JP2897690B2 - Image sensor device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image sensor device, and more particularly, to a contact type image sensor device for reading a document by bringing the document into close contact with a reading surface.

[0002]

2. Description of the Related Art In an image sensor device of this type, when a large amount of originals are read, the original ink adheres to the reading section when the originals are read, and the originals become dirty. It has been pointed out that a line such as a black streak or a black band that does not exist is erroneously read.

[0003] A technique for remedying this inconvenience is disclosed, for example, in JP-A-62-262563. The publication describes an image sensor main body, a transparent protective layer laminated on a document reading section of the image sensor main body, and a document that is disposed to face the transparent protective layer and conveys the document along the transparent protective layer. And a roller to be driven. Further, the transparent protective layer is provided with a groove at a contact position with the roller in parallel with the rotation axis of the roller. Typically,
The transparent protective layer as the document reading surface is formed of flat glass so that the document can be moved smoothly. Further, the groove portion here is a fine one having a depth of about 10 [μm].

When reading a document, the document is conveyed while being pressed against the groove by a roller. At this time, since the roller and the peripheral portion of the groove come into contact with each other, the document is not directly pressed against the bottom of the groove serving as the reading unit. Therefore, the problem that the ink of the document adheres to the reading unit is improved. I have.

[0005]

However, in the above-mentioned conventional example, there is a disadvantage that dust accumulates on the bottom of the groove serving as the reading portion, and the document reading performance is also deteriorated. In addition, since the original is sandwiched between the roller and the corner of the groove when the original is transported, there is a disadvantage that the ink shaved at the corner of the groove accumulates in the groove and the original reading performance is further deteriorated.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide an image sensor device which solves the above-mentioned disadvantages of the prior art, and in particular, which prevents the original reading portion from being stained by ink or dust.

[0007]

According to the first aspect of the present invention, a flat transparent glass is provided on an information reading surface, information reading means is provided inside, and information written on a sheet inserted from the outside can be used as information. In the image sensor device having a structure of reading by the reading means, a uniform convex structure having a predetermined width is provided on the information reading surface, and a concave groove is provided on the reading surface of the document insertion side in parallel with the convex structure, and along the paper on the information reading surface Ru provided original transporting rollers for transporting from the side of the groove as described above on the side of the convex structure. And the information mentioned above
The uniform convex structure of the information reading surface is
Micro glass mounted on transparent glass
That, we have adopted a technique called.

According to the second aspect of the present invention, the information reading surface is flat.
Equipped with flat transparent glass, with information reading means inside
Information on the paper inserted from outside.
Image sensor device with a structure to read by the information reading means
The information reading surface described above, an
In addition to providing such a convex structure, inserting the original on the reading surface described above
On the side, a concave groove is provided in parallel with the aforementioned convex structure. I mentioned earlier
The paper is protruded from the side of the above-mentioned groove along the information reading surface.
And a document transport roller for transporting the document. Further, the raw <br/> draft conveying rollers, that set <br/> only at a position opposed to the convex structure described above. Further, the above-mentioned uniform convex structure of the information reading surface is
Flat transparent glass and microphone attached to this transparent glass
It is composed of glass . Then, the hand that, provided the original conveying roller described above, the position opposed to the convex structure
Has adopted the law .

According to the third aspect of the present invention, the information reading surface is flat.
Equipped with flat transparent glass, with information reading means inside
Information provided on externally inserted paper.
Image sensor device with a structure to read by
In addition, a uniform convex structure having a predetermined width is formed on the information reading surface.
And the convex structure is provided on the original insertion side of the reading surface.
A groove is provided in parallel with. Also, place the above-mentioned paper on the information reading surface
The original to be conveyed from the groove side to the convex structure side
A paper transport roller is provided . And the convex structure of the information reading surface
And a groove parallel to it with flat transparent glass and a predetermined width
Constituted by a micro-glass, it adopts a method called.

In the invention according to claim 4, the information reading surface
Equipped with flat transparent glass inside and information reading means inside
Information provided on a sheet equipped with
Structure image sensor instrumentation of reading the at information reading means
The information reading surface has a uniform convex structure with a predetermined width.
In addition to the above, the above-mentioned convex
A groove is provided parallel to the structure. Also, read the information
Convey along the cut surface from the concave groove side to the convex structure side
Document feed rollers, and the original feed rollers
The chromatography La, Ru provided at a position opposed to the convex structure described above. Soshi
Te, adopts a technique of the convex structure and parallel grooves to the information reading surface as described above, constitutes a the micro glass flat transparent glass and a predetermined width.

[0011] more to this, it is intended to achieve the objectives described above.

[0012]

[Action]the aboveAccording to the first aspect of the present invention, the document is read information.
When the document is transported over the surface, first the ink surface of the original is
At this time, the corner of the groove and the ink surface
Contact with the excess ink (toner powder that could not be fixed)
Etc.) are cut off inside the groove. Next,
The document is transported, and the ink surface conforms to the convex structure of the information reading surface.
Then, the corner of the convex structure comes into contact with the ink surface, and
Ku is torn off. And it was stripped off with a convex structure
The ink collects at the foot of the convex structure.And flat
Micro glass of a specified width on transparent glass
Thus, a convex structure is formed.

[0013] In the invention of claim 2, wherein, when the document by action of the document feed roller is conveyed through the information reading surface above, firstly, the ink surface of the original is Sashikakari the groove, this time, the groove The cut corners come into contact with the ink surface, and a part of excess ink (such as toner powder that has not been completely fixed) is dropped into the concave groove. Next, when the document transport roller further rotates and the document is transported, and the ink surface reaches between the convex structure of the information reading surface and the document transport roller, the corner of the convex structure contacts the ink surface, and Ink is stripped off. At this time, the ink scraped off by the convex structure gathers at the foot of the convex structure. Further, the ink which cannot be removed by these and adheres to the convex structure portion after passing through the document (after completion of the document reading operation) is wiped off by the idle rotation of the document conveying roller thereafter. At this time,
Since the convex structure which is in pressure contact with the document transport roller is formed, the pressing force of the document transport roller is applied intensively to the convex structure portion. Then, a predetermined width on flat transparent glass
A convex structure is formed by attaching micro glass
It is.

According to the third aspect of the invention, when the document is conveyed on the information reading surface, first, the ink surface of the document reaches the concave groove, and at this time, the corner cut by the concave groove and the ink surface When the ink comes into contact, a part of the excess ink (toner powder not fixed, etc.) is dropped into the inside of the concave groove. Next, when the document is further conveyed and the ink surface approaches the convex structure of the information reading surface, the corner of the convex structure contacts the ink surface, and the ink is further removed. Further , the ink that has been scraped off by the convex structure collects at the foot of the convex structure. Then, by mounting micro glass having a predetermined width on the flat transparent glass , a convex structure and a concave groove parallel to the convex structure are formed.

According to the fourth aspect of the present invention, when a document is conveyed on the information reading surface by the action of the document conveying roller, first, the ink surface of the document reaches the concave groove, and at this time, the concave groove is cut. The corners come into contact with the ink surface, and a part of the excess ink (toner powder or the like that has not been fixed completely) is dropped into the concave groove. Next, when the document transport roller further rotates and the document is transported, and the ink surface reaches between the convex structure of the information reading surface and the document transport roller, the corner of the convex structure contacts the ink surface, and Ink is stripped off. At this time, the ink scraped off by the convex structure gathers at the foot of the convex structure. Also, they cannot be removed by these,
The ink remaining on the convex structure after the document has passed (after the document reading operation is completed) is wiped off by the idle rotation of the document transport roller thereafter. At this time, since the convex structure which is in pressure contact with the document transport roller is formed, the pressing force of the document transport roller is intensively applied to the convex structure portion. Then, by mounting micro glass having a predetermined width on the flat transparent glass , a convex structure and a concave groove parallel to the convex structure are formed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

The image sensor device shown in FIG. 1 is provided with a flat transparent glass 2 on an information reading surface 1 and information reading means 3 inside the device. The information reading means 3 reads information described on a sheet (document) P inserted from the outside.
Among them, a uniform convex structure 4 having a predetermined width is formed on the information reading surface 1. On the document insertion side (right side in FIG. 1) of the information reading surface 1, a concave groove 5 is formed in parallel with the convex structure 4.
Is provided. Further, in the present embodiment, a document conveying roller 6 is provided on the convex structure 4 portion of the information reading surface 1.

More specifically, in this embodiment, the information reading surface 1 forms the upper surface of the housing 10. The information reading means 3 provided in the housing 10 includes an LED light source 3A for irradiating light for document reading, a lens array 3B to which reflected light from the document is input, and a light passing through the lens array. And a light receiving element 3C for receiving light. The light receiving element 3C is mounted on a circuit board 7 that converts input light to the light receiving element 3C into a predetermined electric signal.
Equipped on the bottom. Here, the casing 10 has a vertical cross-sectional area of about 200 [mm ² ], and the width (the depth direction in FIG. 1) is set according to the sheet width used for reading.

The uniform convex structure 4 in the information reading surface 1 and the concave groove 5 parallel to the same have a flat transparent glass 2 and a plurality of micro-glasses M, M of a predetermined width mounted on the transparent glass 2. , M. That is, the transparent glass 2 and the plurality of microglasses M, M, M are laminated to form a convex structure and a concave groove. The height of the convex structure and the depth of the concave groove are each set to about 10 [μm]. The width of the convex structure portion and the concave groove is 5
It is 0 [μm] to 100 [μm] or more. Here, the convex structure and the concave groove may be configured by cutting a single transparent glass, regardless of this.

The document conveying roller 6 is pressed against the convex structure 4. The document conveying roller 6 has a surface formed of a relatively hard felt material.

Next, the overall operation of this embodiment will be described with reference to FIG.

When the original P is inserted from the direction of arrow A and the original P is transported on the information reading surface 1 by the action of the original transport roller 6, first, the ink surface I of the original P reaches the concave groove 5, At this time, the corner K that cuts the concave groove 5 comes into contact with the ink surface I, and a part of excess ink (toner powder or the like that has not been completely fixed) is dropped into the concave groove 5. next,
When the document transport roller 6 further rotates and the document P is transported, and the ink surface I reaches between the convex structure 4 of the information reading surface 1 and the document transport roller 6, the angle T of the convex structure 4 and the ink surface I comes into contact and the ink is further stripped off. At this time, the ink scraped off by the convex structure 4
Gather at the foot of.

Further, the ink which cannot be removed by these and adheres to the convex structure 4 after passing through the document P (after completion of the document reading operation) is rotated by the document conveying roller 6 after which the idle rotation occurs. Wipe off. At this time, since the convex structure 4 that is in pressure contact with the document conveying roller 6 was formed,
The pressing force of the document conveying roller 6 is intensively applied to the convex structure 4.

As described above, according to the present embodiment, since the groove is formed immediately before the reading position in the document insertion direction, when the ink or the like is excessively attached to the document, the ink contacts the corner of the groove. By doing so, it is possible to remove the excess ink and the like, and it is possible to suppress the occurrence of a situation in which the excess ink and the like adhere to the reading position (the top surface of the convex structure) and the stain causes the reading failure. Further, since the convex structure is provided at the reading position, excess ink can be removed at the corners of the convex structure, and stains on the read portion can be more effectively suppressed.

Further, since the document conveying roller is provided corresponding to the convex structure portion, the ink can be more effectively removed from the convex structure portion by the pressing force of the document conveying roller, and the original document can be removed. Even if ink or dust adheres to the reading position after reading, the ink or dust at the reading position can be removed by idle rotation of the document conveying roller.

Further, since the convex structure and the concave groove can be formed by mounting micro glass on the transparent glass, there is an advantage that the convex structure and the concave groove can be easily formed as compared with the case where the glass is cut.

In addition, since the surface of the document conveying roller is made of a relatively hard felt material, the effect of cleaning the reading position is high, and the inconvenience that the reading position is damaged is also improved.

Here, regardless of the present embodiment, a plurality of concave grooves parallel to the convex structure may be provided. Except for the reading position, a sheet material having a high friction coefficient such as a felt material may be attached to the information reading surface. Information reading means 3 inside housing 10
Employs a reduction optical system including a light source 13A provided on the bottom side of the housing 10, a lens array 13B including a mirror 14 and a lens 15, and a light receiving element 13C, as shown in FIG. It may be.

[0029]

The present invention is constructed and functions as described above. According to this, since the concave groove is formed immediately before the reading position in the original inserting direction, if the ink or the like is excessively attached to the original, When the ink comes into contact with the corners of the groove, the excess ink or the like can be wiped off, and excessive ink or the like adheres to the reading position (the top surface of the convex structure), causing a reading error due to the contamination. Generation can be suppressed. In addition, since the convex structure is provided at the reading position, excess ink can be removed at the corners of the convex structure,
It is possible to provide an unprecedented excellent image sensor device capable of more effectively suppressing the contamination of the reading portion.

Further , in the case where the document transport roller is provided corresponding to the convex structure portion, in addition to the above-described effects, it is possible to further effectively remove the ink from the convex structure portion by the pressing force of the document transport roller. In addition to this, even when ink or dust adheres to the reading position after reading the document, the ink or dust at the reading position can be removed by idle rotation of the document conveying roller.

Further , when the convex structure and the concave groove are formed by mounting micro glass on transparent glass,
Yes it is easily formed as compared with the case of cutting the glass
It works .

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal cross-sectional view partially showing a configuration of an embodiment of the present invention;

FIG. 2 is a schematic configuration diagram of an information reading unit in the embodiment shown in FIG.

FIG. 3 is an explanatory diagram for explaining the overall operation of the embodiment shown in FIG. 1;

[Description of Signs] 1 Information reading surface 2 Transparent glass 3 Information reading means 4 Convex structure 5 Concave groove 6 Document transport roller M Micro glass P

Claims (4)

(57) [Claims] 1. An image sensor device having a structure in which a flat transparent glass is provided on an information reading surface, information reading means is provided inside, and information written on a sheet inserted from outside is read by the information reading means. A uniform convex structure having a predetermined width is provided on the information reading surface, and a concave groove is provided on the document insertion side of the reading surface in parallel with the convex structure, and the sheet is formed along the information reading surface. A document transport roller for transporting from the side of the concave groove to the side of the convex structure is provided , and the uniform convex structure of the information reading surface is formed by a flat transparent glass.
And the micro glass attached to this transparent glass.
Image sensor device, characterized in that the arrangement Ri. 2. The information reading surface is provided with flat transparent glass.
Is equipped with an information reading means inside and can be inserted from outside.
Information on the paper to be read by the information reading means.
In the image sensor device having a trimming structure, a uniform convex structure having a predetermined width is provided on the information reading surface.
And the convex structure is flat on the original insertion side of the reading surface.
A groove is provided in a row, and the sheet is moved forward along the information reading surface from the side of the groove.
When a document transport roller that transports paper is provided on the side of the convex structure,
To, the original transporting rollers, arranged at a position opposed to the convex structure, a uniform convex structure of the information reading surface, a flat transparent glass
And the micro glass attached to this transparent glass.
Features and to Louis Mejisensa apparatus by being configured Ri. 3. An information reading surface is provided with a flat transparent glass.
Is equipped with an information reading means inside and can be inserted from outside.
Information on the paper to be read by the information reading means.
In the image sensor device having a trimming structure, a uniform convex structure having a predetermined width is provided on the information reading surface.
And the convex structure is flat on the original insertion side of the reading surface.
A groove is provided in a row, and the sheet is moved forward along the information reading surface from the side of the groove.
An original transport roller for transporting the document on the side of the convex structure is provided, and the convex structure on the information reading surface and the concave groove parallel to the convex structure are made of flat transparent glass and micro glass of a predetermined width. Louis Mejisensa apparatus. 4. An information reading surface is provided with a flat transparent glass.
Is equipped with an information reading means inside and can be inserted from outside.
Information on the paper to be read by the information reading means.
In the image sensor device having a trimming structure, a uniform convex structure having a predetermined width is provided on the information reading surface.
And the convex structure is flat on the original insertion side of the reading surface.
A groove is provided in a row, and the sheet is moved forward along the information reading surface from the side of the groove.
When a document transport roller that transports paper is provided on the side of the convex structure,
Then, place the document transport roller at a position facing the convex structure.
Provided, the information reading surface of the convex structure and features and to Louis Mejisensa device that parallel grooves in which was constituted by a micro glass flat transparent glass and a predetermined width.