CN100426049C - Image read device and vibration prevention device using same - Google Patents

Abstract

The invention discloses an image reading device with weight to assemble driving shaft, which is characterized by the following: assembling suspending arm beam-shaped weight (19) on the CCD base (23) of optical component (3) in the image reading device through screw (25). The weight (19) contains first component (41), which cross section displays U shape; second component (42), which is set on one end of first component (41) with U shape breadth broader than first component (41); third component (43), which integrates first, second and third component (41)-(43) on another end of first component (41).

Description

Image read-out and the anti-locking apparatus of vibration that is used for it

Technical field

The anti-locking apparatus of vibration that the present invention relates to image read-out and be used for it, the anti-locking apparatus of vibration that particularly relates to image read-out such as duplicating machine, facsimile recorder, combination machine, scanning device and be used for it.

Background technology

Fig. 5 is the planimetric map of an example of the structure of the existing image read-out of expression, and Fig. 6 is the A-A` sectional view among Fig. 5.

With reference to Fig. 5 and Fig. 6, an example of existing image read-out, its structure comprises: drum 1; Transmission shaft 2; Optical unit 3; Light unit 4; Mirror unit 5; Tinsel 6; Guide rail 7; Base plate 8; Glass 9; Lamp 11; Belt wheel 12 (12-1,12-2); Catoptron 13 (13-1～13-3); Be with 14 synchronously; Motor 15; Belt wheel 16; Flywheel 17; Weight 18; Carry the imaging apparatus substrate (as an example is CCD (Charge Coupled Device) substrate, and following table is shown the CCD substrate) 23 of imaging apparatus; Lens 24.

Optical unit 3 is made of CCD substrate 23 and lens 24, and light unit 4 is made of lamp 11 and catoptron 13-1, and mirror unit 5 is made of catoptron 13-2,13-3 and belt wheel 31-1,31-2.Each free coaxial double pulley of this belt wheel 31-1,31-2 constitutes.

Fig. 6 is illustrated in glass 9 and uploads the situation that is equipped with the original copy 10 that reads usefulness.

Between drum 1 and the belt wheel 12, and drum 1 and belt wheel 31 between tinsel 6 is installed.In addition, light unit 4 and mirror unit 5 are installed on tinsel 6, along with moving of tinsel 6, light unit 4 and mirror unit 5 move thereupon.

If the light of the lamp 11 in the light unit 4 is to original copy 10 irradiations, then the literal on the original copy 10, image are reflected by catoptron 13-2, the catoptron 13-3 in the catoptron 13-1 in the light unit 4, the mirror unit 5, and are read by CCD substrate 23 via the lens 24 in the optical unit 3.

In addition, according to the driving of motor 15, via synchronously with 14 and belt wheel 16 make transmission shaft 2 rotations of drum 1, thereby light unit 4 and mirror unit 5 on the tinsel 6 are moved abreast with original copy 10.

Yet, in this existing image read-out, thereby exist action that vibration optical unit 3 vibrative shortcomings take place owing to motor 15.Fig. 7 is the figure of an example of the straight line 21 of record in the expression original copy 10, the figure of Fig. 8 example that reads the curve 22 on Figure 20 that to be expression read by CCD substrate 23.

Straight line 21 shown in Fig. 7 is read by the CCD substrate 23 in the optical unit 3, but because the vibration of optical texture 3 produces on the reading images and distorts, becomes curve 22 as shown in Figure 8.

For this reason, in existing image read-out,, flywheel 17 (with reference to Fig. 5) is installed on motor 15 as an example of this countermeasure.Its detailed figures is shown among Fig. 9.In addition, in the figure, give prosign, therefore omit its explanation the structure division identical with Fig. 5.Vibration by these flywheel 17 decay motor 15.

In addition, as other examples of its countermeasure, weight 18 (with reference to Fig. 5) is installed on transmission shaft 2.Its detailed figures is shown among Figure 10.In addition, in the figure, give prosign, therefore omit its explanation the structure division identical with Fig. 5.Vibration by these weight 18 decay motor 15.

On the other hand, example as image read-out with the function that prevents this vibration, disclosure of the Invention has been arranged on sensor support member 30, be fixed with line map sensor (lineimage sensor) 52, vibration-absorbing body (liquid 41, weight 42) is installed below this sensor support member 30, suppress to transmit vibration (for example, with reference to patent documentation 1) by this vibration-absorbing body to line map sensor 52.

[patent documentation 1] spy opens 2001-166396 communique (paragraph 0021～0025,0033～0034, Fig. 1～Fig. 4)

Yet in the existing image read-out shown in Fig. 5, flywheel 17 prices that are installed on motor 15 are higher, and the shortcoming that exists cost to rise if weight 18 is installed on transmission shaft 2, needs to increase the installation region, exist device to become big shortcoming.

On the other hand, patent documentation 1 disclosed image read-out, vibrating mass (liquid 41, weight 42) is built in the hollow box body 31 (with reference to Fig. 2 in the patent documentation 1 (A), (B)), or (with reference to the Fig. 3 in the patent documentation 1, Fig. 4) be installed via elastic component 70, and be not directly to be installed on the line map sensor 52, but install (with reference to Fig. 2 in the patent documentation 1～Fig. 4) by sensor support member 30.

Relative therewith, the vibration-absorbing body in the image read-out of the present invention is weight, is this weight is directly installed on (with reference to the Fig. 1 in the real desire) on the CCD substrate.Therefore, the invention of expressing of this structure and patent documentation 1 is different fully.

Summary of the invention

Therefore, the objective of the invention is to, providing does not need flywheel is installed on motor and weight is installed on transmission shaft, and can prevent the vibration of optical unit, can prevent the image read-out of distortion of reading images and the anti-locking apparatus of vibration that is used for it thus.

In order to solve described problem, image read-out of the present invention, it is characterized in that, use imaging apparatus to read the image of putting down in writing in the original copy, comprise correspondence and have vibration number from the amplitude that adds focus, have the weight of semi-girder shape of preceding end load of weight of the amplitude of this vibration of decay, described weight is installed on the imaging apparatus substrate that has carried described imaging apparatus.

In addition, locking apparatus is prevented in vibration of the present invention, it is characterized in that, be used for using imaging apparatus to read the image read-out of the image that original copy puts down in writing, has vibration number by correspondence from the amplitude that adds focus, the weight of semi-girder shape of preceding end load of weight with amplitude of this vibration of decay constitutes, and described weight is installed on the imaging apparatus substrate that has carried described imaging apparatus.

According to the present invention, because described weight is directly installed on the imaging apparatus substrate, therefore can suppress vibration effectively, and because this is simple in structure, so also can reduce cost.

According to the present invention, by comprising described structure, do not need flywheel is installed on motor and weight is installed on transmission shaft, and can prevent the vibration of optical unit, can prevent the distortion of reading images thus.

Be weight owing to vibration-absorbing body in addition, thus simple in structure, and can reduce cost.In addition owing to can cut down the installation region, but the therefore miniaturization of implement device.Be on the CCD substrate owing to weight is directly installed on the place that needs to suppress to vibrate in addition, therefore can suppress effectively to vibrate.

Description of drawings

Fig. 1 is the stereographic map of an example of image read-out of the present invention.

Fig. 2 is the stereographic map of first embodiment of the anti-locking apparatus of vibration of the present invention.

Fig. 3 is the mode chart of an example of the action of expression first embodiment.

Fig. 4 is the stereographic map of second embodiment of the anti-locking apparatus of vibration of the present invention.

Fig. 5 is the vertical view of an example of the structure of the existing image read-out of expression.

Fig. 6 is the A-A` sectional view of Fig. 5.

Fig. 7 is the figure of an example of the straight line 21 of record in the expression original copy 10.

Fig. 8 is the figure of the example that reads the curve 22 on Figure 20 that reads by CCD substrate 23 of expression.

Fig. 9 is the existing figure that flywheel 17 is installed on an example of motor 15 of expression.

Figure 10 is the existing figure that weight 18 is installed on an example of transmission shaft 2 of expression.

Among the figure, 1-drum, 2-transmission shaft, 3-optical component, 4-light unit, 5-mirror unit, 6-tinsel, 7-guide rail, 8-base plate, 9-glass, 11-lamp, 12-belt wheel, 13-catoptron, 14-are with synchronously, 15-motor, 16-belt wheel, 19-weight, 23-CCD (Charge Coupled Device) substrate, 24-lens, 25-screw, 41-first member, 42-second member, 43-the 3rd member, 44-the 4th member.

Embodiment

Below, with reference to accompanying drawing, embodiments of the present invention are described.Fig. 1 is the stereographic map of an example of image read-out of the present invention.In addition, this figure has only represented the part that relates to the anti-locking apparatus of vibration in the image read-out, and other structure divisions are identical with the conventional example shown in Fig. 5.In addition, give prosign, therefore omit its explanation structure division identical among Fig. 1 with Fig. 5.

With reference to Fig. 1, weight 19 is installed on the CCD substrate 23 of optical unit 3 by screw 25.This weight 19 is the anti-locking apparatus of vibration of the present invention.These weight 19 correspondences have the vibration number that adds the amplitude of focus from motor 15 grades, form the semi-girder shape of preceding end load of the weight of the amplitude with this vibration of decay.

(embodiment one)

Fig. 2 is the stereographic map of first embodiment of the anti-locking apparatus of vibration of the present invention.In addition, give prosign, therefore omit its explanation structure division identical among this figure with Fig. 1.With reference to this figure, weight 19-1 is by constituting as lower member: first member 41, and its cross section is the コ shape; Second member 42, it is located at the end of an end of first member 41, and the cross section is the コ shape and width is wideer than first member 41; The 3rd member 43, it is located at the end of the other end of first member 41, and described first member 41～the 3rd member 43 forms as one.

But, also can adopt the structure that is bonded with each other with first member 41 and second member 42 as individual member.

In addition, on the 3rd member 43, be formed with the not shown hole that is used to make screw 25 perforations,, weight 19-1 be installed on the CCD substrate 23 by screw 25 by this hole.In addition, the installation site of weight 19-1 and covers lens 24 by weight 19-1 above lens 24.

Below, the action of first embodiment is described.Fig. 3 is the mode chart of an example of the action of expression first embodiment.In addition, give prosign, therefore omit its explanation structure division identical among this figure with Fig. 2.

As shown in Figure 3, the impact that takes place during motor 15 (with reference to Fig. 5) action, send the framework of image read-out to, send optical unit 3 afterwards to, weight 19-1 is by vibration (vibration A), counteracting, decay send the vibration (vibration B) of optical unit 3 to, thereby prevent the vibration of CCD substrate 23.

According to the first embodiment of the present invention, needs are installed on the flywheel 17 of motor 15, and can reduce cost.In addition, needs are installed on the weight 18 of transmission shaft 2, but and the miniaturization of implement device.

(embodiment two)

Fig. 4 is the stereographic map of second embodiment of the anti-locking apparatus of vibration of the present invention.In addition, give prosign, therefore omit its explanation structure division identical among this figure with Fig. 2.With reference to this figure, the difference of the weight 19-1 among the shape of weight 19-2 and first embodiment is that the 4th member 44 of second member 42 among corresponding first embodiment forms flat board.Other shapes are identical with first embodiment.

According to a second embodiment of the present invention, owing to needn't carry out bending machining to the 4th member 44, so can cut down operation.

(industrial utilizability)

In the present embodiment, shape as weight 19, in Fig. 2 and Fig. 4, represented an example respectively, but be not limited to these, as long as can satisfy following condition, also applicable to the present invention, the promptly corresponding vibration number that has from the amplitude that adds focus has the weight of semi-girder shape of preceding end load of weight of the amplitude of this vibration of decay.

Claims (6)

1, a kind of image read-out reads the image of putting down in writing in the original copy by using the CCD substrate, wherein,

The weight of the semi-girder shape of end load before described image read-out comprises, the weight of described weight, be and weight corresponding from the vibration that adds certain amplitude of having of focus and vibration number and that can decay to this vibration, described weight is installed on the CCD substrate.

2, image read-out according to claim 1, wherein,

Described weight is by constituting as lower member: first member, and its cross section is the コ shape; Second member, it is located at the end of an end of described first member, and the cross section is the コ shape and width is wideer than described first member; The 3rd member, it is located at the end of the other end of described first member,

Described first member～the 3rd member forms as one, and described the 3rd member is installed on the described substrate.

3, image read-out according to claim 1, wherein,

Described weight is by constituting as lower member: first member, and its cross section is the コ shape; Second member, its be located at described first member an end the end and for dull and stereotyped; The 3rd member, it is located at the end of the other end of described first member,

Described first member～the 3rd member forms as one, and described the 3rd member is installed on the described substrate.

4, the anti-locking apparatus of a kind of vibration is used for using the CCD substrate to read the image read-out of the image that original copy puts down in writing, wherein,

The anti-locking apparatus of described vibration is made of the weight of the semi-girder shape of preceding end load, and the weight of described weight is and and weight that can to this vibration decay corresponding from the vibration that adds certain amplitude of having of focus and vibration number,

Described weight is installed on the CCD substrate.

5, the anti-locking apparatus of vibration according to claim 4, wherein,

Described weight is by constituting as lower member: first member, and its cross section is the コ shape; Second member, it is located at the end of an end of described first member, and the cross section is the コ shape and width is wideer than described first member; The 3rd member, it is located at the end of the other end of described first member,

Described first member～the 3rd member forms as one, and described the 3rd member is installed on the described substrate.

6, the anti-locking apparatus of vibration according to claim 4, wherein,

Described weight is by constituting as lower member: first member, and its cross section is the コ shape; Second member, its be located at described first member an end the end and for dull and stereotyped; The 3rd member, it is located at the end of the other end of described first member,

Described first member～the 3rd member forms as one, and described the 3rd member is installed on the described substrate.

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