JPH0927891A - Image reader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent deterioration in the image quality due to deposition of dusts or the like onto a mirror of a reduction optical system. SOLUTION: A plate member 30 projected from a rear side of a 1st mirror 24 to a front side under the 1st mirror 24 arranged with a tilt from a vertical direction upward and having the same length as at least a width of the 1st mirror 24 is arranged so as not to interrupt an optical path L, and a viscosity member 31 having a prescribed viscosity is coated or clad to an upper face of the plate member 30. Dusts or the like floating around the 1st mirror 24 is caught by the viscous member 31 on the plate member 30 and the dusts or the like deposited onto the 1st mirror 24 is reduced and then deterioration in image quality due to deposition of the dusts or the like onto the 1st mirror 24 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus, and more particularly, to an image reading apparatus which is applied to a facsimile apparatus, a copying apparatus or the like and uses a so-called reduction optical system.

[0002]

2. Description of the Related Art A so-called reduction optical system image reading apparatus is often used for a scanner section of a facsimile machine, a general-purpose scanner, and a scanner section of a copying machine.

An image reading apparatus using such a reduction optical system generally projects light from a light source arranged below the contact glass onto an original set on the contact glass, and the light is reflected by the original. The reflected light is reflected by a plurality of mirrors on a predetermined optical path, and is a photoelectric conversion unit C through a lens.
The light enters the CD image sensor and reads the image of the document.

In such an image reading apparatus, when dust, dust, or other foreign matter (hereinafter referred to as dust) adheres to a component on the optical path, the dust or the like becomes black dots or black streaks. Appears in the image and reduces the image quality.

When dust or the like adheres to the contact glass, normally, the dust or the like adhered to the contact glass is
Although it can be easily removed by the operator, if dust or the like adheres to the parts of the reduction optical system stored under the contact glass, it is necessary to disassemble and clean the image reading device to some extent. It cannot be removed easily, which is an important maintenance issue.

Therefore, various image reading apparatuses have been proposed in which dust and the like are prevented from adhering to a place where the operator cannot easily remove them.

As such a conventional image reading apparatus,
For example, the imaging lens is protected from dust by the lens cover, and when the image reading device is not used, the imaging element is retracted from the use position to the retracted position to prevent dust and the like from adhering to the imaging lens and the imaging element. (See Japanese Patent Laid-Open No. 4-156165).

Further, conventionally, in a color image reading apparatus, a solid-state image pickup device (CCD) and a light splitting member (prism).
There is a device in which a dustproof member is closely contacted between and to prevent dust and the like from adhering to the CCD and the prism (see JP-A-1-125165).

Further, conventionally, an elastic member having a high light-shielding property is interposed between the prism and the CCD, and the prism and the CC
There is one in which dust and the like are prevented from adhering to D and the contrast is improved by blocking light (JP-A-62-98).
858).

[0010]

However, in any of the conventional image reading apparatuses as described above, the construction is such that dust and the like are prevented from adhering to the image pickup element, the lens, and the prism in any of them. Although it is possible to prevent dust and the like from adhering to the parts, in the image reading apparatus using the reduction optical system, the parts that attach the dust and the like and deteriorate the image quality are not limited to the image sensor, the lens and the prism. However, dust or the like adheres to the mirror arranged on the optical path.

That is, as shown in FIG. 9, the reduction optical system 1 of the image reading apparatus irradiates the original 4 on the contact glass 3 with light from the light source 2 and reflects the original 4 reflected by the original 4. The light is reflected by the first mirror 5, the second mirror 6, and the third mirror 7, passes through the shading correction slit 8 and then enters the lens 9, and the light entering the lens 9 is imaged on the CCD 10. Then, the CCD 10 performs photoelectric conversion.

The reflected light reflected by the original 4 is the CCD 1
As a result of an experiment conducted by the applicant of the present application, the first mirror 5 whose reflection surface is inclined obliquely upward is the one to which dust and the like are most likely to be attached on the optical path until it reaches 0. It has been found.

That is, dust or the like floating in the image reading device adheres to and accumulates on the first mirror 5 for a long time to scatter incident light to deteriorate the image quality of the image reading device. .

In particular, when the reduction optical system 1 is used in a facsimile machine, image data of black spots and black streaks due to the dust and dust is transmitted by facsimile communication, so that the amount of image data increases accordingly. Communication charges are high.

In order to remove dust and the like adhering to the first mirror 5, it is necessary to disassemble the image reading device to some extent, which cannot be easily done by the operator, and a solution thereof is demanded for maintenance. .

Therefore, according to the present invention, by arranging a suction member near which the floating dust or the like is likely to adhere, the dust or the like can be reduced to prevent the deterioration of the image quality. It is an object of the present invention to provide an image reading device capable of performing the above.

[0017]

According to another aspect of the present invention, there is provided an image reading apparatus, in which reflected light from an original is sequentially reflected by a plurality of mirrors, passes through a predetermined optical path, and is introduced into a photoelectric conversion means. In an image reading apparatus for reading an image of an original, at least one of the plurality of mirrors is arranged tilted upward by a predetermined angle from the vertical direction and below the mirror tilted upward. In addition, the above-mentioned object is achieved by disposing an adsorption member having a predetermined adhesive property at a position that does not block the optical path.

Generally, in the image reading apparatus, the reflected light from the original set on the contact glass is reflected by a plurality of mirrors arranged below the contact glass and introduced into the photoelectric conversion means. Normally, the mirror that first receives the reflected light reflected from the original through the contact glass is arranged so as to incline upward by a predetermined angle from the vertical direction, and the mirror arranged so as to incline upward. In addition, dust or the like adheres and accumulates over a long time, diffusely reflects light, and deteriorates image quality.

However, in the present invention, since the adsorbing member having the adhesive property is disposed below the inclined mirror at a position where it does not block the optical path, dust or the like floating near the mirror is prevented. Further, it is possible to reduce dust and the like adhering to the mirror that is adsorbed by the adsorbing member, and it is possible to improve image quality.

In the image reading apparatus according to the second aspect of the present invention, the reflected light from the original is sequentially reflected by a plurality of mirrors and passed through a predetermined optical path, and is introduced into the photoelectric conversion means to read the image of the original. In the reading device, at least one of the plurality of mirrors is tilted upward from the vertical direction by a predetermined angle, and is below the mirror tilted upward, and the optical path is The above-mentioned object is achieved by disposing an adsorption member having a predetermined conductivity at a position where it does not block.

That is, dust or the like floating in the image reading apparatus is generally weakly charged, and when such charged dust or the like floats near the inclined mirror, it has a predetermined conductivity. Since the attracting member, for example, the metal member has the conductivity, the charged dust or the like can be attracted and adsorbed to reduce the dust or the like adhering to the mirror, thereby improving the image quality. it can.

In this case, for example, as described in claim 3, the suction member may be grounded by a predetermined ground wire.

With this arrangement, the weakly charged dust or the like can be attracted to the suction member further by the suction member held at the ground potential, and the dust and the like attached to the mirror can be further reduced. Therefore, the image quality can be further improved.

Further, for example, as described in claim 4, a member having a predetermined adhesiveness may be attached to the surface of the suction member.

In this way, weakly charged dust or the like can be attracted to the suction member and adsorbed thereto, and can be attached to the adhesive member, further reducing the dust and the like attached to the mirror. The image quality can be further improved.

In the image reading apparatus according to the present invention, the reflected light from the original is sequentially reflected by a plurality of mirrors and passed through a predetermined optical path, and is introduced into the photoelectric conversion means to read the image of the original. In the reading device, at least one of the plurality of mirrors is tilted upward from the vertical direction by a predetermined angle, and is below the mirror tilted upward, and the optical path is The above-mentioned object is achieved by disposing the adsorption member having a predetermined dielectric property at a position that does not block the above.

That is, dust or the like floating in the image reading device is generally weakly charged, and when such charged dust or the like floats near the inclined mirror, it is formed of vinyl chloride or the like. The adsorbing member having a predetermined dielectric property attracts and adsorbs dust and the like to reduce the adherence to the mirror, and the image quality can be improved.

In this case, for example, as described in claim 6, the adsorption member may be charged to a predetermined voltage.

By doing so, the weakly charged dust or the like can be further attracted to and attracted to the attracting member by the attracting member having a dielectric property and charged to a predetermined voltage, and the dust that adheres to the mirror. It is possible to further reduce the image quality and the like and further improve the image quality.

[0030]

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

The examples described below are preferred specific examples of the present invention, and therefore, various technically preferable limitations are given thereto. However, the scope of the present invention is particularly limited in the following description. The present invention is not limited to these modes unless there is a statement to limit the above.

1 and 2 are views showing a first embodiment of the image reading apparatus of the present invention.

FIG. 1 is an overall schematic configuration diagram of a scanner device 20 to which a first embodiment of an image reading device of the present invention is applied.

In FIG. 1, the scanner device 20 is applied to a facsimile device, a copying device or the like, and a reduction optical system is used.

The scanner device 20 is provided with a contact glass 21 on the upper part of the main body of the scanner device 20,
The original 22 is conveyed on the contact glass 21 while contacting the contact glass 21.

Below the contact glass 21, the light source 2
3 is provided, and the light source 23 is the contact glass 2
The original 22 set on the contact glass 21 is irradiated with light through the light source 1.

Below the contact glass 21,
The first mirror 24 and the second mirror 2 which constitute the reduction optical system.
5, third mirror 26, shading correction slit 2
7, a lens 28, a CCD image sensor 29, and the like are provided, and the light reflected by the original 22 is reflected by the first mirror 24.
To the lens 28 and guides it onto the CCD image sensor 29.

The first mirror 24 is the contact glass 21.
Is arranged just below the above, and is inclined more obliquely upward than the vertical direction.
The reflected light of the light radiated on is incident. First mirror 24
Reflects this incident light toward the second mirror 25.

The second mirror 25 is disposed substantially vertically at a position facing the first mirror 24, that is, on the right side in FIG. 1, and the light incident from the first mirror 24 is directed to the third mirror 26.
Reflect in the direction.

The third mirror 26 is disposed substantially vertically below the first mirror 24 and reflects the light incident from the second mirror 25 toward the shading correction slit 27.

The shading correction slit 27 has a third
The light incident from the mirror 26 is subjected to shading correction and emitted to the lens 28, and the lens 28 reduces the incident light to the CCD image sensor 29 and irradiates it.

Below the first mirror 24, which is arranged obliquely above the vertical direction, and between the third mirror 26 and the lower part of the first mirror 24, The first mirror 24 extends in the width direction (longitudinal direction) of the first mirror 24 at least over the same length as the first mirror 24.
A plate member 30 extending over a predetermined length from the back surface side of the first mirror 24 to the front surface side (reflection surface side) of the first mirror 24 is disposed, and at least the first mirror 24 on the front surface side of the plate member 30.
The adhesive member 3 having a predetermined adhesiveness is provided on the front side portion of the
1 is attached by pasting or coating.

If the adhesive member 31 is an adhesive member capable of adsorbing dust or the like floating in the scanner device 20 and preventing the dust or the like from floating again,
Anything may be used.

Further, the plate member 30 and the adhesive member 31
Is disposed at a position where it does not block the optical path L, and in particular, the optical path L of the reflected light reflected from the first mirror 24 to the second mirror 25 and incident on the third mirror 26 from the second mirror 25. It is arranged at a position where it does not block the optical path L of the reflected light.

Therefore, the plate member 30 and the adhesive member 31 together constitute a suction member.

Next, the operation will be described.

The scanner device 20 of the present embodiment projects light from the light source 23 onto the original 22 conveyed on the contact glass 21 and inclines the light reflected by the original 22 toward the contact glass 21 rather than vertically. Incident on the first mirror 24, and the incident light is sequentially passed through the optical path L to the first mirror 24.
The light is reflected by the mirror 24, the second mirror 25, and the third mirror 26, and is incident on the lens 28 via the shading correction slit 27.

The lens 28 reduces the incident light from the shading correction slit 27 to the CCD image sensor 29 and irradiates it, and photoelectrically converts it by the CCD image sensor 29.
The image of the original 22 is read.

However, when dust or the like adheres to the component on the optical path L, the dust or the like diffusely reflects the light and appears as black spots or black streaks, which deteriorates the image quality.

Of the parts arranged on the optical path L of the scanner device 20, the second one arranged in a substantially vertical direction.
The mirror 25, the third mirror 26, the first mirror 24, which is inclined more upward than the vertical than the shading correction slit 27, the lens 28, and the like.
It has been confirmed by experiments by the applicant that dust and the like floating inside the scanner device 20 adhere to the above.

Therefore, in the scanner device 20 of the present embodiment, the plate member 30 to which the adhesive member 31 is attached is arranged below the first mirror 24, and the adhesive member 31 floats in the scanner device 20. Dust and the like are attached to reduce the attachment of the dust and the like to the first mirror 24.

That is, dust or the like floats inside the scanner device 20, and the dust or the like tries to adhere to the components on the optical path L within a long time. A component whose incident surface is arranged vertically, for example,
The second mirror 25, the third mirror 26, the lens 28, etc.,
Dust or the like is unlikely to adhere to the portion that affects the image quality, that is, the reflecting surface or the incident surface.

On the other hand, in the first mirror 24, the reflection surface of which is inclined with respect to the optical path L upward from the vertical, dust and the like are easily attached to the reflection surface, and the first mirror 24 has a long time. During this period, dust or the like that may affect the light passing through the optical path L may be attached or accumulated.

However, the scanner device 20 of this embodiment
Since the plate member 30 to which the adhesive member 31 is attached is disposed below the first mirror 24, as shown in FIG. 2, dust and the like floating near the first mirror 24 are 2 As indicated by the middle arrow, it is adsorbed on the adhesive member 31 to exert a dust collecting effect, and is prevented from floating again.

Therefore, it is possible to reduce dust and the like adhering to the reflecting surface of the first mirror 24 and improve the image quality.

FIG. 3 is a diagram showing a second embodiment of the image reading apparatus of the present invention.

The present embodiment is applied to the scanner device 20 similar to the first embodiment, and in the description of the present embodiment, the same components as those in the first embodiment have the same reference numerals. Is attached and its description is omitted.

In FIG. 3, below the first mirror 24 and between the third mirror 26 and the lower part of the first mirror 24, at least the first mirror 24 in the width direction thereof is provided.
The first mirror 2 extends over the same length as the mirror 24.
A plate member (adsorption member) 40 extending from the back surface side of the first mirror 24 to the front surface side of the first mirror 24 by a predetermined length is provided. The plate member 40 has a predetermined conductivity, for example, a member having a predetermined conductivity. , A copper plate or the like.

According to this embodiment, floating dust or the like can be adsorbed to the plate member 40 to reduce the dust or the like attached to the reflecting surface of the first mirror.

That is, dust and the like floating in the scanner device 20 are generally weakly charged,
This weakly charged dust or the like is attracted to the conductive plate member 40 by the static electricity that charges the dust or the like, as shown by the arrow in FIG.
Exerts a dust collecting effect.

Therefore, the plate member 40 not only attaches the floating dust and the like, but also attracts and attaches the dust and the like which is about to drop on the first mirror 24 due to its conductivity, so that the first mirror 24 is attached. It is possible to further reduce the adhesion of dust and the like to the image quality and further improve the image quality.

FIG. 4 is a diagram showing a third embodiment of the image reading apparatus of the present invention.

The present embodiment is applied to the scanner device 20 similar to the second embodiment, and in the description of the present embodiment, the same components as those in the second embodiment have the same reference numerals. Is attached and its description is omitted.

In FIG. 4, below the first mirror 24 and between the third mirror 26 and the lower part of the first mirror 24, at least the first mirror 24 in the width direction thereof is provided.
The first mirror 2 extends over the same length as the mirror 24.
A plate member (adsorption member) 40 extending from the back surface side of the first mirror 24 to the front surface side of the first mirror 24 by a predetermined length is provided. The plate member 40 has a predetermined conductivity, for example, a member having a predetermined conductivity. , A copper plate or the like.

The plate member 40 is grounded by being connected to a metal member or the like on the exterior of the scanner device 20 by a ground wire 41, and is held at the ground potential.

According to the present embodiment, the weakly charged floating dust or the like is grounded by the ground wire 4 as shown by the arrow in FIG.
1 attracts and adheres to the plate member 40 which is kept at the ground potential to exert a dust collecting effect.

Therefore, by holding the plate member 40 at the ground potential, not only the floating dust and the like but also the charged dust and the like that is about to fall on the first mirror 24 are attracted to the plate member 40. , Can be attached.

As a result, it is possible to further reduce the adhesion of dust and the like to the first mirror 24, and it is possible to further improve the image quality.

FIG. 5 is a diagram showing a fourth embodiment of the image reading apparatus of the present invention.

This embodiment is applied to the scanner device 20 similar to the third embodiment, and in the description of the present embodiment, the same components as those in the third embodiment have the same reference numerals. Is attached and its description is omitted.

In FIG. 5, below the first mirror 24 and between the third mirror 26 and the lower part of the first mirror 24, at least a first widthwise direction of the first mirror 24 is present.
The first mirror 2 extends over the same length as the mirror 24.
A plate member 40 extending from the back side of the first mirror 24 to the front side of the first mirror 24 by a predetermined length is provided. The plate member 40 is a member having a predetermined conductivity, such as a copper plate. It is formed of a metal member.

The plate member 40 is grounded by being connected to a metal member or the like on the exterior of the scanner device 20 by a ground wire 41, and is held at the ground potential.

Further, the plate member 40 has the first mirror 2
An adhesive member 42 having a predetermined adhesive property is attached by sticking or coating on at least a portion of the surface on the four side protruding to the front surface side of the first mirror 24.

According to this embodiment, floating dust or the like that is weakly charged is grounded by the ground wire 4 as shown by the arrow in FIG.
1 pulls it toward the plate member 40 kept at the ground potential and makes it adhere to the adhesive member 42 attached on the plate member 40 to exert a dust collecting effect.

Therefore, by holding the plate member 40 at the ground potential, not only floating dust and the like but also charged dust and the like that is about to fall on the first mirror 24,
In addition to being able to be attracted, the attracted dust or the like can be attached to the adhesive member 42 attached to the surface of the plate member 40 to prevent the dust or the like from floating again.

As a result, it is possible to further reduce the adhesion of dust and the like to the first mirror 24, and it is possible to further improve the image quality.

FIG. 6 is a diagram showing a fifth embodiment of the image reading apparatus of the present invention.

The present embodiment is applied to the scanner device 20 similar to the first embodiment, and in the description of the present embodiment, the same components as those in the first embodiment have the same reference numerals. Is attached and its description is omitted.

In FIG. 6, below the first mirror 24 and between the third mirror 26 and the lower part of the first mirror 24, at least the first mirror 24 in the width direction is provided.
The first mirror 2 extends over the same length as the mirror 24.
A plate member (adsorption member) 50 extending from the back surface side of the first mirror 24 to the front surface side of the first mirror 24 by a predetermined length is arranged. The plate member 50 has a predetermined dielectric property, for example, , Vinyl chloride, etc.

According to this embodiment, floating dust or the like can be attracted to the plate member 50 to reduce dust or the like attached to the reflecting surface of the first mirror.

That is, the dust and the like floating in the scanner device 20 are generally weakly charged,
As shown by the arrow in FIG. 6, the static electricity that charges the dust or the like attracts the dielectric plate member 50 and sticks to it, and the plate member 50 exhibits a dust collecting effect.

Therefore, the plate member 50 not only attaches the floating dust and the like, but also attracts and attaches the charged dust and the like which is about to fall on the first mirror 24 due to its dielectric property. It is possible to reduce the adhesion of dust and the like to the first mirror 24, and it is possible to further improve the image quality.

FIG. 7 is a diagram showing a sixth embodiment of the image reading apparatus of the present invention.

The present embodiment is applied to the scanner device 20 similar to the fifth embodiment, and in the description of the present embodiment, the same components as those in the fifth embodiment have the same reference numerals. Is attached and its description is omitted.

In FIG. 7, below the first mirror 24 and between the third mirror 26 and the lower part of the first mirror 24, at least the first mirror 24 in the width direction thereof is provided.
The first mirror 2 extends over the same length as the mirror 24.
A plate member (adsorption member) 50 extending from the back surface side of the first mirror 24 to the front surface side of the first mirror 24 by a predetermined length is arranged. The plate member 50 has a predetermined dielectric property, for example, , Vinyl chloride, etc.

A roller 51 is rotatably abutted on the plate member 50, and the roller 51 is connected to a rotating shaft 53a of a motor 53 by a belt 52.

The roller 51 is rotationally driven by the motor 53 while being in contact with the plate member 50 and continuously frictionally contacts with the plate member 50, so that the plate member 50 made of vinyl chloride or the like and having a dielectric property. It is formed of a member, for example, acrylic or the like, which applies static electricity to the plate member 50 to charge it to a predetermined voltage.

According to the present embodiment, the weakly charged floating dust or the like is attracted to the charged dielectric plate member 50 as shown by the arrow in FIG. Exert.

That is, when the roller 51 is in contact with the plate member 50 and is rotationally driven by the motor 53, the plate member 50 is charged with a predetermined voltage by being electrostatically imparted by the roller 51 which is rotationally driven. It

Therefore, as shown by the arrow in FIG. 7, the charged plate member 50 not only attracts the floating dust and the like, but also the charged dust that is about to fall on the first mirror 24. Etc. are also attracted and attached.

As a result, it is possible to further reduce the adhesion of dust and the like to the first mirror 24, and it is possible to further improve the image quality.

In the sixth embodiment, the motor 53 may be provided exclusively as a motor for rotationally driving the roller 51, or a motor originally provided in the scanner device 20, for example, the original 22. A motor or the like included in the scanner 20 may be used to convey the sheet.

Although the invention made by the present inventor has been specifically described based on the preferred embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say.

For example, in each of the above embodiments, the plate members 40 and 50 formed in a plate shape are used as the suction member, but the present invention is not limited to this. In short, any shape may be used as long as it can efficiently adsorb floating dust and the like.

Further, in each of the above embodiments, the original 22
Device 20 for transporting the sheet on the contact glass 12
However, the present invention is not limited to this, and the original 22 is stationary on the contact glass 12, and the reduction optical system relatively moves so that the optical path length thereof does not change, and the original 22 is scanned. However, the same can be applied.

Further, in each of the above-mentioned embodiments, the suction member is arranged only below the first mirror 24 which is arranged so as to be inclined upward. It may be similarly arranged below the.

[0097]

According to the image reading apparatus of the first aspect of the present invention, since the adsorbing member having the adhesive property is disposed below the inclined mirror and at a position not blocking the optical path, The adsorbing member adsorbs dust or the like floating near the mirror and reduces the dust or the like adhering to the mirror, thereby improving the image quality.

According to the image reading apparatus of the second aspect of the present invention, since the attracting member having conductivity is arranged below the inclined mirror and at a position not blocking the optical path,
The conductive adsorption member attracts and adsorbs the weakly charged dust or the like floating in the vicinity of the mirror to reduce the dust and the like adhering to the mirror, thereby improving the image quality.

In this case, as described in claim 3, when the adsorbing member is grounded by a predetermined ground wire, weakly charged dust or the like is further attracted by the adsorbing member held at the ground potential. It can be attracted and attracted to the suction member, further reducing the dust etc. adhering to the mirror,
The image quality can be further improved.

Further, as described in claim 4, when a member having a predetermined adhesiveness is attached to the surface of the suction member, weakly charged dust or the like is attracted to the suction member to be sucked. At the same time, it can be attached to a member having an adhesive property, dust and the like attached to the mirror can be further reduced, and the image quality can be further improved.

According to the image reading apparatus of the fifth aspect of the invention, since the attracting member having a predetermined dielectric property is disposed below the inclined mirror and at a position where it does not block the optical path, the dielectric The attractive suction member attracts and adsorbs weakly charged dust and the like floating near the mirror,
Adhesion to the mirror can be reduced and the image quality can be improved.

In this case, as described in claim 6, when the adsorption member is charged to a predetermined voltage, the weakly charged dust or the like has a dielectric property and is attracted to a predetermined voltage. By the member, it is possible to further attract and attract the attracting member to the attracting member, further reduce dust and the like adhering to the mirror, and further improve the image quality.

[Brief description of drawings]

FIG. 1 is a perspective view of a reduction optical system of a scanner device to which a first embodiment of an image reading device of the present invention is applied.

FIG. 2 is a side view of the mirror portion of FIG.

FIG. 3 is a side view of a mirror portion of a scanner device to which a second embodiment of the image reading device of the invention is applied.

FIG. 4 is a side view of a mirror portion of a scanner device to which a third embodiment of the image reading device of the invention is applied.

FIG. 5 is a side view of a mirror portion of a scanner device to which a fourth embodiment of the image reading device of the invention is applied.

FIG. 6 is a side view of a mirror portion of a scanner device to which a fifth embodiment of the image reading device of the invention is applied.

FIG. 7 is a side view of a mirror portion of a scanner device to which a sixth embodiment of the image reading device of the invention is applied.

FIG. 8 is a side view of a mirror portion of a reduction optical system of a conventional image reading device.

[Explanation of symbols]

 20 Facsimile / Copier 21 Contact Glass 22 Original 23 Light Source 24 First Mirror 25 Second Mirror 26 Third Mirror 27 Shading Correction Slit 28 Lens 29 CCD Image Sensor 30, 40, 50 Plate Member 31, 42 Adhesive Member 41 Ground Wire 51 Roller 52 Belt 53 Motor 53a Rotating shaft

Claims (6)

[Claims] 1. An image reading apparatus for sequentially reading reflected light from a document by a plurality of mirrors, passing the light on a predetermined optical path, introducing the light into a photoelectric conversion means, and reading an image of the document. , At least a predetermined angle from the vertical direction is arranged so as to be inclined upward, below the mirror arranged so as to be inclined upward, and at a position that does not block the optical path, a predetermined adhesiveness An image reading apparatus, in which an adsorption member having the above is arranged. 2. An image reading apparatus for sequentially reading reflected light from an original by a plurality of mirrors, passing the light on a predetermined optical path, introducing the light into a photoelectric conversion means, and reading an image of the original. , At least a predetermined electrical conductivity from the vertical direction is provided above the mirror, which is provided at an angle upward from the vertical direction, and which has a predetermined electrical conductivity at a position not blocking the optical path. An image reading apparatus, in which an adsorption member having the above is arranged. 3. The image reading apparatus according to claim 2, wherein the suction member is grounded by a predetermined ground wire. 4. The image reading apparatus according to claim 2, wherein the suction member is provided with a member having a predetermined adhesiveness on the surface thereof. 5. An image reading apparatus for sequentially reading reflected light from an original by a plurality of mirrors, passing the light on a predetermined optical path, introducing the light into a photoelectric conversion means, and reading an image of the original. , At least at a predetermined angle upward from the vertical direction, below the mirrors inclined upward, and at a position not blocking the optical path, a predetermined dielectric property An image reading apparatus, in which an adsorption member having the above is arranged. 6. The adsorption member is charged to a predetermined voltage.
The image reading device according to claim 1.