CN204229507U - Lid component, image sensor cell, image read-out and sheet paper identification device - Google Patents

Abstract

The utility model provides a kind of lid component, image sensor cell, image read-out and the sheet paper identification device that can improve the precision of the depth of parallelism of main scanning direction.The feature of lid component (40) of the present utility model is, this lid component (40) comprising: through component (55), and it is formed along main scanning direction and supplies the light transmission from light source portion (20) outgoing; And frame component (41), it is for keeping through component (55); Frame component (41) comprising: long margin frame portion (42a, 42b), and it is formed along main scanning direction; And teat (48), its madial wall from long margin frame portion (42a, 42b) (47) is given prominence to towards the outer peripheral face (57) through component (55); Utilize the inner peripheral surface (vertical guide 48a) being filled in teat (48) to combine with the bonding agent between the outer peripheral face (57) through component (55) when not contacting with each other through component (55) and frame component (41).

Description

Cover member, image sensor unit, image reading device, and sheet recognition device

technical field

The utility model relates to a cover member, an image sensor unit, an image reading device and a paper identification device.

Background technique

There is known an image sensor unit including a light source, a case for accommodating the light source, a cover member covering the case, and the like. Patent Document 1 discloses a cover disposed so as to abut against and surround a permeable body with a plurality of protrusions. The cap of Patent Document 1 is manufactured by filling the gap between the transmissive body and the cap excluding the protrusions with an adhesive in a state where the transparent body and the cap are pressed against the reference table by a compression jig.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2010-268131

Utility model content

Problems to be solved by the utility model

However, in the manufacturing method of Patent Document 1, when the transparent body and the cover are pressed against the reference table using the compression jig, the two sides of the cover act to sandwich the transparent body and the cover by using the tapered portions formed on both sides of the compression jig. body that force. Therefore, there is a problem that the center of the cover in the main scanning direction is bent toward the transmissive body side, and the accuracy of the parallelism of the cover along the main scanning direction is lowered. When the accuracy of the parallelism of the cover along the main scanning direction is low, the conveyed object to be illuminated may be caught on the cover or a paper jam may occur.

This invention was made in view of the above-mentioned problem, and it aims at improving the precision of the parallelism of the main scanning direction of a cover member.

solutions to problems

The cover member of the present invention is used in an image sensor unit, and the image sensor unit includes: a light source part for emitting linear light along the main scanning direction to a transported object to be illuminated; The cover member is formed along the main scanning direction and is used to accommodate the light source part, and the cover member covers the housing part from the side of the illuminated body, and is characterized in that the cover member includes: a transparent member along the main scanning direction forming and transmitting light emitted from the light source portion; and a frame member for holding the transmission member, the frame member including: a long frame portion formed along the main scanning direction; and a protruding portion, It protrudes from the inner side wall of the long frame portion toward the outer peripheral surface of the permeable member, and the permeable member and the frame member fill at least the inner peripheral surface of the protruding portion without contacting each other. Combined with the adhesive between the outer peripheral surfaces of the permeable member.

According to the cover member described above, it is preferable that the frame member includes a first stepped portion formed between the protruding portion and the inner side wall, the horizontal plane of the first stepped portion and the transparent The surface of the pass member on the side of the housing part is located closer to the side of the illuminated body.

According to the above cover member, it is preferable that the frame member includes a second stepped portion formed between the first stepped portion and the inner side wall, and the horizontal plane of the second stepped portion is the same as the second stepped portion. The surface of the transmission member on the side of the housing part is located closer to the illuminated object side.

According to the above cover member, it is preferable that an inclined portion is formed between the surface of the frame member on the side of the object to be illuminated and the protruding portion.

According to the above-mentioned cover member, it is preferable that a light shielding portion for shielding light from the light source portion is provided on at least a side of the adhesive agent close to the case portion.

According to the above cover member, it is preferable that the light-shielding portion is a resin, paint, or ink that has light-shielding properties and is formed on a side of the adhesive that is closer to the case portion.

According to the above-mentioned cover member, it is preferable that the adhesive agent has a light-shielding property with respect to light from the light source unit.

The image sensor unit of the present invention includes: a light source part, which is used to emit linear light along the main scanning direction to the transported object to be illuminated; a casing part, which is formed along the main scanning direction and is used to accommodate the a light source unit; and a cover member covering the casing unit from the side of the illuminated body, wherein the cover member includes: a transmission member formed along the main scanning direction and supplied from the light source unit and a frame member for holding the transmission member, the frame member including: a long frame portion formed along the main scanning direction; and a protruding portion formed from the long frame portion The inner side wall protrudes toward the outer peripheral surface of the permeable member, and the permeable member and the frame member fill at least the inner peripheral surface of the protruding portion and the outer periphery of the permeable member without contacting each other. The adhesive between the surfaces binds together.

An image reading device according to the present invention is characterized in that the image reading device includes: the image sensor unit described above; and a transport unit that transports the illuminated object relative to the image sensor unit.

The paper identification device of the present invention is characterized in that the paper identification device includes: the image sensor unit described above; a transport unit for transporting the paper as the illuminated body; a storage unit for storing reference data of the reference of the sheet; and a comparison unit for identifying the sheet by comparing the image information read by the image sensor unit with the reference data stored in the storage unit.

The effect of utility model

According to the present invention, the accuracy of parallelism in the main scanning direction of the cover member can be improved.

Description of drawings

FIG. 1 is a cross-sectional view showing the configuration of main parts of an image reading device.

FIG. 2 is a perspective view showing the configuration of main parts of the image reading device.

FIG. 3 is an exploded perspective view of an image sensor unit.

Fig. 4 is an exploded perspective view of a cover member viewed from the back side.

5A is a cross-sectional view illustrating a method of manufacturing the lid member according to the first embodiment.

Fig. 5B is a cross-sectional view illustrating a method of manufacturing the cover member.

5C is a cross-sectional view for explaining a method of manufacturing the cover member.

Fig. 5D is a cross-sectional view illustrating a method of manufacturing the cover member.

FIG. 5E is a cross-sectional view illustrating a method of manufacturing the cover member.

Fig. 6 is a cross-sectional view illustrating a method of manufacturing the cover member according to the second embodiment.

Fig. 7 is a partially cutaway perspective view of a cover member according to a third embodiment.

Detailed ways

Hereinafter, preferred embodiments of the image sensor unit and the image reading device of the present invention will be described based on the drawings. In the following description, each three-dimensional direction is indicated by each arrow of X, Y, and Z. The X direction is the main scanning direction, the Y direction is the sub-scanning direction at right angles to the main scanning direction, and the Z direction is the vertical direction (vertical direction).

(first embodiment)

The image reading device 100 of the present embodiment functions as a paper sheet recognition device for authenticating paper sheets such as banknotes and securities.

FIG. 1 is a cross-sectional view showing the configuration of main parts of an image reading device 100 including an image sensor unit 10 according to the present embodiment. FIG. 2 is a perspective view showing the configuration of main parts of the image reading device 100 . Here, the overall structure of these devices will first be briefly described. In this embodiment, banknotes S are typically used as the object to be illuminated. In addition, the present invention is not limited to the banknote S, and can be applied to other objects.

In the predetermined part of the image reading device 100, the conveying rollers 101A, 101B and the conveying rollers 101A, 101B, which are conveying parts for conveying the bills S while holding them, are arranged in pairs at predetermined intervals in the conveying direction F of the bills S. Conveying rollers 102A, 102B. These transport rollers 101A, 101B and 102A, 102B are driven to rotate by a drive mechanism, and the banknote S is transported in the transport direction F at a predetermined transport speed relative to the image sensor unit 10 .

The image sensor unit 10 is disposed between the conveyance rollers 101A, 101B and the conveyance rollers 102A, 102B. The image sensor unit 10 of the present embodiment is provided so as to be sandwiched between adjacent members 103 and 104 arranged on the upstream side and the downstream side in the conveyance direction (sub-scanning direction), respectively. The image sensor unit 10 emits light to the conveyed banknote S, and reads the image information of the reflected light from the banknote S.

In addition, a comparison unit 105 is connected to the image sensor unit 10 . The comparing section 105 acquires image information read by the image sensor unit 10 . Moreover, the comparison part 105 reads out the reference data memorize|stored in the storage part 106, compares it with the acquired image information, and recognizes the authenticity of the banknote S.

Next, the configuration of the image sensor unit 10 will be described. FIG. 3 is an exploded perspective view of the image sensor unit 10 . The image sensor unit 10 is substantially formed in a rectangular parallelepiped, the longitudinal direction thereof is the main scanning direction, and the sub-scanning direction perpendicular thereto is the transport direction F of the banknote S.

The image sensor unit 10 includes a frame 11 , a light source portion 20 , a light collector 30 , a sensor substrate 35 , an image sensor 37 , a cover member 40 , and the like. These constituent members are formed to have a length corresponding to the width dimension of the banknote S to be read in the main scanning direction. In addition, the frame 11, the light source part 20, and the cover member 40 among these structural members function as a lighting device.

The frame 11 is a housing portion in which a space is formed for accommodating each constituent member of the image sensor unit 10 . The frame 11 is formed in a substantially rectangular parallelepiped that is long along the main scanning direction, and has an open upper side. The inside of the frame 11 is formed in a concavo-convex shape so that the light source unit 20, the sensor substrate 35, and the like can be supported at predetermined positions. For the frame 11, a resin material such as polycarbonate can be applied.

The light source part 20 emits the linear light along the main scanning direction with respect to the banknote S conveyed. The light source unit 20 includes a light source 21 and a light guide 25 . As the light source 21, an LED module 23 in which an LED chip 22 is arranged as a light emitting element is used. Here, the plurality of LED chips 22 are arranged on the surface of the LED module 23 in a state sealed with a transparent resin. As the plurality of LED chips 22 , for example, LED chips emitting light emission wavelengths of red, green, blue, infrared light, and ultraviolet light can be applied. Invisible light such as infrared light and ultraviolet light is emitted to read the image of the banknote S printed with invisible ink.

The light guide body 25 emits the light from the light source 21 toward the banknote S. The light guide 25 is made of, for example, an acrylic transparent resin material, and is formed in a rod shape long in the main scanning direction. An incident surface 26 is formed at one end portion of the light guide 25 in the longitudinal direction. The incident surface 26 is perpendicular to the main scanning direction and receives light from the light source 21 . In addition, on the surface of the light guide body 25 that faces the banknote S, an emission surface 27 that emits light incident on the light guide body 25 toward the banknote S is formed. In addition, a reflective surface 28 is formed on the surface of the light guide body 25 opposite to the exit surface 27, and the reflection surface 28 propagates the light incident from the incident surface 26 in the longitudinal direction of the light guide body 25 to the exit surface 27 side. reflection.

The light collector 30 is an optical member for imaging reflected light from the banknote S on the image sensor 37 . As the condenser 30 , a lenticular lens array in which, for example, a plurality of imaging elements (lenticular lenses) of the erect equal magnification type are arranged linearly in the main scanning direction can be applied. In addition, the light collector 30 is not limited to the above configuration as long as it can be imaged on the image sensor 37 . As the light concentrator 30 , conventionally known optical members having various light converging functions, such as various microlens arrays, can be applied.

The sensor substrate 35 is formed in a flat plate shape long in the main scanning direction. The mounting surface 36 of the sensor substrate 35 is perpendicular to the vertical direction. A drive circuit for making the light source 21 emit light or driving the image sensor 37 and the like are mounted on the mounting surface 36 of the sensor substrate 35 .

The image sensor 37 is mounted on the sensor substrate 35 and arranged under the light collector 30 . In the image sensor 37 , a predetermined number of image sensor ICs 38 including a plurality of photoelectric conversion elements corresponding to the reading resolution of the image sensor unit 10 are arranged linearly in the main scanning direction on the mounting surface 36 . The image sensor 37 receives the light which imaged the reflected light from the banknote S by the light collector 30, and converts it into an electric signal. In addition, the image sensor 37 should just be a structure which can convert the reflected light from the banknote S into an electrical signal, and is not formed in the said structure. Various conventionally known image sensor ICs can be applied to the image sensor IC 38 .

The cover member 40 prevents dust from entering the frame 11 by covering the opening of the frame 11 from the upper side (the banknote S side). The cover member 40 is formed in a flat plate shape long in the main scanning direction. As shown in FIG. 1, the surface which faces the banknote S in the cover member 40 is a conveyance surface (surface). The cover member 40 of the present embodiment is configured to improve the accuracy of the parallelism in the main scanning direction. The structure and manufacturing method of the cover member 40 of this embodiment will be described later.

Next, the basic operation of the image sensor unit 10 configured as described above will be described. The LED chips 22 of the light source 21 are sequentially turned on and driven to each of the banknotes S conveyed in the conveying direction F by the conveying rollers 101A, 101B, 102A, 102B at a predetermined conveying speed. The light emitted from the LED chip 22 enters the light guide body 25 from each incident surface 26 . The incident light is directed to the reading position O of the banknote S from the emission surface 27 of the light guide body 25 as indicated by an arrow L1 typically shown in FIG. 1 , and is emitted. Therefore, the lower surface of the banknote S is uniformly irradiated with linear light over the entire main scanning direction.

The irradiated light is reflected by the banknote S, and is imaged on the image sensor 37 via the condenser 30 . The imaged reflected light is converted into an electrical signal by the image sensor 37 and then processed in a signal processing unit (not shown).

In this way, the reading operation for one scanning line in the main scanning direction of the banknote S is completed by reading the reflected light of all the LED chips 22 for one scanning line. After the reading operation for one scanning line is completed, the reading operation for the next scanning line is performed in the same manner as described above as the banknote S moves in the sub-scanning direction. By repeating the reading operation for one scanning line at a time while transporting the banknote S in the transport direction F in this way, the entire surface of the banknote S is sequentially scanned and image information is read by reflected light.

Next, the detailed structure of the cover member 40 will be described.

The cover member 40 of the present embodiment includes a frame member 41 and a transmission member 55 through which light emitted from the light source unit 20 toward the banknote S passes.

As shown in FIG. 3 , the frame member 41 is elongated in the main scanning direction in a flat plate shape, and is formed of a square frame composed of long frame portions 42a, 42b and short frame portions 43a, 43b. The transmission member 55 is held in the space 44 surrounded by the long frame portions 42a, 42b and the short frame portions 43a, 43b.

The transmissive member 55 is long in the main scanning direction and has a flat plate shape, using glass, for example, so that the light emitted from the light source unit 20 toward the banknote S can be transmitted therethrough. In addition, transparent resin materials such as acrylic and polycarbonate can be used for the transmission member 55 .

As shown in FIG. 2 , a plurality of convex fitting portions 45 protruding toward the adjacent members 103 , 104 are formed on the side edges of the long frame portions 42 a , 42 b of the present embodiment. The respective fitting portions 45 are formed at intervals along the sub-scanning direction. Each fitting portion 45 is fitted into a plurality of concave fitted portions 107 formed on adjacent members 103 , 104 , whereby the image sensor unit 10 is positioned within the image reading device 100 via the frame member 41 .

Here, if the long frame portions 42a and 42b of the frame member 41 are not formed parallel to the main scanning direction, or part of the frame member 41 is bent toward the transmissive member 55 side, and the accuracy of the parallelism is low, the A gap is created between the frame member 41 and the adjacent components 103 , 104 . Therefore, the front end of the banknote S being conveyed may be caught in the gap, and a paper jam may occur. Therefore, a method of manufacturing the cover member 40 capable of improving the accuracy of the parallelism along the main scanning direction of the long frame portions 42 a and 42 b of the frame member 41 will be described below.

FIG. 4 is an exploded perspective view of the cover member 40 viewed from the back side. FIGS. 5A to 5E are cross-sectional views showing respective steps of the method of manufacturing the cover member 40 , and correspond to the cross-sectional views along line II shown in FIG. 4 .

(Process 1)

As shown in FIG. 5A , an adhesive sheet 81 serving as an adhesive material is placed on the workbench 80 in advance. As the adhesive sheet 81 , an adhesive sheet having an outer shape larger than that of the cover member 40 is used. First, the frame member 41 in the cover member 40 is turned upside down, and the surface 46 (the surface on the banknote S side) of the frame member 41 is placed on the adhesive sheet 81 .

Here, as shown in FIG. 5A , the frame member 41 has a protruding portion 48 protruding from the inner side walls 47 of the long frame portions 42 a and 42 b toward the space 44 . The protruding portion 48 is formed with a vertical surface 48a and a horizontal surface 48b. The vertical surface 48a corresponds to the inner peripheral surface of the frame member 41 (projection portion 48).

In addition, an inclined portion 49 is formed between the surface 46 of the frame member 41 and the protruding portion 48 . The inclined portion 49 is inclined in a direction away from the surface 46 as it goes from the surface 46 to the space 44 . In addition, the frame member 41 has a first stepped portion 50 formed between the protruding portion 48 and the inner side wall 47 . The first step portion 50 is formed with a vertical surface 50a and a horizontal surface 50b.

In addition, not only the long frame portions 42a, 42b, but also the short frame portions 43a, 43b are similarly formed with the protruding portion 48 and the first step portion 50 .

(Process 2)

Next, as shown in FIG. 5B , a gap forming member 82 as a jig is fitted along the inner peripheral surface of the frame member 41 . Here, as shown in FIG. 4 , the gap forming member 82 is formed of a square frame. Since the outer peripheral shape of the gap forming member 82 is slightly smaller than the inner peripheral shape of the frame member 41 formed by the vertical surface 48a of the protruding portion 48 when viewed from the vertical direction, the gap forming member 82 is completely fitted into the frame member 41 .

(Process 3)

Next, as shown in FIG. 5C , the transmission member 55 is fitted along the inner peripheral surface of the gap forming member 82 . At this time, the transmissive member 55 is turned upside down, and the surface 56 of the transmissive member 55 (the surface on the banknote S side) is placed on the adhesive sheet 81 . In addition, since the inner peripheral shape of the gap forming member 82 is slightly larger than the outer peripheral shape formed by the outer peripheral surface 57 of the transmitting member 55 when viewed from the vertical direction, the transmitting member 55 is completely fitted into the gap forming member 82 . Therefore, in the state shown in FIG. 5C , the gap forming member 82 is interposed between the inner peripheral surface of the frame member 41 and the outer peripheral surface 57 of the transmission member 55 .

(Process 4)

Next, as shown in FIG. 5D , the gap forming member 82 interposed between the inner peripheral surface of the frame member 41 and the outer peripheral surface 57 of the transmission member 55 is removed. Therefore, a gap 60 is formed between the inner peripheral surface of the frame member 41 and the outer peripheral surface 57 of the transmission member 55 . In addition, even in the state where the gap forming member 82 is detached, the surface 46 of the frame member 41 and the surface 56 of the transmission member 55 are bonded by the adhesive sheet 81, so that the frame is aligned while the gap 60 is maintained. The member 41 is positioned with the permeable member 55 .

(Process 5)

Next, an adhesive is filled between the inner peripheral surface of the frame member 41 and the outer peripheral surface 57 of the transmission member 55 . Specifically, as shown in FIG. 5D , in a state where the tip of the nozzle 83 for ejecting the adhesive is located between the vertical surface 50 a of the first stepped portion 50 and the outer peripheral surface 57 of the transmission member 55 , the The tip of the nozzle 83 ejects the adhesive while moving along the entire circumference. As the adhesive, for example, an ultraviolet curing adhesive can be used. The adhesive ejected from the nozzle 83 is intercepted by the vertical surface 50 a of the stepped portion 50 , and is guided mainly to the vertical surface 48 a of the protruding portion 48 and the vertical surface 48 a of the protruding portion 48 compared to the case of flowing out to the inner wall 47 side of the frame member 41 . It penetrates between the outer peripheral surfaces 57 of the member 55 and is ejected downward. In addition, since the horizontal surface 50b of the stepped portion 50 is formed lower than the back surface 58 (the surface on the frame 11 side) of the transmission member 55, even if the adhesive flows out onto the horizontal surface 50b over the vertical surface 50a of the stepped portion 50, In the case of , it can also be suppressed from reaching the back surface 58 of the transmission member 55 from the horizontal plane 50b.

(Process 6)

Next, the adhesive A is cured by irradiating ultraviolet rays to the adhesive filled in the gap 60 between the inner peripheral surface of the frame member 41 and the outer peripheral surface 57 of the transmission member 55 . Therefore, as shown in FIG. 5E , the frame member 41 and the permeable member 55 are bonded with the adhesive A filled in the gap 60 without contacting each other, and the cover member 40 is manufactured. Thereafter, the produced cover member 40 is detached from the adhesive sheet 81 and fixed to the frame 11 with double-sided tape, an adhesive, or the like so as to cover the opening of the frame 11 from above.

In this way, the cover member 40 of the present embodiment joins the frame member 41 and the transmission member 55 by filling the adhesive A into the gap 60 formed by intervening the inner peripheral surface of the frame member 41 and the transmission member 55. The gap forming member 82 between the outer peripheral surfaces 57 is formed. Therefore, since no external force is applied to the frame member 41 when filling the gap 60 with the adhesive A, the accuracy of the parallelism of the long frame portions 42a and 42b of the frame member 41 along the main scanning direction can be improved. Therefore, even in the case where the image sensor unit 10 using the thus manufactured cover member 40 is disposed between the adjacent members 103, 104, since no Therefore, the top end of the banknote S does not hang on the frame member 41 to prevent paper jams.

In addition, in the frame member 41 of the cover member 40 described above, an inclined portion 49 is formed between the surface 46 of the frame member 41 and the protruding portion 48 . Therefore, even if warping occurs on the conveying surface side of the protruding portion 48 during mold release when the frame member 41 is molded by injection molding, the protruding portion 48 can be prevented from protruding toward the conveying surface side due to the warping. In addition, the inclined portion 49 is not limited to a straight line but may be curved as long as the tip of the protruding portion 48 is separated from the surface 46 of the frame member 41 by the inclined portion 49 .

In addition, in the above-mentioned manufacturing method of the cover member 40 , after the gap forming member 82 is fitted along the inner peripheral surface of the frame member 41 placed on the adhesive sheet 81 , the gap forming member 82 is inserted along the inner periphery of the gap forming member 82 The case of embedding the permeable member 55 is, but not limited to, this case.

For example, the frame member 41 may be fitted along the outer periphery of the gap forming member 82 after the gap forming member 82 is fitted along the outer peripheral surface 57 of the permeable member 55 placed on the adhesive sheet 81 .

(second embodiment)

Next, a method of manufacturing the cover member 70 of the second embodiment will be described. In addition, the same code|symbol is attached|subjected to the same structure as the cover member 40 of 1st Embodiment, and the description is abbreviate|omitted. In this embodiment, except for the shape of the frame member 71 being different from that of the first embodiment, other configurations and manufacturing methods are the same.

FIG. 6 is a cross-sectional view of a cover member 40 according to the second embodiment. As shown in FIG. 6 , the frame member 71 has a second stepped portion 51 formed between the first stepped portion 50 and the inner side wall 47 . The second step portion 51 is formed with a vertical surface 51a and a horizontal surface 51b. The horizontal surface 51 b of the second stepped portion 51 is formed lower than the back surface 58 of the transmission member 55 .

In the same manner as in the above step 5, the tip of the nozzle 83 for ejecting the adhesive is positioned between the vertical surface 50a of the first stepped portion 50 and the outer peripheral surface 57 of the transmission member 55, and the nozzle 83 Adhesive is ejected while the tip moves along the entire circumference. The amount of adhesive ejected from the nozzle 83 may not be constant but may increase or decrease. At this time, the temporarily increased adhesive passes over the vertical surface 50a of the first step portion 50 and the vertical surface 51a of the second step portion 51, and flows out to the horizontal surface 51b. By forming the first stepped portion 50 and the second stepped portion 51 in this way, the temporarily increased adhesive can be prevented from flowing out to the back surface 58 of the permeable member 55 but to the inner wall 47 side. In addition, since the horizontal surface 51b of the second stepped portion 51 is formed lower than the back surface 58 of the transmission member 55, the adhesive flowing out on the horizontal surface 51b can be prevented from reaching the rear surface 58 of the transmission member 55 from the horizontal surface 51b.

(third embodiment)

Next, a method of manufacturing the cover member 40 of the third embodiment will be described. In addition, in this embodiment, step 7 is added after step 6 of the manufacturing method of the first embodiment, and the same reference numerals are assigned to the same components as those of the cover member 40 of the first embodiment, and description thereof will be omitted. .

(Process 7)

After the adhesive A is cured in step 6, the light shielding portion 90 is formed on the back side of the adhesive A (the side closer to the frame 11 ). The light-shielding part 90 is for blocking the light transmitted through the adhesive agent A among the light from the light source part 20, and prevents it from being irradiated to the banknote S as light leakage.

FIG. 7 is a perspective view obtained by cutting a part of the cover member 40 . As shown in FIG. 7 , the light shielding portion 90 is formed so as to cover the adhesive A from the frame 11 side along the main scanning direction in which the adhesive A is filled. In FIG. 7 , in order to enhance the light-shielding property, the light-shielding portion 90 also covers a part of the back surface 58 of the transmissive member 55 over the adhesive A.

The light-shielding portion 90 is a light-shielding resin, paint, or ink for shielding light of the emission wavelength emitted from the light source portion 20 . For example, a black adhesive such as SUPER X manufactured by Shiminda Hard Co., Ltd. can be applied to the light-shielding portion 90 . In addition, it is preferable that the light shielding portion 90 is formed using a coater so that it can be uniformly formed along the main scanning direction of the adhesive A.

Cover member 40 shown in FIG. Part 90. Therefore, the light-shielding part 90 can block the light transmitted through the adhesive agent A among the light emitted from the emission surface 27 of the light guide body 25, and can prevent it from being irradiated to the banknote S as leaked light.

In addition, it is not limited to the case where the light shielding portion 90 is formed on the adhesive A on the side close to the light guide 25, and the light shielding portion 90 may also be formed on the adhesive A on the side close to the light collector 30, or may be formed on the adhesive A. The light-shielding portion 90 is formed on the entire circumference of the adhesive A.

In addition, in this embodiment, the case where the light-shielding portion 90 is formed on the side of the adhesive A close to the frame 11 has been described. Black adhesive. In this case, not only the side of the adhesive A near the frame 11 but also the entire adhesive A functions as a light shielding portion.

As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to these embodiment, Various deformation|transformation and changes are possible within the range of the summary.

For example, although the image sensor unit 10 of the said embodiment demonstrated the case where the image of the lower surface of the banknote S was read, it is not limited to this case. For example, an illuminating device including the frame 11, the light source unit 20, and the cover member 40 may emit light from the lower surface of the banknote S, and use an image sensor unit arranged on the upper side of the banknote S to read the light transmitted through the banknote S. A structure like an overlit image.

In addition, in the above-mentioned FIG. 5E , even between the vertical surface 50 a of the first stepped portion 50 and the outer peripheral surface 57 of the transmission member 55 and between the inner side walls 47 of the long frame portions 42 a and 42 b and the transmission member There is also a case where adhesive A is filled between the outer peripheral surfaces 57 of 55 , but the present invention is not limited to this case. For example, the adhesive A may be filled only between the vertical surface 48 a of the protruding portion 48 and the outer peripheral surface 57 of the transmission member 55 .

In addition, in the above-mentioned embodiment, the case where the gap forming member 82 formed by the square frame was used as the jig was described, but it is not limited to this case. For example, the gap forming member may be formed of a triangular frame that is substantially U-shaped (approximately U-shaped in Japanese) when viewed from the vertical direction.

Claims (10)

1. a lid component, this lid component is used for image sensor cell, and this image sensor cell comprises: light source portion, and it is for the light of the illuminated body outgoing transported along the wire of main scanning direction; And housing section, it is along main scanning direction formation and for receiving described light source portion, described lid component covers described housing section from described illuminated side, it is characterized in that,

Described lid component comprises: through component, and it is formed along main scanning direction and supplies the light transmission from described light source portion outgoing; And frame component, it is for keeping described through component,

Described frame component comprises: long margin frame portion, and it is formed along main scanning direction; And teat, it is outstanding from the madial wall in described long margin frame portion towards the described outer peripheral face through component,

Describedly the bonding agent between the inner peripheral surface that is at least filled in described teat with the described outer peripheral face through component is utilized to combine when not contacting with each other through component and described frame component.

2. lid component according to claim 1, is characterized in that,

Described frame component comprises the 1st stage portion, and the 1st stage portion is formed between described teat and described madial wall,

The surface level of described 1st stage portion with described through component by described housing section side face compared be positioned at position by described illuminated side.

3. lid component according to claim 2, is characterized in that,

Described frame component comprises the 2nd stage portion, and the 2nd stage portion is formed between described 1st stage portion and described madial wall,

The surface level of described 2nd stage portion with described through component by described housing section side face compared be positioned at position by described illuminated side.

4. lid component according to any one of claim 1 to 3, is characterized in that,

Rake is formed between the face by described illuminated side and described teat of described frame component.

5. lid component according to claim 1, is characterized in that,

At least by the side of described housing section, there is the light shielding part for blocking the light from described light source portion at described bonding agent.

6. lid component according to claim 5, is characterized in that,

Described light shielding part has light-proofness and is formed at the resin of side by described housing section of described bonding agent, coating or ink.

7. lid component according to claim 1, is characterized in that,

Described bonding agent has light-proofness relative to the light from described light source portion.

8. an image sensor cell, it comprises: light source portion, and it is for the light of the illuminated body outgoing transported along the wire of main scanning direction; Housing section, it is along main scanning direction formation and for receiving described light source portion; And lid component, it covers described housing section from described illuminated side, it is characterized in that,

Described lid component comprises: through component, and it is formed along main scanning direction and supplies the light transmission from described light source portion outgoing; And frame component, it is for keeping described through component,

Described frame component comprises: long margin frame portion, and it is formed along main scanning direction; And teat, it is outstanding from the madial wall in described long margin frame portion towards the described outer peripheral face through component,

Describedly the bonding agent between the inner peripheral surface that is at least filled in described teat with the described outer peripheral face through component is utilized to combine when not contacting with each other through component and described frame component.

9. an image read-out, is characterized in that, this image read-out comprises:

Image sensor cell according to claim 8; And

Delivery section, it is relative to the described illuminated body of described image sensor cell conveying.

10. a sheet paper identification device, is characterized in that,

This sheet paper identification device comprises:

Image sensor cell according to claim 8;

Delivery section, it is for carrying the paper as described illuminated body;

Storage part, it becomes the reference data of the benchmark identifying described paper for storing; And

Comparing section, it identifies described paper for comparing with the described reference data being stored in described storage part the image information read by described image sensor cell.