protrude downward, and is rotatable. In addition, the ink jet head 4 is provided adjacent to the ink jet head. The ink jet head 4 constitutes the operating means and the recording means of the present invention, and the direction in which the nozzle rows are arranged and the rotation axis of the ground roller 2 are set in parallel.

Rollers B80 are provided on both lower sides of the ink jet head 4 for maintaining a constant distance between the nozzles of the ink jet head 4 and the scanning surface and for smoothly scanning the scanning surface. During scanning of the scanning type printing apparatus, the scanning type printing apparatus contacts and rotates with a scanning surface. Incidentally, the roller B80 constitutes the scanning surface contact means and the rotating body of the present invention. Although the roller B80 is formed in a cylindrical shape, any configuration may be used as long as the roller B80 rotates smoothly in contact with the scanning surface, and for example, may be spherical.

An infrared communication unit 6 for communicating with an external device is provided on the upper side surface of the housing 20.

The ground roller 2 rotates about the shaft 3 by moving while contacting the scanning surface, and the encoder 8 connected to the ground roller 2 constitutes a scanning distance signal output means of the present invention. A slit disc 8a connected to the ground roller 2 via an endless belt 10,
And a photo-interrupter 8c for detecting the light of the slit 8b of the slit disk 8a. One pulse signal is output for each predetermined rotation angle of the ground roller 2. In the housing 20, an ink tank 12 for supplying ink to the inkjet head 4 via the tube 5, a battery 14 for supplying electric power, and a substrate 16 on which a CPU and the like described later are mounted are incorporated. ing.

FIG. 2 shows a detailed view of the position correcting mechanism. Here, FIG. 2A is a front view, and FIG. 2B is a right side view. The support member 31 fixedly supports the upper part of the inkjet head 4 and has a through-hole 32 slightly inclined with respect to the vertical direction. The pin-shaped guide member 33 has an upper part fixed to the housing 20 and an intermediate part formed by the support member 3.
One of the through-holes 32 is fitted, and a flange-shaped projection 34 is provided at a lower portion to prevent the support member 31 from dropping off. The support member 31 and the guide member 33 constitute a position correcting unit and a support mechanism of the present invention. The coil-shaped compression spring 35 inserted and supported by the guide member 33 constitutes spring means of the present invention,
The upper fixed end of the guide member 33 and the support member 31
And the ink jet head 4 is always compressed on the scanning surface, that is,
It functions so as to press against the upper surface of the recording medium.

Next, an electrical control configuration of the scanning printing apparatus according to the present embodiment will be described with reference to FIG. First, CPU
Reference numeral 50 controls the entire printing apparatus including a head driving unit 56 described later. The ROM 52 stores various programs that define the operation of the printing device. The RAM 54 is provided with an area for temporarily storing and holding print data, an arithmetic area used in various arithmetic processes, and the like. The head driving section 56 drives the inkjet head 4.

The operation of the scanning printing apparatus according to the present embodiment in the above configuration, particularly, the case where the operator changes the angle of the housing 20 with respect to the scanning surface will be described. Character data and the like are transmitted from the external device through the infrared communication unit 6 into the scanning printing device and stored in the RAM 54. When the operator touches the ground roller 2 and the roller B80 of the housing 20 on the scanning surface and scans the housing 20 to the right in FIG. 1, the ground roller 2 and the roller B80 rotate, and the encoder 8 is turned on. A pulse signal based on the amount of movement of the body 20 is output. The CPU 50 controls the head driving unit 56 in accordance with the pulse signal and drives the ink jet head 4 appropriately, so that the character data of the RAM 54 can be smoothly printed on the scanning surface.

Here, when the housing 20 is tilted counterclockwise by an angle θ in a state where the ground roller 2 and the roller B 80 are in contact with and stopped against the scanning surface (FIG. 4), the housing 20 Rotate around. When the rotation of the housing 20 is viewed from the encoder 8, when the radius of the ground roller 2 is r,
The encoder 8 detects the distance s1 via the belt 10 and outputs the distance s1 to the CPU 50. At this time, the inkjet head 4 also moves by the distance s1.
That is, since the support member 31 is retracted to the upper side of the housing 20 along the guide member 33 against the action of the compression spring 35, the inkjet head 4 moves by the distance s1, so that printing is performed at a desired position. (Accurately, in the case of the present embodiment, when the state of FIG. 1 is compared with the state of FIG. 4, the angle of the ink jet head 4 with respect to the scanning surface changes, so that the ink discharged from the ink jet head 4 In the direction). The same applies even when the angle of the housing 20 with respect to the scanning surface is changed during scanning.

Even if the angle of the housing 20 with respect to the scanning surface is changed during this scanning, only the ground roller 2 and the roller B80 are in contact with the scanning surface, so that the sliding resistance with respect to the scanning surface is reduced. Scanning can be performed smoothly with less.

The configuration of the position correcting means may be the following various forms other than the above-described embodiment.

That is, for example, as shown in FIG. 5, instead of the linear guide member 33, a guide member 36 which is curved at a predetermined curvature in the axial direction thereof is fixed to the housing 20. The guide member 36 is provided on the support member 31.
Is provided with a through-hole 37 having a curvature that matches the curvature of the guide member 36. With this configuration, even when the angle of the housing 20 with respect to the scanning surface changes, it is possible to minimize a change in the angle of the inkjet head 4 with respect to the scanning surface.

FIG. 6 shows another example of the position correcting means.
As shown in (1), the use of the spring support 38 can simplify the configuration of the position correcting means. The upper portion of the spring support 38 is fixedly supported by the housing 20.
The middle part is bent in a substantially rectangular shape, and the ink jet head 4 is fixed to the lower end. in this case,
The open end of the spring-made support body 38 can be elastically deformed in the vertical direction by its own elasticity, so that it is possible to appropriately cope with a change in the angle of the housing 20. ing. And the spring support 3
When the type of the ink jet head 8 and the mounting position and angle thereof are optimally configured, even if the angle of the housing 20 with respect to the scanning surface is changed, the change in the droplet deposition position of the ink ejected from the ink jet head 4 and It is possible to suppress the angle change.

FIG. 7 shows still another example of the position correcting means.
Shown in In the figure, a cantilever type beam-shaped support 39 is
A fulcrum 40 at the right end is pivotally supported substantially parallel to the scanning surface with respect to the housing 20, and a left end thereof can swing up and down about the fulcrum 40 in a direction intersecting the scanning surface. The inkjet head 4 is fixed to the left end. According to this configuration, at the time of scanning of the housing 20, the roller B80 is in contact with the scanning surface by its own weight of the inkjet head 4. Then, even when the angle of the housing 20 with respect to the scanning surface changes, the beam-shaped support member 39 rotates about the fulcrum 40 while the roller B80 contacts the scanning surface. In the case of this configuration, the same operation and effect as in the above embodiment can be obtained.

Further, as another example of the position correcting means, the angle of the ink jet head 4 with respect to the scanning surface may be always substantially constant. For example, as shown in FIG. 8, the support member 31 of the above-described embodiment is connected to a fulcrum 43 at one end and a support arm 41 is connected to the fulcrum 42 at the other end to the inkjet head 4 to provide a support member 34. And the angle formed by the ink jet head 4 can be freely changed. It is preferable to provide three or more rollers B80, for example, four rollers B80 in order to keep the angle of the inkjet head 4 with respect to the scanning surface constant.

The operating means may be not only a recording means such as the above-described ink jet head 4 but also a reading means such as a scanner which scans and reads an image previously recorded on a scanning surface. That is, a scanner 94 is provided in place of the inkjet head 4 in FIG. 2, and a scanner drive unit 96 is provided in place of the head drive unit 56 in FIG. Alternatively, both the inkjet head 4 and the scanner 94 may be provided, and both the head driving unit 56 and the scanner driving unit 96 may be provided. In short, the operating means may perform any operation according to the scanning distance.

The scanning signal output means for detecting and outputting the scanning movement distance of the scanning device may be other than the encoder as described above. For example, Japanese Patent Application No. Hei 7-265555
Alternatively, a laser Doppler-type scanning distance signal output unit as described in the specification and the drawings of the publication may be used.

[0042]

As is apparent from the above description, according to the scanning device of the first aspect of the present invention, the scanning device outputs a scanning signal corresponding to the moving distance for scanning the scanning surface. A signal output unit, and an operation unit that operates based on an output signal of the scanning signal output unit. In particular, the scanning signal output unit is provided when the arrangement posture of the scanning device body changes its angle with respect to the scanning surface. Is configured to output a scanning signal according to the amount of the angle change, and the operating means operates based on the scanning signal according to the amount of the angle change output by the scanning signal output means. In a scanning device provided with a position correcting means for correcting an arrangement position of an operating means with respect to the scanning apparatus main body, a scanning surface contacting means for smoothly scanning the operating means while contacting the scanning surface is provided. It is characterized in that.

Therefore, according to this scanning device, the scanning signal output means outputs a scanning signal in accordance with the moving distance of the scanning device scanning the scanning surface, and the operating means operates based on the scanning signal. . In this case, when the arrangement posture of the scanning device body changes its angle with respect to the scanning plane, the scanning signal output means outputs a scanning signal corresponding to the amount of the angle change, and outputs the scanning signal according to the amount of the angle change. In order to operate the operating means based on the scanning signal, the arrangement position of the operating means is, of course, corrected with respect to the main body of the scanning device, and the scanning surface contacting means smoothly scans on the scanning surface. . Accordingly, the operating means always operates at the regular position, so that the operator can freely change the grip angle of the scanning device main body with respect to the scanning surface, and the operability is good.

According to a second aspect of the present invention, the scanning surface contact means is formed of, for example, a cylindrical or spherical rotating body. Therefore, it is possible to scan more smoothly in the scanning direction.

Further, in the scanning device according to the third aspect, the position correcting means is constituted by a support mechanism which movably supports the operating means in a direction intersecting with the scanning surface. Therefore, the position of the operating means can be simply and accurately corrected by the support mechanism.

Further, in the scanning device according to the present invention, preferably, the support mechanism supports a supporting member for supporting the operating means, and the supporting member movably in a direction intersecting the scanning surface. And a guide member provided in the scanning device main body. Therefore, in accordance with the change in the angle of the scanning device main body, the support member supporting the operating means moves in the direction intersecting the scanning plane along the guide member,
Therefore, the position of the operating means can be simply and accurately corrected.

According to a fifth aspect of the present invention, in the scanning device, the support member is pivotally supported around an axis whose base end crosses the moving direction of the support member, and the operating means is provided at a release end. It has a support arm that supports. Therefore, even if the operator changes the holding angle of the scanning device body with respect to the scanning surface,
Since the angle made by the operating means with respect to the scanning plane is constant,
The position of the operating means can be corrected more accurately.

Further, in the scanning device according to the present invention, the guide member is formed to have a predetermined curvature in a direction of the guide shaft. Therefore, when correcting the position of the operating means according to the angle change of the scanning device main body, it is possible to minimize the change in the angle made by the operating means with respect to the scanning surface.

Further, the scanning device according to the present invention is provided with a spring means for urging the support member in one direction so that the operating means always contacts the scanning surface. Therefore, the position of the operating means can be always accurately corrected by immediately following the change in the angle of the scanning device body.

According to the scanning device of the present invention, the position correcting means has a base end supported by the main body of the scanning device, and an open end intersecting the scanning surface by its own elasticity. And a spring-made support member having an open end supporting the operating means. Therefore, the position of the operating means can be corrected with a simple configuration.

According to a ninth aspect of the present invention, the position correcting means has a base end pivotally supported with respect to the main body of the scanning device around an axis substantially parallel to the scanning surface. The open end is swingable about the base end in a direction intersecting the scanning plane, and is constituted by a beam-shaped support having the operating end supported on the open end.
Therefore, the position of the operating means can be corrected with a simple configuration.

Further, according to the scanning device of the tenth aspect, the operating means is constituted by a recording means for recording an image such as a character or a graphic on the scanning surface. Therefore, even if the angle of the scanning device changes, the recording position by the recording means can be accurately corrected to obtain a printed image without distortion.

[0053] According to the scanning device of the eleventh aspect, the recording means is constituted by an ink jet head. Therefore, even if the scanning device body changes its angle,
A print image without distortion can be obtained by the inkjet head that is not in contact with the scanning surface.

According to a twelfth aspect of the present invention, the operating means is constituted by a reading means for reading an image recorded on the scanning surface. Therefore, even if the angle of the scanning device changes, the reading position by the reading means can be accurately corrected and reading without error can be accurately performed.

According to a thirteenth aspect of the present invention, the scanning signal output means outputs a scanning signal by operating by receiving power from a ground roller that rotates in contact with the scanning surface. It is constituted by.
Therefore, it is possible to easily and reliably measure the scanning movement distance of the scanning device and the change in the angle of the scanning device main body with respect to the scanning surface.

Further, according to the scanning device of the present invention, the scanning signal output means is configured to output a scanning signal by a laser Doppler method. Therefore, it is possible to easily and accurately measure the scanning movement distance of the scanning device and the angle change of the scanning device main body with respect to the scanning surface.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a configuration of a scanning printing apparatus according to an embodiment of the present invention.

FIG. 2 is a detailed view of a position correction mechanism.

FIG. 3 is a diagram illustrating an electrical configuration of the scanning printing apparatus.

FIG. 4 is a diagram in which a housing of the scanning type printing apparatus is inclined.

FIG. 5 is a diagram illustrating a configuration example of a position correction unit of the scanning device.

FIG. 6 is a diagram illustrating a configuration example of a position correction unit of the scanning device.

FIG. 7 is a diagram illustrating a configuration example of a position correction unit of the scanning device.

FIG. 8 is a diagram illustrating a configuration example of a position correction unit of the scanning device.

[Description of Signs] 4 Inkjet head 8 Encoder 31 Support member 33 Guide member 35 Compression spring 36 Guide member 38 Spring support 39 Beam support 41 Support arm 80 Roller B 94 Scanner

Claims (14)

[Claims] 1. A scanning device comprising: a scanning signal output unit that outputs a scanning signal corresponding to a moving distance over which a scanning device scans a scanning surface; and an operating unit that operates based on the scanning signal of the scanning signal output unit. In the apparatus, the scanning signal output unit is configured to output a scanning signal according to an amount of the angle change when the arrangement posture of the scanning device body changes an angle with respect to the scanning surface; Position correcting means for correcting an arrangement position of the operating means with respect to the scanning device main body so that the operating means operates based on a scanning signal corresponding to the amount of the angle change outputted by the output means; A scanning surface contacting means for performing smooth scanning while contacting the scanning surface with respect to the scanning means. 2. The scanning device according to claim 1, wherein said scanning surface contacting means comprises a cylindrical or spherical rotating body. 3. The apparatus according to claim 1, wherein said position correcting means comprises a support mechanism for supporting said operating means movably in a direction intersecting with said scanning plane.
3. The scanning device according to claim 1. 4. The scanning mechanism according to claim 1, further comprising: a support member that supports the operation unit; and a guide member that supports the support member so as to be movable in a direction intersecting the scanning surface, and is provided on the scanning device body. 4. The scanning device according to claim 3, wherein the scanning device is configured by: 5. The support member includes a support arm having a base end pivotally supported about an axis in a direction intersecting a moving direction of the support member and a release end supporting the operating means. The scanning device according to claim 4, wherein: 6. The guide member according to claim 4, wherein said guide member is curved at a predetermined curvature in a direction of said guide shaft.
Or the scanning device according to 5. 7. The scanning device according to claim 4, further comprising a spring device for urging the support member in one direction so that the operation device always contacts the scanning surface. apparatus. 8. The position correction means, wherein a base end is supported by the scanning device main body, and a released end is elastically displaceable in a direction intersecting the scanning surface by a self-held elasticity, and The scanning device according to claim 1, wherein the scanning device is configured by a spring-made support member that supports the operation unit at a release end. 9. The position correction means includes a base end pivotally supported about an axis substantially parallel to the scanning surface with respect to the scanning device main body, and a release end centered on the base end. The scanning device according to claim 1, wherein the scanning device is configured to be able to swing in a direction intersecting with the scanning surface, and is configured by a beam-shaped support member that supports the operation unit at an open end. 10. The scanning device according to claim 1, wherein said operating means is constituted by a recording means for recording an image such as a character or a graphic on a scanning surface. 11. The scanning device according to claim 10, wherein the recording unit is an inkjet head that ejects ink. 12. The scanning device according to claim 1, wherein said operating means is constituted by a reading means for reading an image recorded on said scanning surface. 13. The scanning signal output means according to claim 1, wherein said scanning signal output means is constituted by an encoder which outputs a scanning signal by operating by receiving power from a ground roller which rotates in contact with said scanning surface. 13. The scanning device according to any one of 12 above. 14. The scanning device according to claim 1, wherein said scanning signal output means is configured to output a scanning signal by a laser Doppler method.